Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1 | """Unit tests for the io module.""" |
| 2 | |
| 3 | # Tests of io are scattered over the test suite: |
| 4 | # * test_bufio - tests file buffering |
| 5 | # * test_memoryio - tests BytesIO and StringIO |
| 6 | # * test_fileio - tests FileIO |
| 7 | # * test_file - tests the file interface |
| 8 | # * test_io - tests everything else in the io module |
| 9 | # * test_univnewlines - tests universal newline support |
| 10 | # * test_largefile - tests operations on a file greater than 2**32 bytes |
| 11 | # (only enabled with -ulargefile) |
| 12 | |
| 13 | ################################################################################ |
| 14 | # ATTENTION TEST WRITERS!!! |
| 15 | ################################################################################ |
| 16 | # When writing tests for io, it's important to test both the C and Python |
| 17 | # implementations. This is usually done by writing a base test that refers to |
| 18 | # the type it is testing as a attribute. Then it provides custom subclasses to |
| 19 | # test both implementations. This file has lots of examples. |
| 20 | ################################################################################ |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 21 | |
Victor Stinner | f86a5e8 | 2012-06-05 13:43:22 +0200 | [diff] [blame] | 22 | import abc |
| 23 | import array |
| 24 | import errno |
| 25 | import locale |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 26 | import os |
Victor Stinner | f86a5e8 | 2012-06-05 13:43:22 +0200 | [diff] [blame] | 27 | import pickle |
| 28 | import random |
| 29 | import signal |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 30 | import sys |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 31 | import time |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 32 | import unittest |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 33 | import warnings |
Victor Stinner | f86a5e8 | 2012-06-05 13:43:22 +0200 | [diff] [blame] | 34 | import weakref |
Antoine Pitrou | 131a489 | 2012-10-16 22:57:11 +0200 | [diff] [blame] | 35 | from collections import deque, UserList |
Victor Stinner | f86a5e8 | 2012-06-05 13:43:22 +0200 | [diff] [blame] | 36 | from itertools import cycle, count |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 37 | from test import support |
Antoine Pitrou | 25f85d4 | 2015-04-13 19:41:47 +0200 | [diff] [blame] | 38 | from test.script_helper import assert_python_ok, run_python_until_end |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 39 | |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 40 | import codecs |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 41 | import io # C implementation of io |
| 42 | import _pyio as pyio # Python implementation of io |
Victor Stinner | 45df820 | 2010-04-28 22:31:17 +0000 | [diff] [blame] | 43 | try: |
| 44 | import threading |
| 45 | except ImportError: |
| 46 | threading = None |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 47 | try: |
| 48 | import fcntl |
| 49 | except ImportError: |
| 50 | fcntl = None |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 51 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 52 | def _default_chunk_size(): |
| 53 | """Get the default TextIOWrapper chunk size""" |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 54 | with open(__file__, "r", encoding="latin-1") as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 55 | return f._CHUNK_SIZE |
| 56 | |
| 57 | |
Antoine Pitrou | 328ec74 | 2010-09-14 18:37:24 +0000 | [diff] [blame] | 58 | class MockRawIOWithoutRead: |
| 59 | """A RawIO implementation without read(), so as to exercise the default |
| 60 | RawIO.read() which calls readinto().""" |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 61 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 62 | def __init__(self, read_stack=()): |
| 63 | self._read_stack = list(read_stack) |
| 64 | self._write_stack = [] |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 65 | self._reads = 0 |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 66 | self._extraneous_reads = 0 |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 67 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 68 | def write(self, b): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 69 | self._write_stack.append(bytes(b)) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 70 | return len(b) |
| 71 | |
| 72 | def writable(self): |
| 73 | return True |
| 74 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 75 | def fileno(self): |
| 76 | return 42 |
| 77 | |
| 78 | def readable(self): |
| 79 | return True |
| 80 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 81 | def seekable(self): |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 82 | return True |
| 83 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 84 | def seek(self, pos, whence): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 85 | return 0 # wrong but we gotta return something |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 86 | |
| 87 | def tell(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 88 | return 0 # same comment as above |
| 89 | |
| 90 | def readinto(self, buf): |
| 91 | self._reads += 1 |
| 92 | max_len = len(buf) |
| 93 | try: |
| 94 | data = self._read_stack[0] |
| 95 | except IndexError: |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 96 | self._extraneous_reads += 1 |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 97 | return 0 |
| 98 | if data is None: |
| 99 | del self._read_stack[0] |
| 100 | return None |
| 101 | n = len(data) |
| 102 | if len(data) <= max_len: |
| 103 | del self._read_stack[0] |
| 104 | buf[:n] = data |
| 105 | return n |
| 106 | else: |
| 107 | buf[:] = data[:max_len] |
| 108 | self._read_stack[0] = data[max_len:] |
| 109 | return max_len |
| 110 | |
| 111 | def truncate(self, pos=None): |
| 112 | return pos |
| 113 | |
Antoine Pitrou | 328ec74 | 2010-09-14 18:37:24 +0000 | [diff] [blame] | 114 | class CMockRawIOWithoutRead(MockRawIOWithoutRead, io.RawIOBase): |
| 115 | pass |
| 116 | |
| 117 | class PyMockRawIOWithoutRead(MockRawIOWithoutRead, pyio.RawIOBase): |
| 118 | pass |
| 119 | |
| 120 | |
| 121 | class MockRawIO(MockRawIOWithoutRead): |
| 122 | |
| 123 | def read(self, n=None): |
| 124 | self._reads += 1 |
| 125 | try: |
| 126 | return self._read_stack.pop(0) |
| 127 | except: |
| 128 | self._extraneous_reads += 1 |
| 129 | return b"" |
| 130 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 131 | class CMockRawIO(MockRawIO, io.RawIOBase): |
| 132 | pass |
| 133 | |
| 134 | class PyMockRawIO(MockRawIO, pyio.RawIOBase): |
| 135 | pass |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 136 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 137 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 138 | class MisbehavedRawIO(MockRawIO): |
| 139 | def write(self, b): |
| 140 | return super().write(b) * 2 |
| 141 | |
| 142 | def read(self, n=None): |
| 143 | return super().read(n) * 2 |
| 144 | |
| 145 | def seek(self, pos, whence): |
| 146 | return -123 |
| 147 | |
| 148 | def tell(self): |
| 149 | return -456 |
| 150 | |
| 151 | def readinto(self, buf): |
| 152 | super().readinto(buf) |
| 153 | return len(buf) * 5 |
| 154 | |
| 155 | class CMisbehavedRawIO(MisbehavedRawIO, io.RawIOBase): |
| 156 | pass |
| 157 | |
| 158 | class PyMisbehavedRawIO(MisbehavedRawIO, pyio.RawIOBase): |
| 159 | pass |
| 160 | |
| 161 | |
| 162 | class CloseFailureIO(MockRawIO): |
| 163 | closed = 0 |
| 164 | |
| 165 | def close(self): |
| 166 | if not self.closed: |
| 167 | self.closed = 1 |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 168 | raise OSError |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 169 | |
| 170 | class CCloseFailureIO(CloseFailureIO, io.RawIOBase): |
| 171 | pass |
| 172 | |
| 173 | class PyCloseFailureIO(CloseFailureIO, pyio.RawIOBase): |
| 174 | pass |
| 175 | |
| 176 | |
| 177 | class MockFileIO: |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 178 | |
| 179 | def __init__(self, data): |
| 180 | self.read_history = [] |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 181 | super().__init__(data) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 182 | |
| 183 | def read(self, n=None): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 184 | res = super().read(n) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 185 | self.read_history.append(None if res is None else len(res)) |
| 186 | return res |
| 187 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 188 | def readinto(self, b): |
| 189 | res = super().readinto(b) |
| 190 | self.read_history.append(res) |
| 191 | return res |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 192 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 193 | class CMockFileIO(MockFileIO, io.BytesIO): |
| 194 | pass |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 195 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 196 | class PyMockFileIO(MockFileIO, pyio.BytesIO): |
| 197 | pass |
| 198 | |
| 199 | |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 200 | class MockUnseekableIO: |
| 201 | def seekable(self): |
| 202 | return False |
| 203 | |
| 204 | def seek(self, *args): |
| 205 | raise self.UnsupportedOperation("not seekable") |
| 206 | |
| 207 | def tell(self, *args): |
| 208 | raise self.UnsupportedOperation("not seekable") |
| 209 | |
| 210 | class CMockUnseekableIO(MockUnseekableIO, io.BytesIO): |
| 211 | UnsupportedOperation = io.UnsupportedOperation |
| 212 | |
| 213 | class PyMockUnseekableIO(MockUnseekableIO, pyio.BytesIO): |
| 214 | UnsupportedOperation = pyio.UnsupportedOperation |
| 215 | |
| 216 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 217 | class MockNonBlockWriterIO: |
| 218 | |
| 219 | def __init__(self): |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 220 | self._write_stack = [] |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 221 | self._blocker_char = None |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 222 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 223 | def pop_written(self): |
| 224 | s = b"".join(self._write_stack) |
| 225 | self._write_stack[:] = [] |
| 226 | return s |
| 227 | |
| 228 | def block_on(self, char): |
| 229 | """Block when a given char is encountered.""" |
| 230 | self._blocker_char = char |
| 231 | |
| 232 | def readable(self): |
| 233 | return True |
| 234 | |
| 235 | def seekable(self): |
| 236 | return True |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 237 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 238 | def writable(self): |
| 239 | return True |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 240 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 241 | def write(self, b): |
| 242 | b = bytes(b) |
| 243 | n = -1 |
| 244 | if self._blocker_char: |
| 245 | try: |
| 246 | n = b.index(self._blocker_char) |
| 247 | except ValueError: |
| 248 | pass |
| 249 | else: |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 250 | if n > 0: |
| 251 | # write data up to the first blocker |
| 252 | self._write_stack.append(b[:n]) |
| 253 | return n |
| 254 | else: |
| 255 | # cancel blocker and indicate would block |
| 256 | self._blocker_char = None |
| 257 | return None |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 258 | self._write_stack.append(b) |
| 259 | return len(b) |
| 260 | |
| 261 | class CMockNonBlockWriterIO(MockNonBlockWriterIO, io.RawIOBase): |
| 262 | BlockingIOError = io.BlockingIOError |
| 263 | |
| 264 | class PyMockNonBlockWriterIO(MockNonBlockWriterIO, pyio.RawIOBase): |
| 265 | BlockingIOError = pyio.BlockingIOError |
| 266 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 267 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 268 | class IOTest(unittest.TestCase): |
| 269 | |
Neal Norwitz | e7789b1 | 2008-03-24 06:18:09 +0000 | [diff] [blame] | 270 | def setUp(self): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 271 | support.unlink(support.TESTFN) |
Neal Norwitz | e7789b1 | 2008-03-24 06:18:09 +0000 | [diff] [blame] | 272 | |
Guido van Rossum | 4d0f5a4 | 2007-03-07 22:59:39 +0000 | [diff] [blame] | 273 | def tearDown(self): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 274 | support.unlink(support.TESTFN) |
Guido van Rossum | 4d0f5a4 | 2007-03-07 22:59:39 +0000 | [diff] [blame] | 275 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 276 | def write_ops(self, f): |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 277 | self.assertEqual(f.write(b"blah."), 5) |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 278 | f.truncate(0) |
| 279 | self.assertEqual(f.tell(), 5) |
| 280 | f.seek(0) |
| 281 | |
| 282 | self.assertEqual(f.write(b"blah."), 5) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 283 | self.assertEqual(f.seek(0), 0) |
| 284 | self.assertEqual(f.write(b"Hello."), 6) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 285 | self.assertEqual(f.tell(), 6) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 286 | self.assertEqual(f.seek(-1, 1), 5) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 287 | self.assertEqual(f.tell(), 5) |
Guido van Rossum | 254348e | 2007-11-21 19:29:53 +0000 | [diff] [blame] | 288 | self.assertEqual(f.write(bytearray(b" world\n\n\n")), 9) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 289 | self.assertEqual(f.seek(0), 0) |
Guido van Rossum | 2b08b38 | 2007-05-08 20:18:39 +0000 | [diff] [blame] | 290 | self.assertEqual(f.write(b"h"), 1) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 291 | self.assertEqual(f.seek(-1, 2), 13) |
| 292 | self.assertEqual(f.tell(), 13) |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 293 | |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 294 | self.assertEqual(f.truncate(12), 12) |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 295 | self.assertEqual(f.tell(), 13) |
Christian Heimes | 8e42a0a | 2007-11-08 18:04:45 +0000 | [diff] [blame] | 296 | self.assertRaises(TypeError, f.seek, 0.0) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 297 | |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 298 | def read_ops(self, f, buffered=False): |
| 299 | data = f.read(5) |
| 300 | self.assertEqual(data, b"hello") |
Guido van Rossum | 254348e | 2007-11-21 19:29:53 +0000 | [diff] [blame] | 301 | data = bytearray(data) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 302 | self.assertEqual(f.readinto(data), 5) |
| 303 | self.assertEqual(data, b" worl") |
| 304 | self.assertEqual(f.readinto(data), 2) |
| 305 | self.assertEqual(len(data), 5) |
| 306 | self.assertEqual(data[:2], b"d\n") |
| 307 | self.assertEqual(f.seek(0), 0) |
| 308 | self.assertEqual(f.read(20), b"hello world\n") |
| 309 | self.assertEqual(f.read(1), b"") |
Guido van Rossum | 254348e | 2007-11-21 19:29:53 +0000 | [diff] [blame] | 310 | self.assertEqual(f.readinto(bytearray(b"x")), 0) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 311 | self.assertEqual(f.seek(-6, 2), 6) |
| 312 | self.assertEqual(f.read(5), b"world") |
| 313 | self.assertEqual(f.read(0), b"") |
Guido van Rossum | 254348e | 2007-11-21 19:29:53 +0000 | [diff] [blame] | 314 | self.assertEqual(f.readinto(bytearray()), 0) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 315 | self.assertEqual(f.seek(-6, 1), 5) |
| 316 | self.assertEqual(f.read(5), b" worl") |
| 317 | self.assertEqual(f.tell(), 10) |
Christian Heimes | 8e42a0a | 2007-11-08 18:04:45 +0000 | [diff] [blame] | 318 | self.assertRaises(TypeError, f.seek, 0.0) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 319 | if buffered: |
| 320 | f.seek(0) |
| 321 | self.assertEqual(f.read(), b"hello world\n") |
| 322 | f.seek(6) |
| 323 | self.assertEqual(f.read(), b"world\n") |
| 324 | self.assertEqual(f.read(), b"") |
| 325 | |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 326 | LARGE = 2**31 |
| 327 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 328 | def large_file_ops(self, f): |
| 329 | assert f.readable() |
| 330 | assert f.writable() |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 331 | self.assertEqual(f.seek(self.LARGE), self.LARGE) |
| 332 | self.assertEqual(f.tell(), self.LARGE) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 333 | self.assertEqual(f.write(b"xxx"), 3) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 334 | self.assertEqual(f.tell(), self.LARGE + 3) |
| 335 | self.assertEqual(f.seek(-1, 1), self.LARGE + 2) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 336 | self.assertEqual(f.truncate(), self.LARGE + 2) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 337 | self.assertEqual(f.tell(), self.LARGE + 2) |
| 338 | self.assertEqual(f.seek(0, 2), self.LARGE + 2) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 339 | self.assertEqual(f.truncate(self.LARGE + 1), self.LARGE + 1) |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 340 | self.assertEqual(f.tell(), self.LARGE + 2) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 341 | self.assertEqual(f.seek(0, 2), self.LARGE + 1) |
| 342 | self.assertEqual(f.seek(-1, 2), self.LARGE) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 343 | self.assertEqual(f.read(2), b"x") |
| 344 | |
Benjamin Peterson | 81971ea | 2009-05-14 22:01:31 +0000 | [diff] [blame] | 345 | def test_invalid_operations(self): |
| 346 | # Try writing on a file opened in read mode and vice-versa. |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 347 | exc = self.UnsupportedOperation |
Benjamin Peterson | 81971ea | 2009-05-14 22:01:31 +0000 | [diff] [blame] | 348 | for mode in ("w", "wb"): |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 349 | with self.open(support.TESTFN, mode) as fp: |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 350 | self.assertRaises(exc, fp.read) |
| 351 | self.assertRaises(exc, fp.readline) |
| 352 | with self.open(support.TESTFN, "wb", buffering=0) as fp: |
| 353 | self.assertRaises(exc, fp.read) |
| 354 | self.assertRaises(exc, fp.readline) |
| 355 | with self.open(support.TESTFN, "rb", buffering=0) as fp: |
| 356 | self.assertRaises(exc, fp.write, b"blah") |
| 357 | self.assertRaises(exc, fp.writelines, [b"blah\n"]) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 358 | with self.open(support.TESTFN, "rb") as fp: |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 359 | self.assertRaises(exc, fp.write, b"blah") |
| 360 | self.assertRaises(exc, fp.writelines, [b"blah\n"]) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 361 | with self.open(support.TESTFN, "r") as fp: |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 362 | self.assertRaises(exc, fp.write, "blah") |
| 363 | self.assertRaises(exc, fp.writelines, ["blah\n"]) |
| 364 | # Non-zero seeking from current or end pos |
| 365 | self.assertRaises(exc, fp.seek, 1, self.SEEK_CUR) |
| 366 | self.assertRaises(exc, fp.seek, -1, self.SEEK_END) |
Benjamin Peterson | 81971ea | 2009-05-14 22:01:31 +0000 | [diff] [blame] | 367 | |
Antoine Pitrou | 1334884 | 2012-01-29 18:36:34 +0100 | [diff] [blame] | 368 | def test_open_handles_NUL_chars(self): |
| 369 | fn_with_NUL = 'foo\0bar' |
| 370 | self.assertRaises(TypeError, self.open, fn_with_NUL, 'w') |
| 371 | self.assertRaises(TypeError, self.open, bytes(fn_with_NUL, 'ascii'), 'w') |
| 372 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 373 | def test_raw_file_io(self): |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 374 | with self.open(support.TESTFN, "wb", buffering=0) as f: |
| 375 | self.assertEqual(f.readable(), False) |
| 376 | self.assertEqual(f.writable(), True) |
| 377 | self.assertEqual(f.seekable(), True) |
| 378 | self.write_ops(f) |
| 379 | with self.open(support.TESTFN, "rb", buffering=0) as f: |
| 380 | self.assertEqual(f.readable(), True) |
| 381 | self.assertEqual(f.writable(), False) |
| 382 | self.assertEqual(f.seekable(), True) |
| 383 | self.read_ops(f) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 384 | |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 385 | def test_buffered_file_io(self): |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 386 | with self.open(support.TESTFN, "wb") as f: |
| 387 | self.assertEqual(f.readable(), False) |
| 388 | self.assertEqual(f.writable(), True) |
| 389 | self.assertEqual(f.seekable(), True) |
| 390 | self.write_ops(f) |
| 391 | with self.open(support.TESTFN, "rb") as f: |
| 392 | self.assertEqual(f.readable(), True) |
| 393 | self.assertEqual(f.writable(), False) |
| 394 | self.assertEqual(f.seekable(), True) |
| 395 | self.read_ops(f, True) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 396 | |
Guido van Rossum | 48fc58a | 2007-06-07 23:45:37 +0000 | [diff] [blame] | 397 | def test_readline(self): |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 398 | with self.open(support.TESTFN, "wb") as f: |
| 399 | f.write(b"abc\ndef\nxyzzy\nfoo\x00bar\nanother line") |
| 400 | with self.open(support.TESTFN, "rb") as f: |
| 401 | self.assertEqual(f.readline(), b"abc\n") |
| 402 | self.assertEqual(f.readline(10), b"def\n") |
| 403 | self.assertEqual(f.readline(2), b"xy") |
| 404 | self.assertEqual(f.readline(4), b"zzy\n") |
| 405 | self.assertEqual(f.readline(), b"foo\x00bar\n") |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 406 | self.assertEqual(f.readline(None), b"another line") |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 407 | self.assertRaises(TypeError, f.readline, 5.3) |
| 408 | with self.open(support.TESTFN, "r") as f: |
| 409 | self.assertRaises(TypeError, f.readline, 5.3) |
Guido van Rossum | 48fc58a | 2007-06-07 23:45:37 +0000 | [diff] [blame] | 410 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 411 | def test_raw_bytes_io(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 412 | f = self.BytesIO() |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 413 | self.write_ops(f) |
| 414 | data = f.getvalue() |
| 415 | self.assertEqual(data, b"hello world\n") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 416 | f = self.BytesIO(data) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 417 | self.read_ops(f, True) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 418 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 419 | def test_large_file_ops(self): |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 420 | # On Windows and Mac OSX this test comsumes large resources; It takes |
| 421 | # a long time to build the >2GB file and takes >2GB of disk space |
| 422 | # therefore the resource must be enabled to run this test. |
| 423 | if sys.platform[:3] == 'win' or sys.platform == 'darwin': |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 424 | support.requires( |
| 425 | 'largefile', |
| 426 | 'test requires %s bytes and a long time to run' % self.LARGE) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 427 | with self.open(support.TESTFN, "w+b", 0) as f: |
| 428 | self.large_file_ops(f) |
| 429 | with self.open(support.TESTFN, "w+b") as f: |
| 430 | self.large_file_ops(f) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 431 | |
| 432 | def test_with_open(self): |
| 433 | for bufsize in (0, 1, 100): |
| 434 | f = None |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 435 | with self.open(support.TESTFN, "wb", bufsize) as f: |
Guido van Rossum | 1f2ca56 | 2007-08-27 20:44:15 +0000 | [diff] [blame] | 436 | f.write(b"xxx") |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 437 | self.assertEqual(f.closed, True) |
| 438 | f = None |
| 439 | try: |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 440 | with self.open(support.TESTFN, "wb", bufsize) as f: |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 441 | 1/0 |
| 442 | except ZeroDivisionError: |
| 443 | self.assertEqual(f.closed, True) |
| 444 | else: |
| 445 | self.fail("1/0 didn't raise an exception") |
| 446 | |
Antoine Pitrou | 08838b6 | 2009-01-21 00:55:13 +0000 | [diff] [blame] | 447 | # issue 5008 |
| 448 | def test_append_mode_tell(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 449 | with self.open(support.TESTFN, "wb") as f: |
Antoine Pitrou | 08838b6 | 2009-01-21 00:55:13 +0000 | [diff] [blame] | 450 | f.write(b"xxx") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 451 | with self.open(support.TESTFN, "ab", buffering=0) as f: |
Antoine Pitrou | 08838b6 | 2009-01-21 00:55:13 +0000 | [diff] [blame] | 452 | self.assertEqual(f.tell(), 3) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 453 | with self.open(support.TESTFN, "ab") as f: |
Antoine Pitrou | 08838b6 | 2009-01-21 00:55:13 +0000 | [diff] [blame] | 454 | self.assertEqual(f.tell(), 3) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 455 | with self.open(support.TESTFN, "a") as f: |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 456 | self.assertTrue(f.tell() > 0) |
Antoine Pitrou | 08838b6 | 2009-01-21 00:55:13 +0000 | [diff] [blame] | 457 | |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 458 | def test_destructor(self): |
| 459 | record = [] |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 460 | class MyFileIO(self.FileIO): |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 461 | def __del__(self): |
| 462 | record.append(1) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 463 | try: |
| 464 | f = super().__del__ |
| 465 | except AttributeError: |
| 466 | pass |
| 467 | else: |
| 468 | f() |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 469 | def close(self): |
| 470 | record.append(2) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 471 | super().close() |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 472 | def flush(self): |
| 473 | record.append(3) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 474 | super().flush() |
Brett Cannon | 5a9e91b | 2010-10-29 23:53:03 +0000 | [diff] [blame] | 475 | with support.check_warnings(('', ResourceWarning)): |
| 476 | f = MyFileIO(support.TESTFN, "wb") |
| 477 | f.write(b"xxx") |
| 478 | del f |
| 479 | support.gc_collect() |
| 480 | self.assertEqual(record, [1, 2, 3]) |
| 481 | with self.open(support.TESTFN, "rb") as f: |
| 482 | self.assertEqual(f.read(), b"xxx") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 483 | |
| 484 | def _check_base_destructor(self, base): |
| 485 | record = [] |
| 486 | class MyIO(base): |
| 487 | def __init__(self): |
| 488 | # This exercises the availability of attributes on object |
| 489 | # destruction. |
| 490 | # (in the C version, close() is called by the tp_dealloc |
| 491 | # function, not by __del__) |
| 492 | self.on_del = 1 |
| 493 | self.on_close = 2 |
| 494 | self.on_flush = 3 |
| 495 | def __del__(self): |
| 496 | record.append(self.on_del) |
| 497 | try: |
| 498 | f = super().__del__ |
| 499 | except AttributeError: |
| 500 | pass |
| 501 | else: |
| 502 | f() |
| 503 | def close(self): |
| 504 | record.append(self.on_close) |
| 505 | super().close() |
| 506 | def flush(self): |
| 507 | record.append(self.on_flush) |
| 508 | super().flush() |
| 509 | f = MyIO() |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 510 | del f |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 511 | support.gc_collect() |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 512 | self.assertEqual(record, [1, 2, 3]) |
| 513 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 514 | def test_IOBase_destructor(self): |
| 515 | self._check_base_destructor(self.IOBase) |
| 516 | |
| 517 | def test_RawIOBase_destructor(self): |
| 518 | self._check_base_destructor(self.RawIOBase) |
| 519 | |
| 520 | def test_BufferedIOBase_destructor(self): |
| 521 | self._check_base_destructor(self.BufferedIOBase) |
| 522 | |
| 523 | def test_TextIOBase_destructor(self): |
| 524 | self._check_base_destructor(self.TextIOBase) |
| 525 | |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame] | 526 | def test_close_flushes(self): |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 527 | with self.open(support.TESTFN, "wb") as f: |
| 528 | f.write(b"xxx") |
| 529 | with self.open(support.TESTFN, "rb") as f: |
| 530 | self.assertEqual(f.read(), b"xxx") |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 531 | |
Guido van Rossum | d410395 | 2007-04-12 05:44:49 +0000 | [diff] [blame] | 532 | def test_array_writes(self): |
| 533 | a = array.array('i', range(10)) |
Antoine Pitrou | 1ce3eb5 | 2010-09-01 20:29:34 +0000 | [diff] [blame] | 534 | n = len(a.tobytes()) |
Benjamin Peterson | 45cec32 | 2009-04-24 23:14:50 +0000 | [diff] [blame] | 535 | with self.open(support.TESTFN, "wb", 0) as f: |
| 536 | self.assertEqual(f.write(a), n) |
| 537 | with self.open(support.TESTFN, "wb") as f: |
| 538 | self.assertEqual(f.write(a), n) |
Guido van Rossum | d410395 | 2007-04-12 05:44:49 +0000 | [diff] [blame] | 539 | |
Guido van Rossum | 2dced8b | 2007-10-30 17:27:30 +0000 | [diff] [blame] | 540 | def test_closefd(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 541 | self.assertRaises(ValueError, self.open, support.TESTFN, 'w', |
Guido van Rossum | 2dced8b | 2007-10-30 17:27:30 +0000 | [diff] [blame] | 542 | closefd=False) |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 543 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 544 | def test_read_closed(self): |
| 545 | with self.open(support.TESTFN, "w") as f: |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 546 | f.write("egg\n") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 547 | with self.open(support.TESTFN, "r") as f: |
| 548 | file = self.open(f.fileno(), "r", closefd=False) |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 549 | self.assertEqual(file.read(), "egg\n") |
| 550 | file.seek(0) |
| 551 | file.close() |
| 552 | self.assertRaises(ValueError, file.read) |
| 553 | |
| 554 | def test_no_closefd_with_filename(self): |
| 555 | # can't use closefd in combination with a file name |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 556 | self.assertRaises(ValueError, self.open, support.TESTFN, "r", closefd=False) |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 557 | |
| 558 | def test_closefd_attr(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 559 | with self.open(support.TESTFN, "wb") as f: |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 560 | f.write(b"egg\n") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 561 | with self.open(support.TESTFN, "r") as f: |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 562 | self.assertEqual(f.buffer.raw.closefd, True) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 563 | file = self.open(f.fileno(), "r", closefd=False) |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 564 | self.assertEqual(file.buffer.raw.closefd, False) |
| 565 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 566 | def test_garbage_collection(self): |
| 567 | # FileIO objects are collected, and collecting them flushes |
| 568 | # all data to disk. |
Benjamin Peterson | ebe5d8a | 2010-10-31 01:30:11 +0000 | [diff] [blame] | 569 | with support.check_warnings(('', ResourceWarning)): |
| 570 | f = self.FileIO(support.TESTFN, "wb") |
| 571 | f.write(b"abcxxx") |
| 572 | f.f = f |
| 573 | wr = weakref.ref(f) |
| 574 | del f |
| 575 | support.gc_collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 576 | self.assertTrue(wr() is None, wr) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 577 | with self.open(support.TESTFN, "rb") as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 578 | self.assertEqual(f.read(), b"abcxxx") |
Christian Heimes | ecc42a2 | 2008-11-05 19:30:32 +0000 | [diff] [blame] | 579 | |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 580 | def test_unbounded_file(self): |
| 581 | # Issue #1174606: reading from an unbounded stream such as /dev/zero. |
| 582 | zero = "/dev/zero" |
| 583 | if not os.path.exists(zero): |
Antoine Pitrou | c50cb8e | 2009-04-19 00:10:36 +0000 | [diff] [blame] | 584 | self.skipTest("{0} does not exist".format(zero)) |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 585 | if sys.maxsize > 0x7FFFFFFF: |
Antoine Pitrou | c50cb8e | 2009-04-19 00:10:36 +0000 | [diff] [blame] | 586 | self.skipTest("test can only run in a 32-bit address space") |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 587 | if support.real_max_memuse < support._2G: |
Antoine Pitrou | c50cb8e | 2009-04-19 00:10:36 +0000 | [diff] [blame] | 588 | self.skipTest("test requires at least 2GB of memory") |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 589 | with self.open(zero, "rb", buffering=0) as f: |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 590 | self.assertRaises(OverflowError, f.read) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 591 | with self.open(zero, "rb") as f: |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 592 | self.assertRaises(OverflowError, f.read) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 593 | with self.open(zero, "r") as f: |
Antoine Pitrou | 7d037a7 | 2009-03-29 18:55:12 +0000 | [diff] [blame] | 594 | self.assertRaises(OverflowError, f.read) |
| 595 | |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 596 | def check_flush_error_on_close(self, *args, **kwargs): |
| 597 | # Test that the file is closed despite failed flush |
| 598 | # and that flush() is called before file closed. |
| 599 | f = self.open(*args, **kwargs) |
| 600 | closed = [] |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 601 | def bad_flush(): |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 602 | closed[:] = [f.closed] |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 603 | raise OSError() |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 604 | f.flush = bad_flush |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 605 | self.assertRaises(OSError, f.close) # exception not swallowed |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 606 | self.assertTrue(f.closed) |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 607 | self.assertTrue(closed) # flush() called |
| 608 | self.assertFalse(closed[0]) # flush() called before file closed |
Serhiy Storchaka | c26a1a4 | 2015-02-23 00:28:38 +0200 | [diff] [blame] | 609 | f.flush = lambda: None # break reference loop |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 610 | |
| 611 | def test_flush_error_on_close(self): |
| 612 | # raw file |
| 613 | # Issue #5700: io.FileIO calls flush() after file closed |
| 614 | self.check_flush_error_on_close(support.TESTFN, 'wb', buffering=0) |
| 615 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 616 | self.check_flush_error_on_close(fd, 'wb', buffering=0) |
| 617 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 618 | self.check_flush_error_on_close(fd, 'wb', buffering=0, closefd=False) |
| 619 | os.close(fd) |
| 620 | # buffered io |
| 621 | self.check_flush_error_on_close(support.TESTFN, 'wb') |
| 622 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 623 | self.check_flush_error_on_close(fd, 'wb') |
| 624 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 625 | self.check_flush_error_on_close(fd, 'wb', closefd=False) |
| 626 | os.close(fd) |
| 627 | # text io |
| 628 | self.check_flush_error_on_close(support.TESTFN, 'w') |
| 629 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 630 | self.check_flush_error_on_close(fd, 'w') |
| 631 | fd = os.open(support.TESTFN, os.O_WRONLY|os.O_CREAT) |
| 632 | self.check_flush_error_on_close(fd, 'w', closefd=False) |
| 633 | os.close(fd) |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 634 | |
| 635 | def test_multi_close(self): |
| 636 | f = self.open(support.TESTFN, "wb", buffering=0) |
| 637 | f.close() |
| 638 | f.close() |
| 639 | f.close() |
| 640 | self.assertRaises(ValueError, f.flush) |
| 641 | |
Antoine Pitrou | 328ec74 | 2010-09-14 18:37:24 +0000 | [diff] [blame] | 642 | def test_RawIOBase_read(self): |
| 643 | # Exercise the default RawIOBase.read() implementation (which calls |
| 644 | # readinto() internally). |
| 645 | rawio = self.MockRawIOWithoutRead((b"abc", b"d", None, b"efg", None)) |
| 646 | self.assertEqual(rawio.read(2), b"ab") |
| 647 | self.assertEqual(rawio.read(2), b"c") |
| 648 | self.assertEqual(rawio.read(2), b"d") |
| 649 | self.assertEqual(rawio.read(2), None) |
| 650 | self.assertEqual(rawio.read(2), b"ef") |
| 651 | self.assertEqual(rawio.read(2), b"g") |
| 652 | self.assertEqual(rawio.read(2), None) |
| 653 | self.assertEqual(rawio.read(2), b"") |
| 654 | |
Benjamin Peterson | f6f3a35 | 2011-09-03 09:26:20 -0400 | [diff] [blame] | 655 | def test_types_have_dict(self): |
| 656 | test = ( |
| 657 | self.IOBase(), |
| 658 | self.RawIOBase(), |
| 659 | self.TextIOBase(), |
| 660 | self.StringIO(), |
| 661 | self.BytesIO() |
| 662 | ) |
| 663 | for obj in test: |
| 664 | self.assertTrue(hasattr(obj, "__dict__")) |
| 665 | |
Ross Lagerwall | 59142db | 2011-10-31 20:34:46 +0200 | [diff] [blame] | 666 | def test_opener(self): |
| 667 | with self.open(support.TESTFN, "w") as f: |
| 668 | f.write("egg\n") |
| 669 | fd = os.open(support.TESTFN, os.O_RDONLY) |
| 670 | def opener(path, flags): |
| 671 | return fd |
| 672 | with self.open("non-existent", "r", opener=opener) as f: |
| 673 | self.assertEqual(f.read(), "egg\n") |
| 674 | |
Hynek Schlawack | 2cc7156 | 2012-05-25 10:05:53 +0200 | [diff] [blame] | 675 | def test_fileio_closefd(self): |
| 676 | # Issue #4841 |
| 677 | with self.open(__file__, 'rb') as f1, \ |
| 678 | self.open(__file__, 'rb') as f2: |
| 679 | fileio = self.FileIO(f1.fileno(), closefd=False) |
| 680 | # .__init__() must not close f1 |
| 681 | fileio.__init__(f2.fileno(), closefd=False) |
| 682 | f1.readline() |
| 683 | # .close() must not close f2 |
| 684 | fileio.close() |
| 685 | f2.readline() |
| 686 | |
Serhiy Storchaka | f10063e | 2014-06-09 13:32:34 +0300 | [diff] [blame] | 687 | def test_nonbuffered_textio(self): |
| 688 | with warnings.catch_warnings(record=True) as recorded: |
| 689 | with self.assertRaises(ValueError): |
| 690 | self.open(support.TESTFN, 'w', buffering=0) |
| 691 | support.gc_collect() |
| 692 | self.assertEqual(recorded, []) |
| 693 | |
| 694 | def test_invalid_newline(self): |
| 695 | with warnings.catch_warnings(record=True) as recorded: |
| 696 | with self.assertRaises(ValueError): |
| 697 | self.open(support.TESTFN, 'w', newline='invalid') |
| 698 | support.gc_collect() |
| 699 | self.assertEqual(recorded, []) |
| 700 | |
Hynek Schlawack | 2cc7156 | 2012-05-25 10:05:53 +0200 | [diff] [blame] | 701 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 702 | class CIOTest(IOTest): |
Antoine Pitrou | 84f1b17 | 2011-07-12 21:57:15 +0200 | [diff] [blame] | 703 | |
| 704 | def test_IOBase_finalize(self): |
| 705 | # Issue #12149: segmentation fault on _PyIOBase_finalize when both a |
| 706 | # class which inherits IOBase and an object of this class are caught |
| 707 | # in a reference cycle and close() is already in the method cache. |
| 708 | class MyIO(self.IOBase): |
| 709 | def close(self): |
| 710 | pass |
| 711 | |
| 712 | # create an instance to populate the method cache |
| 713 | MyIO() |
| 714 | obj = MyIO() |
| 715 | obj.obj = obj |
| 716 | wr = weakref.ref(obj) |
| 717 | del MyIO |
| 718 | del obj |
| 719 | support.gc_collect() |
| 720 | self.assertTrue(wr() is None, wr) |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 721 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 722 | class PyIOTest(IOTest): |
| 723 | pass |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 724 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 725 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 726 | class CommonBufferedTests: |
| 727 | # Tests common to BufferedReader, BufferedWriter and BufferedRandom |
| 728 | |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 729 | def test_detach(self): |
| 730 | raw = self.MockRawIO() |
| 731 | buf = self.tp(raw) |
| 732 | self.assertIs(buf.detach(), raw) |
| 733 | self.assertRaises(ValueError, buf.detach) |
| 734 | |
Benjamin Peterson | 10e76b6 | 2014-12-21 20:51:50 -0600 | [diff] [blame] | 735 | repr(buf) # Should still work |
| 736 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 737 | def test_fileno(self): |
| 738 | rawio = self.MockRawIO() |
| 739 | bufio = self.tp(rawio) |
| 740 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 741 | self.assertEqual(42, bufio.fileno()) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 742 | |
Zachary Ware | 9fe6d86 | 2013-12-08 00:20:35 -0600 | [diff] [blame] | 743 | @unittest.skip('test having existential crisis') |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 744 | def test_no_fileno(self): |
| 745 | # XXX will we always have fileno() function? If so, kill |
| 746 | # this test. Else, write it. |
| 747 | pass |
| 748 | |
| 749 | def test_invalid_args(self): |
| 750 | rawio = self.MockRawIO() |
| 751 | bufio = self.tp(rawio) |
| 752 | # Invalid whence |
| 753 | self.assertRaises(ValueError, bufio.seek, 0, -1) |
Jesus Cea | 9436361 | 2012-06-22 18:32:07 +0200 | [diff] [blame] | 754 | self.assertRaises(ValueError, bufio.seek, 0, 9) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 755 | |
| 756 | def test_override_destructor(self): |
| 757 | tp = self.tp |
| 758 | record = [] |
| 759 | class MyBufferedIO(tp): |
| 760 | def __del__(self): |
| 761 | record.append(1) |
| 762 | try: |
| 763 | f = super().__del__ |
| 764 | except AttributeError: |
| 765 | pass |
| 766 | else: |
| 767 | f() |
| 768 | def close(self): |
| 769 | record.append(2) |
| 770 | super().close() |
| 771 | def flush(self): |
| 772 | record.append(3) |
| 773 | super().flush() |
| 774 | rawio = self.MockRawIO() |
| 775 | bufio = MyBufferedIO(rawio) |
| 776 | writable = bufio.writable() |
| 777 | del bufio |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 778 | support.gc_collect() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 779 | if writable: |
| 780 | self.assertEqual(record, [1, 2, 3]) |
| 781 | else: |
| 782 | self.assertEqual(record, [1, 2]) |
| 783 | |
| 784 | def test_context_manager(self): |
| 785 | # Test usability as a context manager |
| 786 | rawio = self.MockRawIO() |
| 787 | bufio = self.tp(rawio) |
| 788 | def _with(): |
| 789 | with bufio: |
| 790 | pass |
| 791 | _with() |
| 792 | # bufio should now be closed, and using it a second time should raise |
| 793 | # a ValueError. |
| 794 | self.assertRaises(ValueError, _with) |
| 795 | |
| 796 | def test_error_through_destructor(self): |
| 797 | # Test that the exception state is not modified by a destructor, |
| 798 | # even if close() fails. |
| 799 | rawio = self.CloseFailureIO() |
| 800 | def f(): |
| 801 | self.tp(rawio).xyzzy |
| 802 | with support.captured_output("stderr") as s: |
| 803 | self.assertRaises(AttributeError, f) |
| 804 | s = s.getvalue().strip() |
| 805 | if s: |
| 806 | # The destructor *may* have printed an unraisable error, check it |
| 807 | self.assertEqual(len(s.splitlines()), 1) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 808 | self.assertTrue(s.startswith("Exception OSError: "), s) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 809 | self.assertTrue(s.endswith(" ignored"), s) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 810 | |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 811 | def test_repr(self): |
| 812 | raw = self.MockRawIO() |
| 813 | b = self.tp(raw) |
| 814 | clsname = "%s.%s" % (self.tp.__module__, self.tp.__name__) |
| 815 | self.assertEqual(repr(b), "<%s>" % clsname) |
| 816 | raw.name = "dummy" |
| 817 | self.assertEqual(repr(b), "<%s name='dummy'>" % clsname) |
| 818 | raw.name = b"dummy" |
| 819 | self.assertEqual(repr(b), "<%s name=b'dummy'>" % clsname) |
| 820 | |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 821 | def test_flush_error_on_close(self): |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 822 | # Test that buffered file is closed despite failed flush |
| 823 | # and that flush() is called before file closed. |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 824 | raw = self.MockRawIO() |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 825 | closed = [] |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 826 | def bad_flush(): |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 827 | closed[:] = [b.closed, raw.closed] |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 828 | raise OSError() |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 829 | raw.flush = bad_flush |
| 830 | b = self.tp(raw) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 831 | self.assertRaises(OSError, b.close) # exception not swallowed |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 832 | self.assertTrue(b.closed) |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 833 | self.assertTrue(raw.closed) |
| 834 | self.assertTrue(closed) # flush() called |
| 835 | self.assertFalse(closed[0]) # flush() called before file closed |
| 836 | self.assertFalse(closed[1]) |
Serhiy Storchaka | c26a1a4 | 2015-02-23 00:28:38 +0200 | [diff] [blame] | 837 | raw.flush = lambda: None # break reference loop |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 838 | |
| 839 | def test_close_error_on_close(self): |
| 840 | raw = self.MockRawIO() |
| 841 | def bad_flush(): |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 842 | raise OSError('flush') |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 843 | def bad_close(): |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 844 | raise OSError('close') |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 845 | raw.close = bad_close |
| 846 | b = self.tp(raw) |
| 847 | b.flush = bad_flush |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 848 | with self.assertRaises(OSError) as err: # exception not swallowed |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 849 | b.close() |
| 850 | self.assertEqual(err.exception.args, ('close',)) |
Serhiy Storchaka | 8a8f7f9 | 2014-06-09 09:13:04 +0300 | [diff] [blame] | 851 | self.assertIsInstance(err.exception.__context__, OSError) |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 852 | self.assertEqual(err.exception.__context__.args, ('flush',)) |
| 853 | self.assertFalse(b.closed) |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 854 | |
Serhiy Storchaka | 8a8f7f9 | 2014-06-09 09:13:04 +0300 | [diff] [blame] | 855 | def test_nonnormalized_close_error_on_close(self): |
| 856 | # Issue #21677 |
| 857 | raw = self.MockRawIO() |
| 858 | def bad_flush(): |
| 859 | raise non_existing_flush |
| 860 | def bad_close(): |
| 861 | raise non_existing_close |
| 862 | raw.close = bad_close |
| 863 | b = self.tp(raw) |
| 864 | b.flush = bad_flush |
| 865 | with self.assertRaises(NameError) as err: # exception not swallowed |
| 866 | b.close() |
| 867 | self.assertIn('non_existing_close', str(err.exception)) |
| 868 | self.assertIsInstance(err.exception.__context__, NameError) |
| 869 | self.assertIn('non_existing_flush', str(err.exception.__context__)) |
| 870 | self.assertFalse(b.closed) |
| 871 | |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 872 | def test_multi_close(self): |
| 873 | raw = self.MockRawIO() |
| 874 | b = self.tp(raw) |
| 875 | b.close() |
| 876 | b.close() |
| 877 | b.close() |
| 878 | self.assertRaises(ValueError, b.flush) |
| 879 | |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 880 | def test_unseekable(self): |
| 881 | bufio = self.tp(self.MockUnseekableIO(b"A" * 10)) |
| 882 | self.assertRaises(self.UnsupportedOperation, bufio.tell) |
| 883 | self.assertRaises(self.UnsupportedOperation, bufio.seek, 0) |
| 884 | |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 885 | def test_readonly_attributes(self): |
| 886 | raw = self.MockRawIO() |
| 887 | buf = self.tp(raw) |
| 888 | x = self.MockRawIO() |
| 889 | with self.assertRaises(AttributeError): |
| 890 | buf.raw = x |
| 891 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 892 | |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 893 | class SizeofTest: |
| 894 | |
| 895 | @support.cpython_only |
| 896 | def test_sizeof(self): |
| 897 | bufsize1 = 4096 |
| 898 | bufsize2 = 8192 |
| 899 | rawio = self.MockRawIO() |
| 900 | bufio = self.tp(rawio, buffer_size=bufsize1) |
| 901 | size = sys.getsizeof(bufio) - bufsize1 |
| 902 | rawio = self.MockRawIO() |
| 903 | bufio = self.tp(rawio, buffer_size=bufsize2) |
| 904 | self.assertEqual(sys.getsizeof(bufio), size + bufsize2) |
| 905 | |
Jesus Cea | dc46945 | 2012-10-04 12:37:56 +0200 | [diff] [blame] | 906 | @support.cpython_only |
| 907 | def test_buffer_freeing(self) : |
| 908 | bufsize = 4096 |
| 909 | rawio = self.MockRawIO() |
| 910 | bufio = self.tp(rawio, buffer_size=bufsize) |
| 911 | size = sys.getsizeof(bufio) - bufsize |
| 912 | bufio.close() |
| 913 | self.assertEqual(sys.getsizeof(bufio), size) |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 914 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 915 | class BufferedReaderTest(unittest.TestCase, CommonBufferedTests): |
| 916 | read_mode = "rb" |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 917 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 918 | def test_constructor(self): |
| 919 | rawio = self.MockRawIO([b"abc"]) |
| 920 | bufio = self.tp(rawio) |
| 921 | bufio.__init__(rawio) |
| 922 | bufio.__init__(rawio, buffer_size=1024) |
| 923 | bufio.__init__(rawio, buffer_size=16) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 924 | self.assertEqual(b"abc", bufio.read()) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 925 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=0) |
| 926 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-16) |
| 927 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-1) |
| 928 | rawio = self.MockRawIO([b"abc"]) |
| 929 | bufio.__init__(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 930 | self.assertEqual(b"abc", bufio.read()) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 931 | |
Serhiy Storchaka | 61e2493 | 2014-02-12 10:52:35 +0200 | [diff] [blame] | 932 | def test_uninitialized(self): |
| 933 | bufio = self.tp.__new__(self.tp) |
| 934 | del bufio |
| 935 | bufio = self.tp.__new__(self.tp) |
| 936 | self.assertRaisesRegex((ValueError, AttributeError), |
| 937 | 'uninitialized|has no attribute', |
| 938 | bufio.read, 0) |
| 939 | bufio.__init__(self.MockRawIO()) |
| 940 | self.assertEqual(bufio.read(0), b'') |
| 941 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 942 | def test_read(self): |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 943 | for arg in (None, 7): |
| 944 | rawio = self.MockRawIO((b"abc", b"d", b"efg")) |
| 945 | bufio = self.tp(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 946 | self.assertEqual(b"abcdefg", bufio.read(arg)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 947 | # Invalid args |
| 948 | self.assertRaises(ValueError, bufio.read, -2) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 949 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 950 | def test_read1(self): |
| 951 | rawio = self.MockRawIO((b"abc", b"d", b"efg")) |
| 952 | bufio = self.tp(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 953 | self.assertEqual(b"a", bufio.read(1)) |
| 954 | self.assertEqual(b"b", bufio.read1(1)) |
| 955 | self.assertEqual(rawio._reads, 1) |
| 956 | self.assertEqual(b"c", bufio.read1(100)) |
| 957 | self.assertEqual(rawio._reads, 1) |
| 958 | self.assertEqual(b"d", bufio.read1(100)) |
| 959 | self.assertEqual(rawio._reads, 2) |
| 960 | self.assertEqual(b"efg", bufio.read1(100)) |
| 961 | self.assertEqual(rawio._reads, 3) |
| 962 | self.assertEqual(b"", bufio.read1(100)) |
| 963 | self.assertEqual(rawio._reads, 4) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 964 | # Invalid args |
| 965 | self.assertRaises(ValueError, bufio.read1, -1) |
| 966 | |
| 967 | def test_readinto(self): |
| 968 | rawio = self.MockRawIO((b"abc", b"d", b"efg")) |
| 969 | bufio = self.tp(rawio) |
| 970 | b = bytearray(2) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 971 | self.assertEqual(bufio.readinto(b), 2) |
| 972 | self.assertEqual(b, b"ab") |
| 973 | self.assertEqual(bufio.readinto(b), 2) |
| 974 | self.assertEqual(b, b"cd") |
| 975 | self.assertEqual(bufio.readinto(b), 2) |
| 976 | self.assertEqual(b, b"ef") |
| 977 | self.assertEqual(bufio.readinto(b), 1) |
| 978 | self.assertEqual(b, b"gf") |
| 979 | self.assertEqual(bufio.readinto(b), 0) |
| 980 | self.assertEqual(b, b"gf") |
Antoine Pitrou | 3486a98 | 2011-05-12 01:57:53 +0200 | [diff] [blame] | 981 | rawio = self.MockRawIO((b"abc", None)) |
| 982 | bufio = self.tp(rawio) |
| 983 | self.assertEqual(bufio.readinto(b), 2) |
| 984 | self.assertEqual(b, b"ab") |
| 985 | self.assertEqual(bufio.readinto(b), 1) |
| 986 | self.assertEqual(b, b"cb") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 987 | |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 988 | def test_readlines(self): |
| 989 | def bufio(): |
| 990 | rawio = self.MockRawIO((b"abc\n", b"d\n", b"ef")) |
| 991 | return self.tp(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 992 | self.assertEqual(bufio().readlines(), [b"abc\n", b"d\n", b"ef"]) |
| 993 | self.assertEqual(bufio().readlines(5), [b"abc\n", b"d\n"]) |
| 994 | self.assertEqual(bufio().readlines(None), [b"abc\n", b"d\n", b"ef"]) |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 995 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 996 | def test_buffering(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 997 | data = b"abcdefghi" |
| 998 | dlen = len(data) |
| 999 | |
| 1000 | tests = [ |
| 1001 | [ 100, [ 3, 1, 4, 8 ], [ dlen, 0 ] ], |
| 1002 | [ 100, [ 3, 3, 3], [ dlen ] ], |
| 1003 | [ 4, [ 1, 2, 4, 2 ], [ 4, 4, 1 ] ], |
| 1004 | ] |
| 1005 | |
| 1006 | for bufsize, buf_read_sizes, raw_read_sizes in tests: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1007 | rawio = self.MockFileIO(data) |
| 1008 | bufio = self.tp(rawio, buffer_size=bufsize) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 1009 | pos = 0 |
| 1010 | for nbytes in buf_read_sizes: |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1011 | self.assertEqual(bufio.read(nbytes), data[pos:pos+nbytes]) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 1012 | pos += nbytes |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1013 | # this is mildly implementation-dependent |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1014 | self.assertEqual(rawio.read_history, raw_read_sizes) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 1015 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1016 | def test_read_non_blocking(self): |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1017 | # Inject some None's in there to simulate EWOULDBLOCK |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1018 | rawio = self.MockRawIO((b"abc", b"d", None, b"efg", None, None, None)) |
| 1019 | bufio = self.tp(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1020 | self.assertEqual(b"abcd", bufio.read(6)) |
| 1021 | self.assertEqual(b"e", bufio.read(1)) |
| 1022 | self.assertEqual(b"fg", bufio.read()) |
| 1023 | self.assertEqual(b"", bufio.peek(1)) |
Victor Stinner | a80987f | 2011-05-25 22:47:16 +0200 | [diff] [blame] | 1024 | self.assertIsNone(bufio.read()) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1025 | self.assertEqual(b"", bufio.read()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1026 | |
Victor Stinner | a80987f | 2011-05-25 22:47:16 +0200 | [diff] [blame] | 1027 | rawio = self.MockRawIO((b"a", None, None)) |
| 1028 | self.assertEqual(b"a", rawio.readall()) |
| 1029 | self.assertIsNone(rawio.readall()) |
| 1030 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1031 | def test_read_past_eof(self): |
| 1032 | rawio = self.MockRawIO((b"abc", b"d", b"efg")) |
| 1033 | bufio = self.tp(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1034 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1035 | self.assertEqual(b"abcdefg", bufio.read(9000)) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1036 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1037 | def test_read_all(self): |
| 1038 | rawio = self.MockRawIO((b"abc", b"d", b"efg")) |
| 1039 | bufio = self.tp(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1040 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1041 | self.assertEqual(b"abcdefg", bufio.read()) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1042 | |
Victor Stinner | 45df820 | 2010-04-28 22:31:17 +0000 | [diff] [blame] | 1043 | @unittest.skipUnless(threading, 'Threading required for this test.') |
Antoine Pitrou | 5bc4fa7 | 2010-10-14 15:34:31 +0000 | [diff] [blame] | 1044 | @support.requires_resource('cpu') |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1045 | def test_threads(self): |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1046 | try: |
| 1047 | # Write out many bytes with exactly the same number of 0's, |
| 1048 | # 1's... 255's. This will help us check that concurrent reading |
| 1049 | # doesn't duplicate or forget contents. |
| 1050 | N = 1000 |
| 1051 | l = list(range(256)) * N |
| 1052 | random.shuffle(l) |
| 1053 | s = bytes(bytearray(l)) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1054 | with self.open(support.TESTFN, "wb") as f: |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1055 | f.write(s) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1056 | with self.open(support.TESTFN, self.read_mode, buffering=0) as raw: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1057 | bufio = self.tp(raw, 8) |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1058 | errors = [] |
| 1059 | results = [] |
| 1060 | def f(): |
| 1061 | try: |
| 1062 | # Intra-buffer read then buffer-flushing read |
| 1063 | for n in cycle([1, 19]): |
| 1064 | s = bufio.read(n) |
| 1065 | if not s: |
| 1066 | break |
| 1067 | # list.append() is atomic |
| 1068 | results.append(s) |
| 1069 | except Exception as e: |
| 1070 | errors.append(e) |
| 1071 | raise |
| 1072 | threads = [threading.Thread(target=f) for x in range(20)] |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 1073 | with support.start_threads(threads): |
| 1074 | time.sleep(0.02) # yield |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1075 | self.assertFalse(errors, |
| 1076 | "the following exceptions were caught: %r" % errors) |
| 1077 | s = b''.join(results) |
| 1078 | for i in range(256): |
| 1079 | c = bytes(bytearray([i])) |
| 1080 | self.assertEqual(s.count(c), N) |
| 1081 | finally: |
| 1082 | support.unlink(support.TESTFN) |
| 1083 | |
Antoine Pitrou | 1e44fec | 2011-10-04 12:26:20 +0200 | [diff] [blame] | 1084 | def test_unseekable(self): |
| 1085 | bufio = self.tp(self.MockUnseekableIO(b"A" * 10)) |
| 1086 | self.assertRaises(self.UnsupportedOperation, bufio.tell) |
| 1087 | self.assertRaises(self.UnsupportedOperation, bufio.seek, 0) |
| 1088 | bufio.read(1) |
| 1089 | self.assertRaises(self.UnsupportedOperation, bufio.seek, 0) |
| 1090 | self.assertRaises(self.UnsupportedOperation, bufio.tell) |
| 1091 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1092 | def test_misbehaved_io(self): |
| 1093 | rawio = self.MisbehavedRawIO((b"abc", b"d", b"efg")) |
| 1094 | bufio = self.tp(rawio) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1095 | self.assertRaises(OSError, bufio.seek, 0) |
| 1096 | self.assertRaises(OSError, bufio.tell) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1097 | |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 1098 | def test_no_extraneous_read(self): |
| 1099 | # Issue #9550; when the raw IO object has satisfied the read request, |
| 1100 | # we should not issue any additional reads, otherwise it may block |
| 1101 | # (e.g. socket). |
| 1102 | bufsize = 16 |
| 1103 | for n in (2, bufsize - 1, bufsize, bufsize + 1, bufsize * 2): |
| 1104 | rawio = self.MockRawIO([b"x" * n]) |
| 1105 | bufio = self.tp(rawio, bufsize) |
| 1106 | self.assertEqual(bufio.read(n), b"x" * n) |
| 1107 | # Simple case: one raw read is enough to satisfy the request. |
| 1108 | self.assertEqual(rawio._extraneous_reads, 0, |
| 1109 | "failed for {}: {} != 0".format(n, rawio._extraneous_reads)) |
| 1110 | # A more complex case where two raw reads are needed to satisfy |
| 1111 | # the request. |
| 1112 | rawio = self.MockRawIO([b"x" * (n - 1), b"x"]) |
| 1113 | bufio = self.tp(rawio, bufsize) |
| 1114 | self.assertEqual(bufio.read(n), b"x" * n) |
| 1115 | self.assertEqual(rawio._extraneous_reads, 0, |
| 1116 | "failed for {}: {} != 0".format(n, rawio._extraneous_reads)) |
| 1117 | |
Berker Peksag | ea6d559 | 2015-05-12 17:13:56 +0300 | [diff] [blame] | 1118 | def test_read_on_closed(self): |
| 1119 | # Issue #23796 |
| 1120 | b = io.BufferedReader(io.BytesIO(b"12")) |
| 1121 | b.read(1) |
| 1122 | b.close() |
| 1123 | self.assertRaises(ValueError, b.peek) |
| 1124 | self.assertRaises(ValueError, b.read1, 1) |
| 1125 | |
Antoine Pitrou | 32cfede | 2010-08-11 13:31:33 +0000 | [diff] [blame] | 1126 | |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 1127 | class CBufferedReaderTest(BufferedReaderTest, SizeofTest): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1128 | tp = io.BufferedReader |
| 1129 | |
| 1130 | def test_constructor(self): |
| 1131 | BufferedReaderTest.test_constructor(self) |
| 1132 | # The allocation can succeed on 32-bit builds, e.g. with more |
| 1133 | # than 2GB RAM and a 64-bit kernel. |
| 1134 | if sys.maxsize > 0x7FFFFFFF: |
| 1135 | rawio = self.MockRawIO() |
| 1136 | bufio = self.tp(rawio) |
| 1137 | self.assertRaises((OverflowError, MemoryError, ValueError), |
| 1138 | bufio.__init__, rawio, sys.maxsize) |
| 1139 | |
| 1140 | def test_initialization(self): |
| 1141 | rawio = self.MockRawIO([b"abc"]) |
| 1142 | bufio = self.tp(rawio) |
| 1143 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=0) |
| 1144 | self.assertRaises(ValueError, bufio.read) |
| 1145 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-16) |
| 1146 | self.assertRaises(ValueError, bufio.read) |
| 1147 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-1) |
| 1148 | self.assertRaises(ValueError, bufio.read) |
| 1149 | |
| 1150 | def test_misbehaved_io_read(self): |
| 1151 | rawio = self.MisbehavedRawIO((b"abc", b"d", b"efg")) |
| 1152 | bufio = self.tp(rawio) |
| 1153 | # _pyio.BufferedReader seems to implement reading different, so that |
| 1154 | # checking this is not so easy. |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1155 | self.assertRaises(OSError, bufio.read, 10) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1156 | |
| 1157 | def test_garbage_collection(self): |
| 1158 | # C BufferedReader objects are collected. |
| 1159 | # The Python version has __del__, so it ends into gc.garbage instead |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 1160 | with support.check_warnings(('', ResourceWarning)): |
| 1161 | rawio = self.FileIO(support.TESTFN, "w+b") |
| 1162 | f = self.tp(rawio) |
| 1163 | f.f = f |
| 1164 | wr = weakref.ref(f) |
| 1165 | del f |
| 1166 | support.gc_collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 1167 | self.assertTrue(wr() is None, wr) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1168 | |
R David Murray | 67bfe80 | 2013-02-23 21:51:05 -0500 | [diff] [blame] | 1169 | def test_args_error(self): |
| 1170 | # Issue #17275 |
| 1171 | with self.assertRaisesRegex(TypeError, "BufferedReader"): |
| 1172 | self.tp(io.BytesIO(), 1024, 1024, 1024) |
| 1173 | |
| 1174 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1175 | class PyBufferedReaderTest(BufferedReaderTest): |
| 1176 | tp = pyio.BufferedReader |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1177 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1178 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1179 | class BufferedWriterTest(unittest.TestCase, CommonBufferedTests): |
| 1180 | write_mode = "wb" |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1181 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1182 | def test_constructor(self): |
| 1183 | rawio = self.MockRawIO() |
| 1184 | bufio = self.tp(rawio) |
| 1185 | bufio.__init__(rawio) |
| 1186 | bufio.__init__(rawio, buffer_size=1024) |
| 1187 | bufio.__init__(rawio, buffer_size=16) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1188 | self.assertEqual(3, bufio.write(b"abc")) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1189 | bufio.flush() |
| 1190 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=0) |
| 1191 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-16) |
| 1192 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-1) |
| 1193 | bufio.__init__(rawio) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1194 | self.assertEqual(3, bufio.write(b"ghi")) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1195 | bufio.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1196 | self.assertEqual(b"".join(rawio._write_stack), b"abcghi") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1197 | |
Serhiy Storchaka | 61e2493 | 2014-02-12 10:52:35 +0200 | [diff] [blame] | 1198 | def test_uninitialized(self): |
| 1199 | bufio = self.tp.__new__(self.tp) |
| 1200 | del bufio |
| 1201 | bufio = self.tp.__new__(self.tp) |
| 1202 | self.assertRaisesRegex((ValueError, AttributeError), |
| 1203 | 'uninitialized|has no attribute', |
| 1204 | bufio.write, b'') |
| 1205 | bufio.__init__(self.MockRawIO()) |
| 1206 | self.assertEqual(bufio.write(b''), 0) |
| 1207 | |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1208 | def test_detach_flush(self): |
| 1209 | raw = self.MockRawIO() |
| 1210 | buf = self.tp(raw) |
| 1211 | buf.write(b"howdy!") |
| 1212 | self.assertFalse(raw._write_stack) |
| 1213 | buf.detach() |
| 1214 | self.assertEqual(raw._write_stack, [b"howdy!"]) |
| 1215 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1216 | def test_write(self): |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1217 | # Write to the buffered IO but don't overflow the buffer. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1218 | writer = self.MockRawIO() |
| 1219 | bufio = self.tp(writer, 8) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 1220 | bufio.write(b"abc") |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 1221 | self.assertFalse(writer._write_stack) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1222 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1223 | def test_write_overflow(self): |
| 1224 | writer = self.MockRawIO() |
| 1225 | bufio = self.tp(writer, 8) |
| 1226 | contents = b"abcdefghijklmnop" |
| 1227 | for n in range(0, len(contents), 3): |
| 1228 | bufio.write(contents[n:n+3]) |
| 1229 | flushed = b"".join(writer._write_stack) |
| 1230 | # At least (total - 8) bytes were implicitly flushed, perhaps more |
| 1231 | # depending on the implementation. |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 1232 | self.assertTrue(flushed.startswith(contents[:-8]), flushed) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1233 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1234 | def check_writes(self, intermediate_func): |
| 1235 | # Lots of writes, test the flushed output is as expected. |
| 1236 | contents = bytes(range(256)) * 1000 |
| 1237 | n = 0 |
| 1238 | writer = self.MockRawIO() |
| 1239 | bufio = self.tp(writer, 13) |
| 1240 | # Generator of write sizes: repeat each N 15 times then proceed to N+1 |
| 1241 | def gen_sizes(): |
| 1242 | for size in count(1): |
| 1243 | for i in range(15): |
| 1244 | yield size |
| 1245 | sizes = gen_sizes() |
| 1246 | while n < len(contents): |
| 1247 | size = min(next(sizes), len(contents) - n) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1248 | self.assertEqual(bufio.write(contents[n:n+size]), size) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1249 | intermediate_func(bufio) |
| 1250 | n += size |
| 1251 | bufio.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1252 | self.assertEqual(contents, b"".join(writer._write_stack)) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1253 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1254 | def test_writes(self): |
| 1255 | self.check_writes(lambda bufio: None) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1256 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1257 | def test_writes_and_flushes(self): |
| 1258 | self.check_writes(lambda bufio: bufio.flush()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1259 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1260 | def test_writes_and_seeks(self): |
| 1261 | def _seekabs(bufio): |
| 1262 | pos = bufio.tell() |
| 1263 | bufio.seek(pos + 1, 0) |
| 1264 | bufio.seek(pos - 1, 0) |
| 1265 | bufio.seek(pos, 0) |
| 1266 | self.check_writes(_seekabs) |
| 1267 | def _seekrel(bufio): |
| 1268 | pos = bufio.seek(0, 1) |
| 1269 | bufio.seek(+1, 1) |
| 1270 | bufio.seek(-1, 1) |
| 1271 | bufio.seek(pos, 0) |
| 1272 | self.check_writes(_seekrel) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1273 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1274 | def test_writes_and_truncates(self): |
| 1275 | self.check_writes(lambda bufio: bufio.truncate(bufio.tell())) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1276 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1277 | def test_write_non_blocking(self): |
| 1278 | raw = self.MockNonBlockWriterIO() |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1279 | bufio = self.tp(raw, 8) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1280 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1281 | self.assertEqual(bufio.write(b"abcd"), 4) |
| 1282 | self.assertEqual(bufio.write(b"efghi"), 5) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1283 | # 1 byte will be written, the rest will be buffered |
| 1284 | raw.block_on(b"k") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1285 | self.assertEqual(bufio.write(b"jklmn"), 5) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1286 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1287 | # 8 bytes will be written, 8 will be buffered and the rest will be lost |
| 1288 | raw.block_on(b"0") |
| 1289 | try: |
| 1290 | bufio.write(b"opqrwxyz0123456789") |
| 1291 | except self.BlockingIOError as e: |
| 1292 | written = e.characters_written |
| 1293 | else: |
| 1294 | self.fail("BlockingIOError should have been raised") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1295 | self.assertEqual(written, 16) |
| 1296 | self.assertEqual(raw.pop_written(), |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1297 | b"abcdefghijklmnopqrwxyz") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1298 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1299 | self.assertEqual(bufio.write(b"ABCDEFGHI"), 9) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1300 | s = raw.pop_written() |
| 1301 | # Previously buffered bytes were flushed |
| 1302 | self.assertTrue(s.startswith(b"01234567A"), s) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1303 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1304 | def test_write_and_rewind(self): |
| 1305 | raw = io.BytesIO() |
| 1306 | bufio = self.tp(raw, 4) |
| 1307 | self.assertEqual(bufio.write(b"abcdef"), 6) |
| 1308 | self.assertEqual(bufio.tell(), 6) |
| 1309 | bufio.seek(0, 0) |
| 1310 | self.assertEqual(bufio.write(b"XY"), 2) |
| 1311 | bufio.seek(6, 0) |
| 1312 | self.assertEqual(raw.getvalue(), b"XYcdef") |
| 1313 | self.assertEqual(bufio.write(b"123456"), 6) |
| 1314 | bufio.flush() |
| 1315 | self.assertEqual(raw.getvalue(), b"XYcdef123456") |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1316 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1317 | def test_flush(self): |
| 1318 | writer = self.MockRawIO() |
| 1319 | bufio = self.tp(writer, 8) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 1320 | bufio.write(b"abc") |
| 1321 | bufio.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1322 | self.assertEqual(b"abc", writer._write_stack[0]) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1323 | |
Antoine Pitrou | 131a489 | 2012-10-16 22:57:11 +0200 | [diff] [blame] | 1324 | def test_writelines(self): |
| 1325 | l = [b'ab', b'cd', b'ef'] |
| 1326 | writer = self.MockRawIO() |
| 1327 | bufio = self.tp(writer, 8) |
| 1328 | bufio.writelines(l) |
| 1329 | bufio.flush() |
| 1330 | self.assertEqual(b''.join(writer._write_stack), b'abcdef') |
| 1331 | |
| 1332 | def test_writelines_userlist(self): |
| 1333 | l = UserList([b'ab', b'cd', b'ef']) |
| 1334 | writer = self.MockRawIO() |
| 1335 | bufio = self.tp(writer, 8) |
| 1336 | bufio.writelines(l) |
| 1337 | bufio.flush() |
| 1338 | self.assertEqual(b''.join(writer._write_stack), b'abcdef') |
| 1339 | |
| 1340 | def test_writelines_error(self): |
| 1341 | writer = self.MockRawIO() |
| 1342 | bufio = self.tp(writer, 8) |
| 1343 | self.assertRaises(TypeError, bufio.writelines, [1, 2, 3]) |
| 1344 | self.assertRaises(TypeError, bufio.writelines, None) |
| 1345 | self.assertRaises(TypeError, bufio.writelines, 'abc') |
| 1346 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1347 | def test_destructor(self): |
| 1348 | writer = self.MockRawIO() |
| 1349 | bufio = self.tp(writer, 8) |
| 1350 | bufio.write(b"abc") |
| 1351 | del bufio |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 1352 | support.gc_collect() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1353 | self.assertEqual(b"abc", writer._write_stack[0]) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1354 | |
| 1355 | def test_truncate(self): |
| 1356 | # Truncate implicitly flushes the buffer. |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1357 | with self.open(support.TESTFN, self.write_mode, buffering=0) as raw: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1358 | bufio = self.tp(raw, 8) |
| 1359 | bufio.write(b"abcdef") |
| 1360 | self.assertEqual(bufio.truncate(3), 3) |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 1361 | self.assertEqual(bufio.tell(), 6) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1362 | with self.open(support.TESTFN, "rb", buffering=0) as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1363 | self.assertEqual(f.read(), b"abc") |
| 1364 | |
Victor Stinner | 45df820 | 2010-04-28 22:31:17 +0000 | [diff] [blame] | 1365 | @unittest.skipUnless(threading, 'Threading required for this test.') |
Antoine Pitrou | 5bc4fa7 | 2010-10-14 15:34:31 +0000 | [diff] [blame] | 1366 | @support.requires_resource('cpu') |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1367 | def test_threads(self): |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1368 | try: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1369 | # Write out many bytes from many threads and test they were |
| 1370 | # all flushed. |
| 1371 | N = 1000 |
| 1372 | contents = bytes(range(256)) * N |
| 1373 | sizes = cycle([1, 19]) |
| 1374 | n = 0 |
| 1375 | queue = deque() |
| 1376 | while n < len(contents): |
| 1377 | size = next(sizes) |
| 1378 | queue.append(contents[n:n+size]) |
| 1379 | n += size |
| 1380 | del contents |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1381 | # We use a real file object because it allows us to |
| 1382 | # exercise situations where the GIL is released before |
| 1383 | # writing the buffer to the raw streams. This is in addition |
| 1384 | # to concurrency issues due to switching threads in the middle |
| 1385 | # of Python code. |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1386 | with self.open(support.TESTFN, self.write_mode, buffering=0) as raw: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1387 | bufio = self.tp(raw, 8) |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1388 | errors = [] |
| 1389 | def f(): |
| 1390 | try: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1391 | while True: |
| 1392 | try: |
| 1393 | s = queue.popleft() |
| 1394 | except IndexError: |
| 1395 | return |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1396 | bufio.write(s) |
| 1397 | except Exception as e: |
| 1398 | errors.append(e) |
| 1399 | raise |
| 1400 | threads = [threading.Thread(target=f) for x in range(20)] |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 1401 | with support.start_threads(threads): |
| 1402 | time.sleep(0.02) # yield |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1403 | self.assertFalse(errors, |
| 1404 | "the following exceptions were caught: %r" % errors) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1405 | bufio.close() |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1406 | with self.open(support.TESTFN, "rb") as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1407 | s = f.read() |
| 1408 | for i in range(256): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1409 | self.assertEqual(s.count(bytes([i])), N) |
Antoine Pitrou | 8769576 | 2008-08-14 22:44:29 +0000 | [diff] [blame] | 1410 | finally: |
| 1411 | support.unlink(support.TESTFN) |
| 1412 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1413 | def test_misbehaved_io(self): |
| 1414 | rawio = self.MisbehavedRawIO() |
| 1415 | bufio = self.tp(rawio, 5) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1416 | self.assertRaises(OSError, bufio.seek, 0) |
| 1417 | self.assertRaises(OSError, bufio.tell) |
| 1418 | self.assertRaises(OSError, bufio.write, b"abcdef") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1419 | |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1420 | def test_max_buffer_size_removal(self): |
| 1421 | with self.assertRaises(TypeError): |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1422 | self.tp(self.MockRawIO(), 8, 12) |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1423 | |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 1424 | def test_write_error_on_close(self): |
| 1425 | raw = self.MockRawIO() |
| 1426 | def bad_write(b): |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1427 | raise OSError() |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 1428 | raw.write = bad_write |
| 1429 | b = self.tp(raw) |
| 1430 | b.write(b'spam') |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1431 | self.assertRaises(OSError, b.close) # exception not swallowed |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 1432 | self.assertTrue(b.closed) |
| 1433 | |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1434 | |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 1435 | class CBufferedWriterTest(BufferedWriterTest, SizeofTest): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1436 | tp = io.BufferedWriter |
| 1437 | |
| 1438 | def test_constructor(self): |
| 1439 | BufferedWriterTest.test_constructor(self) |
| 1440 | # The allocation can succeed on 32-bit builds, e.g. with more |
| 1441 | # than 2GB RAM and a 64-bit kernel. |
| 1442 | if sys.maxsize > 0x7FFFFFFF: |
| 1443 | rawio = self.MockRawIO() |
| 1444 | bufio = self.tp(rawio) |
| 1445 | self.assertRaises((OverflowError, MemoryError, ValueError), |
| 1446 | bufio.__init__, rawio, sys.maxsize) |
| 1447 | |
| 1448 | def test_initialization(self): |
| 1449 | rawio = self.MockRawIO() |
| 1450 | bufio = self.tp(rawio) |
| 1451 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=0) |
| 1452 | self.assertRaises(ValueError, bufio.write, b"def") |
| 1453 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-16) |
| 1454 | self.assertRaises(ValueError, bufio.write, b"def") |
| 1455 | self.assertRaises(ValueError, bufio.__init__, rawio, buffer_size=-1) |
| 1456 | self.assertRaises(ValueError, bufio.write, b"def") |
| 1457 | |
| 1458 | def test_garbage_collection(self): |
| 1459 | # C BufferedWriter objects are collected, and collecting them flushes |
| 1460 | # all data to disk. |
| 1461 | # The Python version has __del__, so it ends into gc.garbage instead |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 1462 | with support.check_warnings(('', ResourceWarning)): |
| 1463 | rawio = self.FileIO(support.TESTFN, "w+b") |
| 1464 | f = self.tp(rawio) |
| 1465 | f.write(b"123xxx") |
| 1466 | f.x = f |
| 1467 | wr = weakref.ref(f) |
| 1468 | del f |
| 1469 | support.gc_collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 1470 | self.assertTrue(wr() is None, wr) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 1471 | with self.open(support.TESTFN, "rb") as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1472 | self.assertEqual(f.read(), b"123xxx") |
| 1473 | |
R David Murray | 67bfe80 | 2013-02-23 21:51:05 -0500 | [diff] [blame] | 1474 | def test_args_error(self): |
| 1475 | # Issue #17275 |
| 1476 | with self.assertRaisesRegex(TypeError, "BufferedWriter"): |
| 1477 | self.tp(io.BytesIO(), 1024, 1024, 1024) |
| 1478 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1479 | |
| 1480 | class PyBufferedWriterTest(BufferedWriterTest): |
| 1481 | tp = pyio.BufferedWriter |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1482 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1483 | class BufferedRWPairTest(unittest.TestCase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1484 | |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1485 | def test_constructor(self): |
| 1486 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
Benjamin Peterson | 9203501 | 2008-12-27 16:00:54 +0000 | [diff] [blame] | 1487 | self.assertFalse(pair.closed) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1488 | |
Serhiy Storchaka | 61e2493 | 2014-02-12 10:52:35 +0200 | [diff] [blame] | 1489 | def test_uninitialized(self): |
| 1490 | pair = self.tp.__new__(self.tp) |
| 1491 | del pair |
| 1492 | pair = self.tp.__new__(self.tp) |
| 1493 | self.assertRaisesRegex((ValueError, AttributeError), |
| 1494 | 'uninitialized|has no attribute', |
| 1495 | pair.read, 0) |
| 1496 | self.assertRaisesRegex((ValueError, AttributeError), |
| 1497 | 'uninitialized|has no attribute', |
| 1498 | pair.write, b'') |
| 1499 | pair.__init__(self.MockRawIO(), self.MockRawIO()) |
| 1500 | self.assertEqual(pair.read(0), b'') |
| 1501 | self.assertEqual(pair.write(b''), 0) |
| 1502 | |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 1503 | def test_detach(self): |
| 1504 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1505 | self.assertRaises(self.UnsupportedOperation, pair.detach) |
| 1506 | |
Florent Xicluna | 109d573 | 2012-07-07 17:03:22 +0200 | [diff] [blame] | 1507 | def test_constructor_max_buffer_size_removal(self): |
| 1508 | with self.assertRaises(TypeError): |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1509 | self.tp(self.MockRawIO(), self.MockRawIO(), 8, 12) |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1510 | |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1511 | def test_constructor_with_not_readable(self): |
| 1512 | class NotReadable(MockRawIO): |
| 1513 | def readable(self): |
| 1514 | return False |
| 1515 | |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1516 | self.assertRaises(OSError, self.tp, NotReadable(), self.MockRawIO()) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1517 | |
| 1518 | def test_constructor_with_not_writeable(self): |
| 1519 | class NotWriteable(MockRawIO): |
| 1520 | def writable(self): |
| 1521 | return False |
| 1522 | |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 1523 | self.assertRaises(OSError, self.tp, self.MockRawIO(), NotWriteable()) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1524 | |
| 1525 | def test_read(self): |
| 1526 | pair = self.tp(self.BytesIO(b"abcdef"), self.MockRawIO()) |
| 1527 | |
| 1528 | self.assertEqual(pair.read(3), b"abc") |
| 1529 | self.assertEqual(pair.read(1), b"d") |
| 1530 | self.assertEqual(pair.read(), b"ef") |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 1531 | pair = self.tp(self.BytesIO(b"abc"), self.MockRawIO()) |
| 1532 | self.assertEqual(pair.read(None), b"abc") |
| 1533 | |
| 1534 | def test_readlines(self): |
| 1535 | pair = lambda: self.tp(self.BytesIO(b"abc\ndef\nh"), self.MockRawIO()) |
| 1536 | self.assertEqual(pair().readlines(), [b"abc\n", b"def\n", b"h"]) |
| 1537 | self.assertEqual(pair().readlines(), [b"abc\n", b"def\n", b"h"]) |
| 1538 | self.assertEqual(pair().readlines(5), [b"abc\n", b"def\n"]) |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1539 | |
| 1540 | def test_read1(self): |
| 1541 | # .read1() is delegated to the underlying reader object, so this test |
| 1542 | # can be shallow. |
| 1543 | pair = self.tp(self.BytesIO(b"abcdef"), self.MockRawIO()) |
| 1544 | |
| 1545 | self.assertEqual(pair.read1(3), b"abc") |
| 1546 | |
| 1547 | def test_readinto(self): |
| 1548 | pair = self.tp(self.BytesIO(b"abcdef"), self.MockRawIO()) |
| 1549 | |
| 1550 | data = bytearray(5) |
| 1551 | self.assertEqual(pair.readinto(data), 5) |
| 1552 | self.assertEqual(data, b"abcde") |
| 1553 | |
| 1554 | def test_write(self): |
| 1555 | w = self.MockRawIO() |
| 1556 | pair = self.tp(self.MockRawIO(), w) |
| 1557 | |
| 1558 | pair.write(b"abc") |
| 1559 | pair.flush() |
| 1560 | pair.write(b"def") |
| 1561 | pair.flush() |
| 1562 | self.assertEqual(w._write_stack, [b"abc", b"def"]) |
| 1563 | |
| 1564 | def test_peek(self): |
| 1565 | pair = self.tp(self.BytesIO(b"abcdef"), self.MockRawIO()) |
| 1566 | |
| 1567 | self.assertTrue(pair.peek(3).startswith(b"abc")) |
| 1568 | self.assertEqual(pair.read(3), b"abc") |
| 1569 | |
| 1570 | def test_readable(self): |
| 1571 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1572 | self.assertTrue(pair.readable()) |
| 1573 | |
| 1574 | def test_writeable(self): |
| 1575 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1576 | self.assertTrue(pair.writable()) |
| 1577 | |
| 1578 | def test_seekable(self): |
| 1579 | # BufferedRWPairs are never seekable, even if their readers and writers |
| 1580 | # are. |
| 1581 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1582 | self.assertFalse(pair.seekable()) |
| 1583 | |
| 1584 | # .flush() is delegated to the underlying writer object and has been |
| 1585 | # tested in the test_write method. |
| 1586 | |
| 1587 | def test_close_and_closed(self): |
| 1588 | pair = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1589 | self.assertFalse(pair.closed) |
| 1590 | pair.close() |
| 1591 | self.assertTrue(pair.closed) |
| 1592 | |
Serhiy Storchaka | 7665be6 | 2015-03-24 23:21:57 +0200 | [diff] [blame] | 1593 | def test_reader_close_error_on_close(self): |
| 1594 | def reader_close(): |
| 1595 | reader_non_existing |
| 1596 | reader = self.MockRawIO() |
| 1597 | reader.close = reader_close |
| 1598 | writer = self.MockRawIO() |
| 1599 | pair = self.tp(reader, writer) |
| 1600 | with self.assertRaises(NameError) as err: |
| 1601 | pair.close() |
| 1602 | self.assertIn('reader_non_existing', str(err.exception)) |
| 1603 | self.assertTrue(pair.closed) |
| 1604 | self.assertFalse(reader.closed) |
| 1605 | self.assertTrue(writer.closed) |
| 1606 | |
| 1607 | def test_writer_close_error_on_close(self): |
| 1608 | def writer_close(): |
| 1609 | writer_non_existing |
| 1610 | reader = self.MockRawIO() |
| 1611 | writer = self.MockRawIO() |
| 1612 | writer.close = writer_close |
| 1613 | pair = self.tp(reader, writer) |
| 1614 | with self.assertRaises(NameError) as err: |
| 1615 | pair.close() |
| 1616 | self.assertIn('writer_non_existing', str(err.exception)) |
| 1617 | self.assertFalse(pair.closed) |
| 1618 | self.assertTrue(reader.closed) |
| 1619 | self.assertFalse(writer.closed) |
| 1620 | |
| 1621 | def test_reader_writer_close_error_on_close(self): |
| 1622 | def reader_close(): |
| 1623 | reader_non_existing |
| 1624 | def writer_close(): |
| 1625 | writer_non_existing |
| 1626 | reader = self.MockRawIO() |
| 1627 | reader.close = reader_close |
| 1628 | writer = self.MockRawIO() |
| 1629 | writer.close = writer_close |
| 1630 | pair = self.tp(reader, writer) |
| 1631 | with self.assertRaises(NameError) as err: |
| 1632 | pair.close() |
| 1633 | self.assertIn('reader_non_existing', str(err.exception)) |
| 1634 | self.assertIsInstance(err.exception.__context__, NameError) |
| 1635 | self.assertIn('writer_non_existing', str(err.exception.__context__)) |
| 1636 | self.assertFalse(pair.closed) |
| 1637 | self.assertFalse(reader.closed) |
| 1638 | self.assertFalse(writer.closed) |
| 1639 | |
Antoine Pitrou | cf4c749 | 2009-04-19 00:09:36 +0000 | [diff] [blame] | 1640 | def test_isatty(self): |
| 1641 | class SelectableIsAtty(MockRawIO): |
| 1642 | def __init__(self, isatty): |
| 1643 | MockRawIO.__init__(self) |
| 1644 | self._isatty = isatty |
| 1645 | |
| 1646 | def isatty(self): |
| 1647 | return self._isatty |
| 1648 | |
| 1649 | pair = self.tp(SelectableIsAtty(False), SelectableIsAtty(False)) |
| 1650 | self.assertFalse(pair.isatty()) |
| 1651 | |
| 1652 | pair = self.tp(SelectableIsAtty(True), SelectableIsAtty(False)) |
| 1653 | self.assertTrue(pair.isatty()) |
| 1654 | |
| 1655 | pair = self.tp(SelectableIsAtty(False), SelectableIsAtty(True)) |
| 1656 | self.assertTrue(pair.isatty()) |
| 1657 | |
| 1658 | pair = self.tp(SelectableIsAtty(True), SelectableIsAtty(True)) |
| 1659 | self.assertTrue(pair.isatty()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1660 | |
Benjamin Peterson | bbd0a32 | 2014-09-29 22:46:57 -0400 | [diff] [blame] | 1661 | def test_weakref_clearing(self): |
| 1662 | brw = self.tp(self.MockRawIO(), self.MockRawIO()) |
| 1663 | ref = weakref.ref(brw) |
| 1664 | brw = None |
| 1665 | ref = None # Shouldn't segfault. |
| 1666 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1667 | class CBufferedRWPairTest(BufferedRWPairTest): |
| 1668 | tp = io.BufferedRWPair |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1669 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1670 | class PyBufferedRWPairTest(BufferedRWPairTest): |
| 1671 | tp = pyio.BufferedRWPair |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 1672 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1673 | |
| 1674 | class BufferedRandomTest(BufferedReaderTest, BufferedWriterTest): |
| 1675 | read_mode = "rb+" |
| 1676 | write_mode = "wb+" |
| 1677 | |
| 1678 | def test_constructor(self): |
| 1679 | BufferedReaderTest.test_constructor(self) |
| 1680 | BufferedWriterTest.test_constructor(self) |
| 1681 | |
Serhiy Storchaka | 61e2493 | 2014-02-12 10:52:35 +0200 | [diff] [blame] | 1682 | def test_uninitialized(self): |
| 1683 | BufferedReaderTest.test_uninitialized(self) |
| 1684 | BufferedWriterTest.test_uninitialized(self) |
| 1685 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1686 | def test_read_and_write(self): |
| 1687 | raw = self.MockRawIO((b"asdf", b"ghjk")) |
Benjamin Peterson | 59406a9 | 2009-03-26 17:10:29 +0000 | [diff] [blame] | 1688 | rw = self.tp(raw, 8) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1689 | |
| 1690 | self.assertEqual(b"as", rw.read(2)) |
| 1691 | rw.write(b"ddd") |
| 1692 | rw.write(b"eee") |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 1693 | self.assertFalse(raw._write_stack) # Buffer writes |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1694 | self.assertEqual(b"ghjk", rw.read()) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1695 | self.assertEqual(b"dddeee", raw._write_stack[0]) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1696 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1697 | def test_seek_and_tell(self): |
| 1698 | raw = self.BytesIO(b"asdfghjkl") |
| 1699 | rw = self.tp(raw) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1700 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1701 | self.assertEqual(b"as", rw.read(2)) |
| 1702 | self.assertEqual(2, rw.tell()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1703 | rw.seek(0, 0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1704 | self.assertEqual(b"asdf", rw.read(4)) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1705 | |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1706 | rw.write(b"123f") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1707 | rw.seek(0, 0) |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1708 | self.assertEqual(b"asdf123fl", rw.read()) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1709 | self.assertEqual(9, rw.tell()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1710 | rw.seek(-4, 2) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1711 | self.assertEqual(5, rw.tell()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1712 | rw.seek(2, 1) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1713 | self.assertEqual(7, rw.tell()) |
| 1714 | self.assertEqual(b"fl", rw.read(11)) |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1715 | rw.flush() |
| 1716 | self.assertEqual(b"asdf123fl", raw.getvalue()) |
| 1717 | |
Christian Heimes | 8e42a0a | 2007-11-08 18:04:45 +0000 | [diff] [blame] | 1718 | self.assertRaises(TypeError, rw.seek, 0.0) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 1719 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1720 | def check_flush_and_read(self, read_func): |
| 1721 | raw = self.BytesIO(b"abcdefghi") |
| 1722 | bufio = self.tp(raw) |
| 1723 | |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1724 | self.assertEqual(b"ab", read_func(bufio, 2)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1725 | bufio.write(b"12") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1726 | self.assertEqual(b"ef", read_func(bufio, 2)) |
| 1727 | self.assertEqual(6, bufio.tell()) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1728 | bufio.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1729 | self.assertEqual(6, bufio.tell()) |
| 1730 | self.assertEqual(b"ghi", read_func(bufio)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1731 | raw.seek(0, 0) |
| 1732 | raw.write(b"XYZ") |
| 1733 | # flush() resets the read buffer |
| 1734 | bufio.flush() |
| 1735 | bufio.seek(0, 0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1736 | self.assertEqual(b"XYZ", read_func(bufio, 3)) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1737 | |
| 1738 | def test_flush_and_read(self): |
| 1739 | self.check_flush_and_read(lambda bufio, *args: bufio.read(*args)) |
| 1740 | |
| 1741 | def test_flush_and_readinto(self): |
| 1742 | def _readinto(bufio, n=-1): |
| 1743 | b = bytearray(n if n >= 0 else 9999) |
| 1744 | n = bufio.readinto(b) |
| 1745 | return bytes(b[:n]) |
| 1746 | self.check_flush_and_read(_readinto) |
| 1747 | |
| 1748 | def test_flush_and_peek(self): |
| 1749 | def _peek(bufio, n=-1): |
| 1750 | # This relies on the fact that the buffer can contain the whole |
| 1751 | # raw stream, otherwise peek() can return less. |
| 1752 | b = bufio.peek(n) |
| 1753 | if n != -1: |
| 1754 | b = b[:n] |
| 1755 | bufio.seek(len(b), 1) |
| 1756 | return b |
| 1757 | self.check_flush_and_read(_peek) |
| 1758 | |
| 1759 | def test_flush_and_write(self): |
| 1760 | raw = self.BytesIO(b"abcdefghi") |
| 1761 | bufio = self.tp(raw) |
| 1762 | |
| 1763 | bufio.write(b"123") |
| 1764 | bufio.flush() |
| 1765 | bufio.write(b"45") |
| 1766 | bufio.flush() |
| 1767 | bufio.seek(0, 0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 1768 | self.assertEqual(b"12345fghi", raw.getvalue()) |
| 1769 | self.assertEqual(b"12345fghi", bufio.read()) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1770 | |
| 1771 | def test_threads(self): |
| 1772 | BufferedReaderTest.test_threads(self) |
| 1773 | BufferedWriterTest.test_threads(self) |
| 1774 | |
| 1775 | def test_writes_and_peek(self): |
| 1776 | def _peek(bufio): |
| 1777 | bufio.peek(1) |
| 1778 | self.check_writes(_peek) |
| 1779 | def _peek(bufio): |
| 1780 | pos = bufio.tell() |
| 1781 | bufio.seek(-1, 1) |
| 1782 | bufio.peek(1) |
| 1783 | bufio.seek(pos, 0) |
| 1784 | self.check_writes(_peek) |
| 1785 | |
| 1786 | def test_writes_and_reads(self): |
| 1787 | def _read(bufio): |
| 1788 | bufio.seek(-1, 1) |
| 1789 | bufio.read(1) |
| 1790 | self.check_writes(_read) |
| 1791 | |
| 1792 | def test_writes_and_read1s(self): |
| 1793 | def _read1(bufio): |
| 1794 | bufio.seek(-1, 1) |
| 1795 | bufio.read1(1) |
| 1796 | self.check_writes(_read1) |
| 1797 | |
| 1798 | def test_writes_and_readintos(self): |
| 1799 | def _read(bufio): |
| 1800 | bufio.seek(-1, 1) |
| 1801 | bufio.readinto(bytearray(1)) |
| 1802 | self.check_writes(_read) |
| 1803 | |
Antoine Pitrou | a0ceb73 | 2009-08-06 20:29:56 +0000 | [diff] [blame] | 1804 | def test_write_after_readahead(self): |
| 1805 | # Issue #6629: writing after the buffer was filled by readahead should |
| 1806 | # first rewind the raw stream. |
| 1807 | for overwrite_size in [1, 5]: |
| 1808 | raw = self.BytesIO(b"A" * 10) |
| 1809 | bufio = self.tp(raw, 4) |
| 1810 | # Trigger readahead |
| 1811 | self.assertEqual(bufio.read(1), b"A") |
| 1812 | self.assertEqual(bufio.tell(), 1) |
| 1813 | # Overwriting should rewind the raw stream if it needs so |
| 1814 | bufio.write(b"B" * overwrite_size) |
| 1815 | self.assertEqual(bufio.tell(), overwrite_size + 1) |
| 1816 | # If the write size was smaller than the buffer size, flush() and |
| 1817 | # check that rewind happens. |
| 1818 | bufio.flush() |
| 1819 | self.assertEqual(bufio.tell(), overwrite_size + 1) |
| 1820 | s = raw.getvalue() |
| 1821 | self.assertEqual(s, |
| 1822 | b"A" + b"B" * overwrite_size + b"A" * (9 - overwrite_size)) |
| 1823 | |
Antoine Pitrou | 7c40489 | 2011-05-13 00:13:33 +0200 | [diff] [blame] | 1824 | def test_write_rewind_write(self): |
| 1825 | # Various combinations of reading / writing / seeking backwards / writing again |
| 1826 | def mutate(bufio, pos1, pos2): |
| 1827 | assert pos2 >= pos1 |
| 1828 | # Fill the buffer |
| 1829 | bufio.seek(pos1) |
| 1830 | bufio.read(pos2 - pos1) |
| 1831 | bufio.write(b'\x02') |
| 1832 | # This writes earlier than the previous write, but still inside |
| 1833 | # the buffer. |
| 1834 | bufio.seek(pos1) |
| 1835 | bufio.write(b'\x01') |
| 1836 | |
| 1837 | b = b"\x80\x81\x82\x83\x84" |
| 1838 | for i in range(0, len(b)): |
| 1839 | for j in range(i, len(b)): |
| 1840 | raw = self.BytesIO(b) |
| 1841 | bufio = self.tp(raw, 100) |
| 1842 | mutate(bufio, i, j) |
| 1843 | bufio.flush() |
| 1844 | expected = bytearray(b) |
| 1845 | expected[j] = 2 |
| 1846 | expected[i] = 1 |
| 1847 | self.assertEqual(raw.getvalue(), expected, |
| 1848 | "failed result for i=%d, j=%d" % (i, j)) |
| 1849 | |
Antoine Pitrou | 905a2ff | 2010-01-31 22:47:27 +0000 | [diff] [blame] | 1850 | def test_truncate_after_read_or_write(self): |
| 1851 | raw = self.BytesIO(b"A" * 10) |
| 1852 | bufio = self.tp(raw, 100) |
| 1853 | self.assertEqual(bufio.read(2), b"AA") # the read buffer gets filled |
| 1854 | self.assertEqual(bufio.truncate(), 2) |
| 1855 | self.assertEqual(bufio.write(b"BB"), 2) # the write buffer increases |
| 1856 | self.assertEqual(bufio.truncate(), 4) |
| 1857 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1858 | def test_misbehaved_io(self): |
| 1859 | BufferedReaderTest.test_misbehaved_io(self) |
| 1860 | BufferedWriterTest.test_misbehaved_io(self) |
| 1861 | |
Antoine Pitrou | e05565e | 2011-08-20 14:39:23 +0200 | [diff] [blame] | 1862 | def test_interleaved_read_write(self): |
| 1863 | # Test for issue #12213 |
| 1864 | with self.BytesIO(b'abcdefgh') as raw: |
| 1865 | with self.tp(raw, 100) as f: |
| 1866 | f.write(b"1") |
| 1867 | self.assertEqual(f.read(1), b'b') |
| 1868 | f.write(b'2') |
| 1869 | self.assertEqual(f.read1(1), b'd') |
| 1870 | f.write(b'3') |
| 1871 | buf = bytearray(1) |
| 1872 | f.readinto(buf) |
| 1873 | self.assertEqual(buf, b'f') |
| 1874 | f.write(b'4') |
| 1875 | self.assertEqual(f.peek(1), b'h') |
| 1876 | f.flush() |
| 1877 | self.assertEqual(raw.getvalue(), b'1b2d3f4h') |
| 1878 | |
| 1879 | with self.BytesIO(b'abc') as raw: |
| 1880 | with self.tp(raw, 100) as f: |
| 1881 | self.assertEqual(f.read(1), b'a') |
| 1882 | f.write(b"2") |
| 1883 | self.assertEqual(f.read(1), b'c') |
| 1884 | f.flush() |
| 1885 | self.assertEqual(raw.getvalue(), b'a2c') |
| 1886 | |
| 1887 | def test_interleaved_readline_write(self): |
| 1888 | with self.BytesIO(b'ab\ncdef\ng\n') as raw: |
| 1889 | with self.tp(raw) as f: |
| 1890 | f.write(b'1') |
| 1891 | self.assertEqual(f.readline(), b'b\n') |
| 1892 | f.write(b'2') |
| 1893 | self.assertEqual(f.readline(), b'def\n') |
| 1894 | f.write(b'3') |
| 1895 | self.assertEqual(f.readline(), b'\n') |
| 1896 | f.flush() |
| 1897 | self.assertEqual(raw.getvalue(), b'1b\n2def\n3\n') |
| 1898 | |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 1899 | # You can't construct a BufferedRandom over a non-seekable stream. |
| 1900 | test_unseekable = None |
| 1901 | |
R David Murray | 67bfe80 | 2013-02-23 21:51:05 -0500 | [diff] [blame] | 1902 | |
Antoine Pitrou | 10f0c50 | 2012-07-29 19:02:46 +0200 | [diff] [blame] | 1903 | class CBufferedRandomTest(BufferedRandomTest, SizeofTest): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1904 | tp = io.BufferedRandom |
| 1905 | |
| 1906 | def test_constructor(self): |
| 1907 | BufferedRandomTest.test_constructor(self) |
| 1908 | # The allocation can succeed on 32-bit builds, e.g. with more |
| 1909 | # than 2GB RAM and a 64-bit kernel. |
| 1910 | if sys.maxsize > 0x7FFFFFFF: |
| 1911 | rawio = self.MockRawIO() |
| 1912 | bufio = self.tp(rawio) |
| 1913 | self.assertRaises((OverflowError, MemoryError, ValueError), |
| 1914 | bufio.__init__, rawio, sys.maxsize) |
| 1915 | |
| 1916 | def test_garbage_collection(self): |
| 1917 | CBufferedReaderTest.test_garbage_collection(self) |
| 1918 | CBufferedWriterTest.test_garbage_collection(self) |
| 1919 | |
R David Murray | 67bfe80 | 2013-02-23 21:51:05 -0500 | [diff] [blame] | 1920 | def test_args_error(self): |
| 1921 | # Issue #17275 |
| 1922 | with self.assertRaisesRegex(TypeError, "BufferedRandom"): |
| 1923 | self.tp(io.BytesIO(), 1024, 1024, 1024) |
| 1924 | |
| 1925 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 1926 | class PyBufferedRandomTest(BufferedRandomTest): |
| 1927 | tp = pyio.BufferedRandom |
| 1928 | |
| 1929 | |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 1930 | # To fully exercise seek/tell, the StatefulIncrementalDecoder has these |
| 1931 | # properties: |
| 1932 | # - A single output character can correspond to many bytes of input. |
| 1933 | # - The number of input bytes to complete the character can be |
| 1934 | # undetermined until the last input byte is received. |
| 1935 | # - The number of input bytes can vary depending on previous input. |
| 1936 | # - A single input byte can correspond to many characters of output. |
| 1937 | # - The number of output characters can be undetermined until the |
| 1938 | # last input byte is received. |
| 1939 | # - The number of output characters can vary depending on previous input. |
| 1940 | |
| 1941 | class StatefulIncrementalDecoder(codecs.IncrementalDecoder): |
| 1942 | """ |
| 1943 | For testing seek/tell behavior with a stateful, buffering decoder. |
| 1944 | |
| 1945 | Input is a sequence of words. Words may be fixed-length (length set |
| 1946 | by input) or variable-length (period-terminated). In variable-length |
| 1947 | mode, extra periods are ignored. Possible words are: |
| 1948 | - 'i' followed by a number sets the input length, I (maximum 99). |
| 1949 | When I is set to 0, words are space-terminated. |
| 1950 | - 'o' followed by a number sets the output length, O (maximum 99). |
| 1951 | - Any other word is converted into a word followed by a period on |
| 1952 | the output. The output word consists of the input word truncated |
| 1953 | or padded out with hyphens to make its length equal to O. If O |
| 1954 | is 0, the word is output verbatim without truncating or padding. |
| 1955 | I and O are initially set to 1. When I changes, any buffered input is |
| 1956 | re-scanned according to the new I. EOF also terminates the last word. |
| 1957 | """ |
| 1958 | |
| 1959 | def __init__(self, errors='strict'): |
Christian Heimes | ab56887 | 2008-03-23 02:11:13 +0000 | [diff] [blame] | 1960 | codecs.IncrementalDecoder.__init__(self, errors) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 1961 | self.reset() |
| 1962 | |
| 1963 | def __repr__(self): |
| 1964 | return '<SID %x>' % id(self) |
| 1965 | |
| 1966 | def reset(self): |
| 1967 | self.i = 1 |
| 1968 | self.o = 1 |
| 1969 | self.buffer = bytearray() |
| 1970 | |
| 1971 | def getstate(self): |
| 1972 | i, o = self.i ^ 1, self.o ^ 1 # so that flags = 0 after reset() |
| 1973 | return bytes(self.buffer), i*100 + o |
| 1974 | |
| 1975 | def setstate(self, state): |
| 1976 | buffer, io = state |
| 1977 | self.buffer = bytearray(buffer) |
| 1978 | i, o = divmod(io, 100) |
| 1979 | self.i, self.o = i ^ 1, o ^ 1 |
| 1980 | |
| 1981 | def decode(self, input, final=False): |
| 1982 | output = '' |
| 1983 | for b in input: |
| 1984 | if self.i == 0: # variable-length, terminated with period |
| 1985 | if b == ord('.'): |
| 1986 | if self.buffer: |
| 1987 | output += self.process_word() |
| 1988 | else: |
| 1989 | self.buffer.append(b) |
| 1990 | else: # fixed-length, terminate after self.i bytes |
| 1991 | self.buffer.append(b) |
| 1992 | if len(self.buffer) == self.i: |
| 1993 | output += self.process_word() |
| 1994 | if final and self.buffer: # EOF terminates the last word |
| 1995 | output += self.process_word() |
| 1996 | return output |
| 1997 | |
| 1998 | def process_word(self): |
| 1999 | output = '' |
| 2000 | if self.buffer[0] == ord('i'): |
| 2001 | self.i = min(99, int(self.buffer[1:] or 0)) # set input length |
| 2002 | elif self.buffer[0] == ord('o'): |
| 2003 | self.o = min(99, int(self.buffer[1:] or 0)) # set output length |
| 2004 | else: |
| 2005 | output = self.buffer.decode('ascii') |
| 2006 | if len(output) < self.o: |
| 2007 | output += '-'*self.o # pad out with hyphens |
| 2008 | if self.o: |
| 2009 | output = output[:self.o] # truncate to output length |
| 2010 | output += '.' |
| 2011 | self.buffer = bytearray() |
| 2012 | return output |
| 2013 | |
Benjamin Peterson | ad9d48d | 2008-04-02 21:49:44 +0000 | [diff] [blame] | 2014 | codecEnabled = False |
| 2015 | |
| 2016 | @classmethod |
| 2017 | def lookupTestDecoder(cls, name): |
| 2018 | if cls.codecEnabled and name == 'test_decoder': |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2019 | latin1 = codecs.lookup('latin-1') |
Benjamin Peterson | ad9d48d | 2008-04-02 21:49:44 +0000 | [diff] [blame] | 2020 | return codecs.CodecInfo( |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2021 | name='test_decoder', encode=latin1.encode, decode=None, |
Benjamin Peterson | ad9d48d | 2008-04-02 21:49:44 +0000 | [diff] [blame] | 2022 | incrementalencoder=None, |
| 2023 | streamreader=None, streamwriter=None, |
| 2024 | incrementaldecoder=cls) |
| 2025 | |
| 2026 | # Register the previous decoder for testing. |
| 2027 | # Disabled by default, tests will enable it. |
| 2028 | codecs.register(StatefulIncrementalDecoder.lookupTestDecoder) |
| 2029 | |
| 2030 | |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2031 | class StatefulIncrementalDecoderTest(unittest.TestCase): |
| 2032 | """ |
| 2033 | Make sure the StatefulIncrementalDecoder actually works. |
| 2034 | """ |
| 2035 | |
| 2036 | test_cases = [ |
Ka-Ping Yee | d24a5b6 | 2008-03-20 10:51:27 +0000 | [diff] [blame] | 2037 | # I=1, O=1 (fixed-length input == fixed-length output) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2038 | (b'abcd', False, 'a.b.c.d.'), |
Ka-Ping Yee | d24a5b6 | 2008-03-20 10:51:27 +0000 | [diff] [blame] | 2039 | # I=0, O=0 (variable-length input, variable-length output) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2040 | (b'oiabcd', True, 'abcd.'), |
Ka-Ping Yee | d24a5b6 | 2008-03-20 10:51:27 +0000 | [diff] [blame] | 2041 | # I=0, O=0 (should ignore extra periods) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2042 | (b'oi...abcd...', True, 'abcd.'), |
Ka-Ping Yee | d24a5b6 | 2008-03-20 10:51:27 +0000 | [diff] [blame] | 2043 | # I=0, O=6 (variable-length input, fixed-length output) |
| 2044 | (b'i.o6.x.xyz.toolongtofit.', False, 'x-----.xyz---.toolon.'), |
| 2045 | # I=2, O=6 (fixed-length input < fixed-length output) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2046 | (b'i.i2.o6xyz', True, 'xy----.z-----.'), |
Ka-Ping Yee | d24a5b6 | 2008-03-20 10:51:27 +0000 | [diff] [blame] | 2047 | # I=6, O=3 (fixed-length input > fixed-length output) |
| 2048 | (b'i.o3.i6.abcdefghijklmnop', True, 'abc.ghi.mno.'), |
| 2049 | # I=0, then 3; O=29, then 15 (with longer output) |
| 2050 | (b'i.o29.a.b.cde.o15.abcdefghijabcdefghij.i3.a.b.c.d.ei00k.l.m', True, |
| 2051 | 'a----------------------------.' + |
| 2052 | 'b----------------------------.' + |
| 2053 | 'cde--------------------------.' + |
| 2054 | 'abcdefghijabcde.' + |
| 2055 | 'a.b------------.' + |
| 2056 | '.c.------------.' + |
| 2057 | 'd.e------------.' + |
| 2058 | 'k--------------.' + |
| 2059 | 'l--------------.' + |
| 2060 | 'm--------------.') |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2061 | ] |
| 2062 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2063 | def test_decoder(self): |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2064 | # Try a few one-shot test cases. |
| 2065 | for input, eof, output in self.test_cases: |
| 2066 | d = StatefulIncrementalDecoder() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2067 | self.assertEqual(d.decode(input, eof), output) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2068 | |
| 2069 | # Also test an unfinished decode, followed by forcing EOF. |
| 2070 | d = StatefulIncrementalDecoder() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2071 | self.assertEqual(d.decode(b'oiabcd'), '') |
| 2072 | self.assertEqual(d.decode(b'', 1), 'abcd.') |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2073 | |
| 2074 | class TextIOWrapperTest(unittest.TestCase): |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2075 | |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2076 | def setUp(self): |
| 2077 | self.testdata = b"AAA\r\nBBB\rCCC\r\nDDD\nEEE\r\n" |
| 2078 | self.normalized = b"AAA\nBBB\nCCC\nDDD\nEEE\n".decode("ascii") |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 2079 | support.unlink(support.TESTFN) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2080 | |
Guido van Rossum | d071281 | 2007-04-11 16:32:43 +0000 | [diff] [blame] | 2081 | def tearDown(self): |
Benjamin Peterson | ee8712c | 2008-05-20 21:35:26 +0000 | [diff] [blame] | 2082 | support.unlink(support.TESTFN) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2083 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2084 | def test_constructor(self): |
| 2085 | r = self.BytesIO(b"\xc3\xa9\n\n") |
| 2086 | b = self.BufferedReader(r, 1000) |
| 2087 | t = self.TextIOWrapper(b) |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 2088 | t.__init__(b, encoding="latin-1", newline="\r\n") |
| 2089 | self.assertEqual(t.encoding, "latin-1") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2090 | self.assertEqual(t.line_buffering, False) |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 2091 | t.__init__(b, encoding="utf-8", line_buffering=True) |
| 2092 | self.assertEqual(t.encoding, "utf-8") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2093 | self.assertEqual(t.line_buffering, True) |
| 2094 | self.assertEqual("\xe9\n", t.readline()) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2095 | self.assertRaises(TypeError, t.__init__, b, newline=42) |
| 2096 | self.assertRaises(ValueError, t.__init__, b, newline='xyzzy') |
| 2097 | |
Serhiy Storchaka | 6a69466 | 2015-04-16 11:54:14 +0300 | [diff] [blame] | 2098 | def test_uninitialized(self): |
| 2099 | t = self.TextIOWrapper.__new__(self.TextIOWrapper) |
| 2100 | del t |
| 2101 | t = self.TextIOWrapper.__new__(self.TextIOWrapper) |
| 2102 | self.assertRaises(Exception, repr, t) |
| 2103 | self.assertRaisesRegex((ValueError, AttributeError), |
| 2104 | 'uninitialized|has no attribute', |
| 2105 | t.read, 0) |
| 2106 | t.__init__(self.MockRawIO()) |
| 2107 | self.assertEqual(t.read(0), '') |
| 2108 | |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2109 | def test_non_text_encoding_codecs_are_rejected(self): |
| 2110 | # Ensure the constructor complains if passed a codec that isn't |
| 2111 | # marked as a text encoding |
| 2112 | # http://bugs.python.org/issue20404 |
| 2113 | r = self.BytesIO() |
| 2114 | b = self.BufferedWriter(r) |
| 2115 | with self.assertRaisesRegex(LookupError, "is not a text encoding"): |
| 2116 | self.TextIOWrapper(b, encoding="hex") |
| 2117 | |
Benjamin Peterson | d2e0c79 | 2009-05-01 20:40:59 +0000 | [diff] [blame] | 2118 | def test_detach(self): |
| 2119 | r = self.BytesIO() |
| 2120 | b = self.BufferedWriter(r) |
| 2121 | t = self.TextIOWrapper(b) |
| 2122 | self.assertIs(t.detach(), b) |
| 2123 | |
| 2124 | t = self.TextIOWrapper(b, encoding="ascii") |
| 2125 | t.write("howdy") |
| 2126 | self.assertFalse(r.getvalue()) |
| 2127 | t.detach() |
| 2128 | self.assertEqual(r.getvalue(), b"howdy") |
| 2129 | self.assertRaises(ValueError, t.detach) |
| 2130 | |
Benjamin Peterson | 10e76b6 | 2014-12-21 20:51:50 -0600 | [diff] [blame] | 2131 | # Operations independent of the detached stream should still work |
| 2132 | repr(t) |
| 2133 | self.assertEqual(t.encoding, "ascii") |
| 2134 | self.assertEqual(t.errors, "strict") |
| 2135 | self.assertFalse(t.line_buffering) |
| 2136 | |
Benjamin Peterson | c4c0eae | 2009-03-09 00:07:03 +0000 | [diff] [blame] | 2137 | def test_repr(self): |
| 2138 | raw = self.BytesIO("hello".encode("utf-8")) |
| 2139 | b = self.BufferedReader(raw) |
| 2140 | t = self.TextIOWrapper(b, encoding="utf-8") |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 2141 | modname = self.TextIOWrapper.__module__ |
| 2142 | self.assertEqual(repr(t), |
| 2143 | "<%s.TextIOWrapper encoding='utf-8'>" % modname) |
| 2144 | raw.name = "dummy" |
| 2145 | self.assertEqual(repr(t), |
| 2146 | "<%s.TextIOWrapper name='dummy' encoding='utf-8'>" % modname) |
Antoine Pitrou | a4815ca | 2011-01-09 20:38:15 +0000 | [diff] [blame] | 2147 | t.mode = "r" |
| 2148 | self.assertEqual(repr(t), |
| 2149 | "<%s.TextIOWrapper name='dummy' mode='r' encoding='utf-8'>" % modname) |
Antoine Pitrou | 716c444 | 2009-05-23 19:04:03 +0000 | [diff] [blame] | 2150 | raw.name = b"dummy" |
| 2151 | self.assertEqual(repr(t), |
Antoine Pitrou | a4815ca | 2011-01-09 20:38:15 +0000 | [diff] [blame] | 2152 | "<%s.TextIOWrapper name=b'dummy' mode='r' encoding='utf-8'>" % modname) |
Benjamin Peterson | c4c0eae | 2009-03-09 00:07:03 +0000 | [diff] [blame] | 2153 | |
Benjamin Peterson | 10e76b6 | 2014-12-21 20:51:50 -0600 | [diff] [blame] | 2154 | t.buffer.detach() |
| 2155 | repr(t) # Should not raise an exception |
| 2156 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2157 | def test_line_buffering(self): |
| 2158 | r = self.BytesIO() |
| 2159 | b = self.BufferedWriter(r, 1000) |
| 2160 | t = self.TextIOWrapper(b, newline="\n", line_buffering=True) |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2161 | t.write("X") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2162 | self.assertEqual(r.getvalue(), b"") # No flush happened |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2163 | t.write("Y\nZ") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2164 | self.assertEqual(r.getvalue(), b"XY\nZ") # All got flushed |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2165 | t.write("A\rB") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2166 | self.assertEqual(r.getvalue(), b"XY\nZA\rB") |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2167 | |
Victor Stinner | f86a5e8 | 2012-06-05 13:43:22 +0200 | [diff] [blame] | 2168 | def test_default_encoding(self): |
| 2169 | old_environ = dict(os.environ) |
| 2170 | try: |
| 2171 | # try to get a user preferred encoding different than the current |
| 2172 | # locale encoding to check that TextIOWrapper() uses the current |
| 2173 | # locale encoding and not the user preferred encoding |
| 2174 | for key in ('LC_ALL', 'LANG', 'LC_CTYPE'): |
| 2175 | if key in os.environ: |
| 2176 | del os.environ[key] |
| 2177 | |
| 2178 | current_locale_encoding = locale.getpreferredencoding(False) |
| 2179 | b = self.BytesIO() |
| 2180 | t = self.TextIOWrapper(b) |
| 2181 | self.assertEqual(t.encoding, current_locale_encoding) |
| 2182 | finally: |
| 2183 | os.environ.clear() |
| 2184 | os.environ.update(old_environ) |
| 2185 | |
Serhiy Storchaka | 5cfc79d | 2014-02-07 10:06:39 +0200 | [diff] [blame] | 2186 | @support.cpython_only |
Serhiy Storchaka | 7898043 | 2013-01-15 01:12:17 +0200 | [diff] [blame] | 2187 | def test_device_encoding(self): |
Serhiy Storchaka | 5cfc79d | 2014-02-07 10:06:39 +0200 | [diff] [blame] | 2188 | # Issue 15989 |
| 2189 | import _testcapi |
Serhiy Storchaka | 7898043 | 2013-01-15 01:12:17 +0200 | [diff] [blame] | 2190 | b = self.BytesIO() |
| 2191 | b.fileno = lambda: _testcapi.INT_MAX + 1 |
| 2192 | self.assertRaises(OverflowError, self.TextIOWrapper, b) |
| 2193 | b.fileno = lambda: _testcapi.UINT_MAX + 1 |
| 2194 | self.assertRaises(OverflowError, self.TextIOWrapper, b) |
| 2195 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2196 | def test_encoding(self): |
| 2197 | # Check the encoding attribute is always set, and valid |
| 2198 | b = self.BytesIO() |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 2199 | t = self.TextIOWrapper(b, encoding="utf-8") |
| 2200 | self.assertEqual(t.encoding, "utf-8") |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2201 | t = self.TextIOWrapper(b) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 2202 | self.assertTrue(t.encoding is not None) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2203 | codecs.lookup(t.encoding) |
| 2204 | |
| 2205 | def test_encoding_errors_reading(self): |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2206 | # (1) default |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2207 | b = self.BytesIO(b"abc\n\xff\n") |
| 2208 | t = self.TextIOWrapper(b, encoding="ascii") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2209 | self.assertRaises(UnicodeError, t.read) |
| 2210 | # (2) explicit strict |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2211 | b = self.BytesIO(b"abc\n\xff\n") |
| 2212 | t = self.TextIOWrapper(b, encoding="ascii", errors="strict") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2213 | self.assertRaises(UnicodeError, t.read) |
| 2214 | # (3) ignore |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2215 | b = self.BytesIO(b"abc\n\xff\n") |
| 2216 | t = self.TextIOWrapper(b, encoding="ascii", errors="ignore") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2217 | self.assertEqual(t.read(), "abc\n\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2218 | # (4) replace |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2219 | b = self.BytesIO(b"abc\n\xff\n") |
| 2220 | t = self.TextIOWrapper(b, encoding="ascii", errors="replace") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2221 | self.assertEqual(t.read(), "abc\n\ufffd\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2222 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2223 | def test_encoding_errors_writing(self): |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2224 | # (1) default |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2225 | b = self.BytesIO() |
| 2226 | t = self.TextIOWrapper(b, encoding="ascii") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2227 | self.assertRaises(UnicodeError, t.write, "\xff") |
| 2228 | # (2) explicit strict |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2229 | b = self.BytesIO() |
| 2230 | t = self.TextIOWrapper(b, encoding="ascii", errors="strict") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2231 | self.assertRaises(UnicodeError, t.write, "\xff") |
| 2232 | # (3) ignore |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2233 | b = self.BytesIO() |
| 2234 | t = self.TextIOWrapper(b, encoding="ascii", errors="ignore", |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2235 | newline="\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2236 | t.write("abc\xffdef\n") |
| 2237 | t.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2238 | self.assertEqual(b.getvalue(), b"abcdef\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2239 | # (4) replace |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2240 | b = self.BytesIO() |
| 2241 | t = self.TextIOWrapper(b, encoding="ascii", errors="replace", |
Guido van Rossum | f64db9f | 2007-12-06 01:04:26 +0000 | [diff] [blame] | 2242 | newline="\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2243 | t.write("abc\xffdef\n") |
| 2244 | t.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2245 | self.assertEqual(b.getvalue(), b"abc?def\n") |
Guido van Rossum | e7fc50f | 2007-12-03 22:54:21 +0000 | [diff] [blame] | 2246 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2247 | def test_newlines(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2248 | input_lines = [ "unix\n", "windows\r\n", "os9\r", "last\n", "nonl" ] |
| 2249 | |
| 2250 | tests = [ |
| 2251 | [ None, [ 'unix\n', 'windows\n', 'os9\n', 'last\n', 'nonl' ] ], |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2252 | [ '', input_lines ], |
| 2253 | [ '\n', [ "unix\n", "windows\r\n", "os9\rlast\n", "nonl" ] ], |
| 2254 | [ '\r\n', [ "unix\nwindows\r\n", "os9\rlast\nnonl" ] ], |
| 2255 | [ '\r', [ "unix\nwindows\r", "\nos9\r", "last\nnonl" ] ], |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2256 | ] |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2257 | encodings = ( |
| 2258 | 'utf-8', 'latin-1', |
| 2259 | 'utf-16', 'utf-16-le', 'utf-16-be', |
| 2260 | 'utf-32', 'utf-32-le', 'utf-32-be', |
| 2261 | ) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2262 | |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2263 | # Try a range of buffer sizes to test the case where \r is the last |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2264 | # character in TextIOWrapper._pending_line. |
| 2265 | for encoding in encodings: |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2266 | # XXX: str.encode() should return bytes |
| 2267 | data = bytes(''.join(input_lines).encode(encoding)) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2268 | for do_reads in (False, True): |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2269 | for bufsize in range(1, 10): |
| 2270 | for newline, exp_lines in tests: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2271 | bufio = self.BufferedReader(self.BytesIO(data), bufsize) |
| 2272 | textio = self.TextIOWrapper(bufio, newline=newline, |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2273 | encoding=encoding) |
| 2274 | if do_reads: |
| 2275 | got_lines = [] |
| 2276 | while True: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 2277 | c2 = textio.read(2) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2278 | if c2 == '': |
| 2279 | break |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2280 | self.assertEqual(len(c2), 2) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 2281 | got_lines.append(c2 + textio.readline()) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2282 | else: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 2283 | got_lines = list(textio) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2284 | |
| 2285 | for got_line, exp_line in zip(got_lines, exp_lines): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2286 | self.assertEqual(got_line, exp_line) |
| 2287 | self.assertEqual(len(got_lines), len(exp_lines)) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 2288 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2289 | def test_newlines_input(self): |
| 2290 | testdata = b"AAA\nBB\x00B\nCCC\rDDD\rEEE\r\nFFF\r\nGGG" |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2291 | normalized = testdata.replace(b"\r\n", b"\n").replace(b"\r", b"\n") |
| 2292 | for newline, expected in [ |
Ezio Melotti | d8b509b | 2011-09-28 17:37:55 +0300 | [diff] [blame] | 2293 | (None, normalized.decode("ascii").splitlines(keepends=True)), |
| 2294 | ("", testdata.decode("ascii").splitlines(keepends=True)), |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2295 | ("\n", ["AAA\n", "BB\x00B\n", "CCC\rDDD\rEEE\r\n", "FFF\r\n", "GGG"]), |
| 2296 | ("\r\n", ["AAA\nBB\x00B\nCCC\rDDD\rEEE\r\n", "FFF\r\n", "GGG"]), |
| 2297 | ("\r", ["AAA\nBB\x00B\nCCC\r", "DDD\r", "EEE\r", "\nFFF\r", "\nGGG"]), |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2298 | ]: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2299 | buf = self.BytesIO(testdata) |
| 2300 | txt = self.TextIOWrapper(buf, encoding="ascii", newline=newline) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2301 | self.assertEqual(txt.readlines(), expected) |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2302 | txt.seek(0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2303 | self.assertEqual(txt.read(), "".join(expected)) |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2304 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2305 | def test_newlines_output(self): |
| 2306 | testdict = { |
| 2307 | "": b"AAA\nBBB\nCCC\nX\rY\r\nZ", |
| 2308 | "\n": b"AAA\nBBB\nCCC\nX\rY\r\nZ", |
| 2309 | "\r": b"AAA\rBBB\rCCC\rX\rY\r\rZ", |
| 2310 | "\r\n": b"AAA\r\nBBB\r\nCCC\r\nX\rY\r\r\nZ", |
| 2311 | } |
| 2312 | tests = [(None, testdict[os.linesep])] + sorted(testdict.items()) |
| 2313 | for newline, expected in tests: |
| 2314 | buf = self.BytesIO() |
| 2315 | txt = self.TextIOWrapper(buf, encoding="ascii", newline=newline) |
| 2316 | txt.write("AAA\nB") |
| 2317 | txt.write("BB\nCCC\n") |
| 2318 | txt.write("X\rY\r\nZ") |
| 2319 | txt.flush() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2320 | self.assertEqual(buf.closed, False) |
| 2321 | self.assertEqual(buf.getvalue(), expected) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2322 | |
| 2323 | def test_destructor(self): |
| 2324 | l = [] |
| 2325 | base = self.BytesIO |
| 2326 | class MyBytesIO(base): |
| 2327 | def close(self): |
| 2328 | l.append(self.getvalue()) |
| 2329 | base.close(self) |
| 2330 | b = MyBytesIO() |
| 2331 | t = self.TextIOWrapper(b, encoding="ascii") |
| 2332 | t.write("abc") |
| 2333 | del t |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 2334 | support.gc_collect() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2335 | self.assertEqual([b"abc"], l) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2336 | |
| 2337 | def test_override_destructor(self): |
| 2338 | record = [] |
| 2339 | class MyTextIO(self.TextIOWrapper): |
| 2340 | def __del__(self): |
| 2341 | record.append(1) |
| 2342 | try: |
| 2343 | f = super().__del__ |
| 2344 | except AttributeError: |
| 2345 | pass |
| 2346 | else: |
| 2347 | f() |
| 2348 | def close(self): |
| 2349 | record.append(2) |
| 2350 | super().close() |
| 2351 | def flush(self): |
| 2352 | record.append(3) |
| 2353 | super().flush() |
| 2354 | b = self.BytesIO() |
| 2355 | t = MyTextIO(b, encoding="ascii") |
| 2356 | del t |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 2357 | support.gc_collect() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2358 | self.assertEqual(record, [1, 2, 3]) |
| 2359 | |
| 2360 | def test_error_through_destructor(self): |
| 2361 | # Test that the exception state is not modified by a destructor, |
| 2362 | # even if close() fails. |
| 2363 | rawio = self.CloseFailureIO() |
| 2364 | def f(): |
| 2365 | self.TextIOWrapper(rawio).xyzzy |
| 2366 | with support.captured_output("stderr") as s: |
| 2367 | self.assertRaises(AttributeError, f) |
| 2368 | s = s.getvalue().strip() |
| 2369 | if s: |
| 2370 | # The destructor *may* have printed an unraisable error, check it |
| 2371 | self.assertEqual(len(s.splitlines()), 1) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2372 | self.assertTrue(s.startswith("Exception OSError: "), s) |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 2373 | self.assertTrue(s.endswith(" ignored"), s) |
Guido van Rossum | 8358db2 | 2007-08-18 21:39:55 +0000 | [diff] [blame] | 2374 | |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2375 | # Systematic tests of the text I/O API |
| 2376 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2377 | def test_basic_io(self): |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2378 | for chunksize in (1, 2, 3, 4, 5, 15, 16, 17, 31, 32, 33, 63, 64, 65): |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 2379 | for enc in "ascii", "latin-1", "utf-8" :# , "utf-16-be", "utf-16-le": |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2380 | f = self.open(support.TESTFN, "w+", encoding=enc) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2381 | f._CHUNK_SIZE = chunksize |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2382 | self.assertEqual(f.write("abc"), 3) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2383 | f.close() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2384 | f = self.open(support.TESTFN, "r+", encoding=enc) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2385 | f._CHUNK_SIZE = chunksize |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2386 | self.assertEqual(f.tell(), 0) |
| 2387 | self.assertEqual(f.read(), "abc") |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2388 | cookie = f.tell() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2389 | self.assertEqual(f.seek(0), 0) |
| 2390 | self.assertEqual(f.read(None), "abc") |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 2391 | f.seek(0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2392 | self.assertEqual(f.read(2), "ab") |
| 2393 | self.assertEqual(f.read(1), "c") |
| 2394 | self.assertEqual(f.read(1), "") |
| 2395 | self.assertEqual(f.read(), "") |
| 2396 | self.assertEqual(f.tell(), cookie) |
| 2397 | self.assertEqual(f.seek(0), 0) |
| 2398 | self.assertEqual(f.seek(0, 2), cookie) |
| 2399 | self.assertEqual(f.write("def"), 3) |
| 2400 | self.assertEqual(f.seek(cookie), cookie) |
| 2401 | self.assertEqual(f.read(), "def") |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2402 | if enc.startswith("utf"): |
| 2403 | self.multi_line_test(f, enc) |
| 2404 | f.close() |
| 2405 | |
| 2406 | def multi_line_test(self, f, enc): |
| 2407 | f.seek(0) |
| 2408 | f.truncate() |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2409 | sample = "s\xff\u0fff\uffff" |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2410 | wlines = [] |
Guido van Rossum | cba608c | 2007-04-11 14:19:59 +0000 | [diff] [blame] | 2411 | for size in (0, 1, 2, 3, 4, 5, 30, 31, 32, 33, 62, 63, 64, 65, 1000): |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2412 | chars = [] |
Guido van Rossum | 805365e | 2007-05-07 22:24:25 +0000 | [diff] [blame] | 2413 | for i in range(size): |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2414 | chars.append(sample[i % len(sample)]) |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2415 | line = "".join(chars) + "\n" |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2416 | wlines.append((f.tell(), line)) |
| 2417 | f.write(line) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2418 | f.seek(0) |
| 2419 | rlines = [] |
| 2420 | while True: |
| 2421 | pos = f.tell() |
| 2422 | line = f.readline() |
| 2423 | if not line: |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2424 | break |
| 2425 | rlines.append((pos, line)) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2426 | self.assertEqual(rlines, wlines) |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 2427 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2428 | def test_telling(self): |
Marc-André Lemburg | 8f36af7 | 2011-02-25 15:42:01 +0000 | [diff] [blame] | 2429 | f = self.open(support.TESTFN, "w+", encoding="utf-8") |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 2430 | p0 = f.tell() |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2431 | f.write("\xff\n") |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 2432 | p1 = f.tell() |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2433 | f.write("\xff\n") |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 2434 | p2 = f.tell() |
| 2435 | f.seek(0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2436 | self.assertEqual(f.tell(), p0) |
| 2437 | self.assertEqual(f.readline(), "\xff\n") |
| 2438 | self.assertEqual(f.tell(), p1) |
| 2439 | self.assertEqual(f.readline(), "\xff\n") |
| 2440 | self.assertEqual(f.tell(), p2) |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 2441 | f.seek(0) |
| 2442 | for line in f: |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2443 | self.assertEqual(line, "\xff\n") |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2444 | self.assertRaises(OSError, f.tell) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2445 | self.assertEqual(f.tell(), p2) |
Guido van Rossum | b9c4c3e | 2007-04-11 16:07:50 +0000 | [diff] [blame] | 2446 | f.close() |
| 2447 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2448 | def test_seeking(self): |
| 2449 | chunk_size = _default_chunk_size() |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2450 | prefix_size = chunk_size - 2 |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2451 | u_prefix = "a" * prefix_size |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2452 | prefix = bytes(u_prefix.encode("utf-8")) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2453 | self.assertEqual(len(u_prefix), len(prefix)) |
Guido van Rossum | ef87d6e | 2007-05-02 19:09:54 +0000 | [diff] [blame] | 2454 | u_suffix = "\u8888\n" |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2455 | suffix = bytes(u_suffix.encode("utf-8")) |
| 2456 | line = prefix + suffix |
Benjamin Peterson | ebe5d8a | 2010-10-31 01:30:11 +0000 | [diff] [blame] | 2457 | with self.open(support.TESTFN, "wb") as f: |
| 2458 | f.write(line*2) |
| 2459 | with self.open(support.TESTFN, "r", encoding="utf-8") as f: |
| 2460 | s = f.read(prefix_size) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2461 | self.assertEqual(s, str(prefix, "ascii")) |
| 2462 | self.assertEqual(f.tell(), prefix_size) |
| 2463 | self.assertEqual(f.readline(), u_suffix) |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2464 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2465 | def test_seeking_too(self): |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2466 | # Regression test for a specific bug |
| 2467 | data = b'\xe0\xbf\xbf\n' |
Benjamin Peterson | ebe5d8a | 2010-10-31 01:30:11 +0000 | [diff] [blame] | 2468 | with self.open(support.TESTFN, "wb") as f: |
| 2469 | f.write(data) |
| 2470 | with self.open(support.TESTFN, "r", encoding="utf-8") as f: |
| 2471 | f._CHUNK_SIZE # Just test that it exists |
| 2472 | f._CHUNK_SIZE = 2 |
| 2473 | f.readline() |
| 2474 | f.tell() |
Guido van Rossum | d76e779 | 2007-04-17 02:38:04 +0000 | [diff] [blame] | 2475 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2476 | def test_seek_and_tell(self): |
| 2477 | #Test seek/tell using the StatefulIncrementalDecoder. |
| 2478 | # Make test faster by doing smaller seeks |
| 2479 | CHUNK_SIZE = 128 |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2480 | |
Benjamin Peterson | 5fd871d | 2009-03-05 00:49:53 +0000 | [diff] [blame] | 2481 | def test_seek_and_tell_with_data(data, min_pos=0): |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2482 | """Tell/seek to various points within a data stream and ensure |
| 2483 | that the decoded data returned by read() is consistent.""" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2484 | f = self.open(support.TESTFN, 'wb') |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2485 | f.write(data) |
| 2486 | f.close() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2487 | f = self.open(support.TESTFN, encoding='test_decoder') |
| 2488 | f._CHUNK_SIZE = CHUNK_SIZE |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2489 | decoded = f.read() |
| 2490 | f.close() |
| 2491 | |
Neal Norwitz | e2b0705 | 2008-03-18 19:52:05 +0000 | [diff] [blame] | 2492 | for i in range(min_pos, len(decoded) + 1): # seek positions |
| 2493 | for j in [1, 5, len(decoded) - i]: # read lengths |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2494 | f = self.open(support.TESTFN, encoding='test_decoder') |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2495 | self.assertEqual(f.read(i), decoded[:i]) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2496 | cookie = f.tell() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2497 | self.assertEqual(f.read(j), decoded[i:i + j]) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2498 | f.seek(cookie) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2499 | self.assertEqual(f.read(), decoded[i:]) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2500 | f.close() |
| 2501 | |
Benjamin Peterson | ad9d48d | 2008-04-02 21:49:44 +0000 | [diff] [blame] | 2502 | # Enable the test decoder. |
| 2503 | StatefulIncrementalDecoder.codecEnabled = 1 |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2504 | |
| 2505 | # Run the tests. |
| 2506 | try: |
| 2507 | # Try each test case. |
| 2508 | for input, _, _ in StatefulIncrementalDecoderTest.test_cases: |
Benjamin Peterson | 5fd871d | 2009-03-05 00:49:53 +0000 | [diff] [blame] | 2509 | test_seek_and_tell_with_data(input) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2510 | |
| 2511 | # Position each test case so that it crosses a chunk boundary. |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2512 | for input, _, _ in StatefulIncrementalDecoderTest.test_cases: |
| 2513 | offset = CHUNK_SIZE - len(input)//2 |
| 2514 | prefix = b'.'*offset |
| 2515 | # Don't bother seeking into the prefix (takes too long). |
| 2516 | min_pos = offset*2 |
Benjamin Peterson | 5fd871d | 2009-03-05 00:49:53 +0000 | [diff] [blame] | 2517 | test_seek_and_tell_with_data(prefix + input, min_pos) |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2518 | |
| 2519 | # Ensure our test decoder won't interfere with subsequent tests. |
| 2520 | finally: |
Benjamin Peterson | ad9d48d | 2008-04-02 21:49:44 +0000 | [diff] [blame] | 2521 | StatefulIncrementalDecoder.codecEnabled = 0 |
Ka-Ping Yee | f44c7e8 | 2008-03-18 04:51:32 +0000 | [diff] [blame] | 2522 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2523 | def test_encoded_writes(self): |
Alexandre Vassalotti | a38f73b | 2008-01-07 18:30:48 +0000 | [diff] [blame] | 2524 | data = "1234567890" |
| 2525 | tests = ("utf-16", |
| 2526 | "utf-16-le", |
| 2527 | "utf-16-be", |
| 2528 | "utf-32", |
| 2529 | "utf-32-le", |
| 2530 | "utf-32-be") |
| 2531 | for encoding in tests: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2532 | buf = self.BytesIO() |
| 2533 | f = self.TextIOWrapper(buf, encoding=encoding) |
Alexandre Vassalotti | a38f73b | 2008-01-07 18:30:48 +0000 | [diff] [blame] | 2534 | # Check if the BOM is written only once (see issue1753). |
| 2535 | f.write(data) |
| 2536 | f.write(data) |
| 2537 | f.seek(0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2538 | self.assertEqual(f.read(), data * 2) |
Benjamin Peterson | 9363a65 | 2009-03-05 00:42:09 +0000 | [diff] [blame] | 2539 | f.seek(0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2540 | self.assertEqual(f.read(), data * 2) |
| 2541 | self.assertEqual(buf.getvalue(), (data * 2).encode(encoding)) |
Alexandre Vassalotti | a38f73b | 2008-01-07 18:30:48 +0000 | [diff] [blame] | 2542 | |
Benjamin Peterson | a1b4901 | 2009-03-31 23:11:32 +0000 | [diff] [blame] | 2543 | def test_unreadable(self): |
| 2544 | class UnReadable(self.BytesIO): |
| 2545 | def readable(self): |
| 2546 | return False |
| 2547 | txt = self.TextIOWrapper(UnReadable()) |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2548 | self.assertRaises(OSError, txt.read) |
Benjamin Peterson | a1b4901 | 2009-03-31 23:11:32 +0000 | [diff] [blame] | 2549 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2550 | def test_read_one_by_one(self): |
| 2551 | txt = self.TextIOWrapper(self.BytesIO(b"AA\r\nBB")) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2552 | reads = "" |
| 2553 | while True: |
| 2554 | c = txt.read(1) |
| 2555 | if not c: |
| 2556 | break |
| 2557 | reads += c |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2558 | self.assertEqual(reads, "AA\nBB") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2559 | |
Benjamin Peterson | bf5ff76 | 2009-12-13 19:25:34 +0000 | [diff] [blame] | 2560 | def test_readlines(self): |
| 2561 | txt = self.TextIOWrapper(self.BytesIO(b"AA\nBB\nCC")) |
| 2562 | self.assertEqual(txt.readlines(), ["AA\n", "BB\n", "CC"]) |
| 2563 | txt.seek(0) |
| 2564 | self.assertEqual(txt.readlines(None), ["AA\n", "BB\n", "CC"]) |
| 2565 | txt.seek(0) |
| 2566 | self.assertEqual(txt.readlines(5), ["AA\n", "BB\n"]) |
| 2567 | |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2568 | # read in amounts equal to TextIOWrapper._CHUNK_SIZE which is 128. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2569 | def test_read_by_chunk(self): |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2570 | # make sure "\r\n" straddles 128 char boundary. |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2571 | txt = self.TextIOWrapper(self.BytesIO(b"A" * 127 + b"\r\nB")) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2572 | reads = "" |
| 2573 | while True: |
| 2574 | c = txt.read(128) |
| 2575 | if not c: |
| 2576 | break |
| 2577 | reads += c |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2578 | self.assertEqual(reads, "A"*127+"\nB") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2579 | |
Antoine Pitrou | 3ed2cb5 | 2012-10-16 23:02:27 +0200 | [diff] [blame] | 2580 | def test_writelines(self): |
| 2581 | l = ['ab', 'cd', 'ef'] |
| 2582 | buf = self.BytesIO() |
| 2583 | txt = self.TextIOWrapper(buf) |
| 2584 | txt.writelines(l) |
| 2585 | txt.flush() |
| 2586 | self.assertEqual(buf.getvalue(), b'abcdef') |
| 2587 | |
| 2588 | def test_writelines_userlist(self): |
| 2589 | l = UserList(['ab', 'cd', 'ef']) |
| 2590 | buf = self.BytesIO() |
| 2591 | txt = self.TextIOWrapper(buf) |
| 2592 | txt.writelines(l) |
| 2593 | txt.flush() |
| 2594 | self.assertEqual(buf.getvalue(), b'abcdef') |
| 2595 | |
| 2596 | def test_writelines_error(self): |
| 2597 | txt = self.TextIOWrapper(self.BytesIO()) |
| 2598 | self.assertRaises(TypeError, txt.writelines, [1, 2, 3]) |
| 2599 | self.assertRaises(TypeError, txt.writelines, None) |
| 2600 | self.assertRaises(TypeError, txt.writelines, b'abc') |
| 2601 | |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2602 | def test_issue1395_1(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2603 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2604 | |
| 2605 | # read one char at a time |
| 2606 | reads = "" |
| 2607 | while True: |
| 2608 | c = txt.read(1) |
| 2609 | if not c: |
| 2610 | break |
| 2611 | reads += c |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2612 | self.assertEqual(reads, self.normalized) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2613 | |
| 2614 | def test_issue1395_2(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2615 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2616 | txt._CHUNK_SIZE = 4 |
| 2617 | |
| 2618 | reads = "" |
| 2619 | while True: |
| 2620 | c = txt.read(4) |
| 2621 | if not c: |
| 2622 | break |
| 2623 | reads += c |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2624 | self.assertEqual(reads, self.normalized) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2625 | |
| 2626 | def test_issue1395_3(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2627 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2628 | txt._CHUNK_SIZE = 4 |
| 2629 | |
| 2630 | reads = txt.read(4) |
| 2631 | reads += txt.read(4) |
| 2632 | reads += txt.readline() |
| 2633 | reads += txt.readline() |
| 2634 | reads += txt.readline() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2635 | self.assertEqual(reads, self.normalized) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2636 | |
| 2637 | def test_issue1395_4(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2638 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2639 | txt._CHUNK_SIZE = 4 |
| 2640 | |
| 2641 | reads = txt.read(4) |
| 2642 | reads += txt.read() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2643 | self.assertEqual(reads, self.normalized) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2644 | |
| 2645 | def test_issue1395_5(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2646 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2647 | txt._CHUNK_SIZE = 4 |
| 2648 | |
| 2649 | reads = txt.read(4) |
| 2650 | pos = txt.tell() |
| 2651 | txt.seek(0) |
| 2652 | txt.seek(pos) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2653 | self.assertEqual(txt.read(4), "BBB\n") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2654 | |
Ka-Ping Yee | ddaa706 | 2008-03-17 20:35:15 +0000 | [diff] [blame] | 2655 | def test_issue2282(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2656 | buffer = self.BytesIO(self.testdata) |
| 2657 | txt = self.TextIOWrapper(buffer, encoding="ascii") |
Ka-Ping Yee | ddaa706 | 2008-03-17 20:35:15 +0000 | [diff] [blame] | 2658 | |
| 2659 | self.assertEqual(buffer.seekable(), txt.seekable()) |
| 2660 | |
Antoine Pitrou | e450185 | 2009-05-14 18:55:55 +0000 | [diff] [blame] | 2661 | def test_append_bom(self): |
| 2662 | # The BOM is not written again when appending to a non-empty file |
| 2663 | filename = support.TESTFN |
| 2664 | for charset in ('utf-8-sig', 'utf-16', 'utf-32'): |
| 2665 | with self.open(filename, 'w', encoding=charset) as f: |
| 2666 | f.write('aaa') |
| 2667 | pos = f.tell() |
| 2668 | with self.open(filename, 'rb') as f: |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2669 | self.assertEqual(f.read(), 'aaa'.encode(charset)) |
Antoine Pitrou | e450185 | 2009-05-14 18:55:55 +0000 | [diff] [blame] | 2670 | |
| 2671 | with self.open(filename, 'a', encoding=charset) as f: |
| 2672 | f.write('xxx') |
| 2673 | with self.open(filename, 'rb') as f: |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2674 | self.assertEqual(f.read(), 'aaaxxx'.encode(charset)) |
Antoine Pitrou | e450185 | 2009-05-14 18:55:55 +0000 | [diff] [blame] | 2675 | |
| 2676 | def test_seek_bom(self): |
| 2677 | # Same test, but when seeking manually |
| 2678 | filename = support.TESTFN |
| 2679 | for charset in ('utf-8-sig', 'utf-16', 'utf-32'): |
| 2680 | with self.open(filename, 'w', encoding=charset) as f: |
| 2681 | f.write('aaa') |
| 2682 | pos = f.tell() |
| 2683 | with self.open(filename, 'r+', encoding=charset) as f: |
| 2684 | f.seek(pos) |
| 2685 | f.write('zzz') |
| 2686 | f.seek(0) |
| 2687 | f.write('bbb') |
| 2688 | with self.open(filename, 'rb') as f: |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2689 | self.assertEqual(f.read(), 'bbbzzz'.encode(charset)) |
Antoine Pitrou | e450185 | 2009-05-14 18:55:55 +0000 | [diff] [blame] | 2690 | |
Antoine Pitrou | 85e3ee7 | 2015-04-13 20:01:21 +0200 | [diff] [blame] | 2691 | def test_seek_append_bom(self): |
| 2692 | # Same test, but first seek to the start and then to the end |
| 2693 | filename = support.TESTFN |
| 2694 | for charset in ('utf-8-sig', 'utf-16', 'utf-32'): |
| 2695 | with self.open(filename, 'w', encoding=charset) as f: |
| 2696 | f.write('aaa') |
| 2697 | with self.open(filename, 'a', encoding=charset) as f: |
| 2698 | f.seek(0) |
| 2699 | f.seek(0, self.SEEK_END) |
| 2700 | f.write('xxx') |
| 2701 | with self.open(filename, 'rb') as f: |
| 2702 | self.assertEqual(f.read(), 'aaaxxx'.encode(charset)) |
| 2703 | |
Benjamin Peterson | 0926ad1 | 2009-06-06 18:02:12 +0000 | [diff] [blame] | 2704 | def test_errors_property(self): |
| 2705 | with self.open(support.TESTFN, "w") as f: |
| 2706 | self.assertEqual(f.errors, "strict") |
| 2707 | with self.open(support.TESTFN, "w", errors="replace") as f: |
| 2708 | self.assertEqual(f.errors, "replace") |
| 2709 | |
Brett Cannon | 31f5929 | 2011-02-21 19:29:56 +0000 | [diff] [blame] | 2710 | @support.no_tracing |
Victor Stinner | 45df820 | 2010-04-28 22:31:17 +0000 | [diff] [blame] | 2711 | @unittest.skipUnless(threading, 'Threading required for this test.') |
Amaury Forgeot d'Arc | ccd686a | 2009-08-29 23:00:38 +0000 | [diff] [blame] | 2712 | def test_threads_write(self): |
| 2713 | # Issue6750: concurrent writes could duplicate data |
| 2714 | event = threading.Event() |
| 2715 | with self.open(support.TESTFN, "w", buffering=1) as f: |
| 2716 | def run(n): |
| 2717 | text = "Thread%03d\n" % n |
| 2718 | event.wait() |
| 2719 | f.write(text) |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 2720 | threads = [threading.Thread(target=run, args=(x,)) |
Amaury Forgeot d'Arc | ccd686a | 2009-08-29 23:00:38 +0000 | [diff] [blame] | 2721 | for x in range(20)] |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 2722 | with support.start_threads(threads, event.set): |
| 2723 | time.sleep(0.02) |
Amaury Forgeot d'Arc | ccd686a | 2009-08-29 23:00:38 +0000 | [diff] [blame] | 2724 | with self.open(support.TESTFN) as f: |
| 2725 | content = f.read() |
| 2726 | for n in range(20): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2727 | self.assertEqual(content.count("Thread%03d\n" % n), 1) |
Amaury Forgeot d'Arc | ccd686a | 2009-08-29 23:00:38 +0000 | [diff] [blame] | 2728 | |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2729 | def test_flush_error_on_close(self): |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 2730 | # Test that text file is closed despite failed flush |
| 2731 | # and that flush() is called before file closed. |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2732 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 2733 | closed = [] |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2734 | def bad_flush(): |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 2735 | closed[:] = [txt.closed, txt.buffer.closed] |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2736 | raise OSError() |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2737 | txt.flush = bad_flush |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 2738 | self.assertRaises(OSError, txt.close) # exception not swallowed |
Benjamin Peterson | 6862361 | 2012-12-20 11:53:11 -0600 | [diff] [blame] | 2739 | self.assertTrue(txt.closed) |
Serhiy Storchaka | a3712a9 | 2015-02-21 00:35:09 +0200 | [diff] [blame] | 2740 | self.assertTrue(txt.buffer.closed) |
| 2741 | self.assertTrue(closed) # flush() called |
| 2742 | self.assertFalse(closed[0]) # flush() called before file closed |
| 2743 | self.assertFalse(closed[1]) |
Serhiy Storchaka | c26a1a4 | 2015-02-23 00:28:38 +0200 | [diff] [blame] | 2744 | txt.flush = lambda: None # break reference loop |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2745 | |
Serhiy Storchaka | 8a8f7f9 | 2014-06-09 09:13:04 +0300 | [diff] [blame] | 2746 | def test_close_error_on_close(self): |
| 2747 | buffer = self.BytesIO(self.testdata) |
| 2748 | def bad_flush(): |
| 2749 | raise OSError('flush') |
| 2750 | def bad_close(): |
| 2751 | raise OSError('close') |
| 2752 | buffer.close = bad_close |
| 2753 | txt = self.TextIOWrapper(buffer, encoding="ascii") |
| 2754 | txt.flush = bad_flush |
| 2755 | with self.assertRaises(OSError) as err: # exception not swallowed |
| 2756 | txt.close() |
| 2757 | self.assertEqual(err.exception.args, ('close',)) |
| 2758 | self.assertIsInstance(err.exception.__context__, OSError) |
| 2759 | self.assertEqual(err.exception.__context__.args, ('flush',)) |
| 2760 | self.assertFalse(txt.closed) |
| 2761 | |
| 2762 | def test_nonnormalized_close_error_on_close(self): |
| 2763 | # Issue #21677 |
| 2764 | buffer = self.BytesIO(self.testdata) |
| 2765 | def bad_flush(): |
| 2766 | raise non_existing_flush |
| 2767 | def bad_close(): |
| 2768 | raise non_existing_close |
| 2769 | buffer.close = bad_close |
| 2770 | txt = self.TextIOWrapper(buffer, encoding="ascii") |
| 2771 | txt.flush = bad_flush |
| 2772 | with self.assertRaises(NameError) as err: # exception not swallowed |
| 2773 | txt.close() |
| 2774 | self.assertIn('non_existing_close', str(err.exception)) |
| 2775 | self.assertIsInstance(err.exception.__context__, NameError) |
| 2776 | self.assertIn('non_existing_flush', str(err.exception.__context__)) |
| 2777 | self.assertFalse(txt.closed) |
| 2778 | |
Antoine Pitrou | 6be8876 | 2010-05-03 16:48:20 +0000 | [diff] [blame] | 2779 | def test_multi_close(self): |
| 2780 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
| 2781 | txt.close() |
| 2782 | txt.close() |
| 2783 | txt.close() |
| 2784 | self.assertRaises(ValueError, txt.flush) |
| 2785 | |
Antoine Pitrou | 0d739d7 | 2010-09-05 23:01:12 +0000 | [diff] [blame] | 2786 | def test_unseekable(self): |
| 2787 | txt = self.TextIOWrapper(self.MockUnseekableIO(self.testdata)) |
| 2788 | self.assertRaises(self.UnsupportedOperation, txt.tell) |
| 2789 | self.assertRaises(self.UnsupportedOperation, txt.seek, 0) |
| 2790 | |
Antoine Pitrou | 7f8f418 | 2010-12-21 21:20:59 +0000 | [diff] [blame] | 2791 | def test_readonly_attributes(self): |
| 2792 | txt = self.TextIOWrapper(self.BytesIO(self.testdata), encoding="ascii") |
| 2793 | buf = self.BytesIO(self.testdata) |
| 2794 | with self.assertRaises(AttributeError): |
| 2795 | txt.buffer = buf |
| 2796 | |
Antoine Pitrou | e96ec68 | 2011-07-23 21:46:35 +0200 | [diff] [blame] | 2797 | def test_rawio(self): |
| 2798 | # Issue #12591: TextIOWrapper must work with raw I/O objects, so |
| 2799 | # that subprocess.Popen() can have the required unbuffered |
| 2800 | # semantics with universal_newlines=True. |
| 2801 | raw = self.MockRawIO([b'abc', b'def', b'ghi\njkl\nopq\n']) |
| 2802 | txt = self.TextIOWrapper(raw, encoding='ascii', newline='\n') |
| 2803 | # Reads |
| 2804 | self.assertEqual(txt.read(4), 'abcd') |
| 2805 | self.assertEqual(txt.readline(), 'efghi\n') |
| 2806 | self.assertEqual(list(txt), ['jkl\n', 'opq\n']) |
| 2807 | |
| 2808 | def test_rawio_write_through(self): |
| 2809 | # Issue #12591: with write_through=True, writes don't need a flush |
| 2810 | raw = self.MockRawIO([b'abc', b'def', b'ghi\njkl\nopq\n']) |
| 2811 | txt = self.TextIOWrapper(raw, encoding='ascii', newline='\n', |
| 2812 | write_through=True) |
| 2813 | txt.write('1') |
| 2814 | txt.write('23\n4') |
| 2815 | txt.write('5') |
| 2816 | self.assertEqual(b''.join(raw._write_stack), b'123\n45') |
| 2817 | |
Antoine Pitrou | c644e7c | 2014-05-09 00:24:50 +0200 | [diff] [blame] | 2818 | def test_bufio_write_through(self): |
| 2819 | # Issue #21396: write_through=True doesn't force a flush() |
| 2820 | # on the underlying binary buffered object. |
| 2821 | flush_called, write_called = [], [] |
| 2822 | class BufferedWriter(self.BufferedWriter): |
| 2823 | def flush(self, *args, **kwargs): |
| 2824 | flush_called.append(True) |
| 2825 | return super().flush(*args, **kwargs) |
| 2826 | def write(self, *args, **kwargs): |
| 2827 | write_called.append(True) |
| 2828 | return super().write(*args, **kwargs) |
| 2829 | |
| 2830 | rawio = self.BytesIO() |
| 2831 | data = b"a" |
| 2832 | bufio = BufferedWriter(rawio, len(data)*2) |
| 2833 | textio = self.TextIOWrapper(bufio, encoding='ascii', |
| 2834 | write_through=True) |
| 2835 | # write to the buffered io but don't overflow the buffer |
| 2836 | text = data.decode('ascii') |
| 2837 | textio.write(text) |
| 2838 | |
| 2839 | # buffer.flush is not called with write_through=True |
| 2840 | self.assertFalse(flush_called) |
| 2841 | # buffer.write *is* called with write_through=True |
| 2842 | self.assertTrue(write_called) |
| 2843 | self.assertEqual(rawio.getvalue(), b"") # no flush |
| 2844 | |
| 2845 | write_called = [] # reset |
| 2846 | textio.write(text * 10) # total content is larger than bufio buffer |
| 2847 | self.assertTrue(write_called) |
| 2848 | self.assertEqual(rawio.getvalue(), data * 11) # all flushed |
| 2849 | |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2850 | def test_read_nonbytes(self): |
| 2851 | # Issue #17106 |
| 2852 | # Crash when underlying read() returns non-bytes |
| 2853 | t = self.TextIOWrapper(self.StringIO('a')) |
| 2854 | self.assertRaises(TypeError, t.read, 1) |
| 2855 | t = self.TextIOWrapper(self.StringIO('a')) |
| 2856 | self.assertRaises(TypeError, t.readline) |
| 2857 | t = self.TextIOWrapper(self.StringIO('a')) |
| 2858 | self.assertRaises(TypeError, t.read) |
| 2859 | |
| 2860 | def test_illegal_decoder(self): |
| 2861 | # Issue #17106 |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2862 | # Bypass the early encoding check added in issue 20404 |
| 2863 | def _make_illegal_wrapper(): |
| 2864 | quopri = codecs.lookup("quopri") |
| 2865 | quopri._is_text_encoding = True |
| 2866 | try: |
| 2867 | t = self.TextIOWrapper(self.BytesIO(b'aaaaaa'), |
| 2868 | newline='\n', encoding="quopri") |
| 2869 | finally: |
| 2870 | quopri._is_text_encoding = False |
| 2871 | return t |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2872 | # Crash when decoder returns non-string |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2873 | t = _make_illegal_wrapper() |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2874 | self.assertRaises(TypeError, t.read, 1) |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2875 | t = _make_illegal_wrapper() |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2876 | self.assertRaises(TypeError, t.readline) |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2877 | t = _make_illegal_wrapper() |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2878 | self.assertRaises(TypeError, t.read) |
| 2879 | |
Antoine Pitrou | 712cb73 | 2013-12-21 15:51:54 +0100 | [diff] [blame] | 2880 | def _check_create_at_shutdown(self, **kwargs): |
| 2881 | # Issue #20037: creating a TextIOWrapper at shutdown |
| 2882 | # shouldn't crash the interpreter. |
| 2883 | iomod = self.io.__name__ |
| 2884 | code = """if 1: |
| 2885 | import codecs |
| 2886 | import {iomod} as io |
| 2887 | |
| 2888 | # Avoid looking up codecs at shutdown |
| 2889 | codecs.lookup('utf-8') |
| 2890 | |
| 2891 | class C: |
| 2892 | def __init__(self): |
| 2893 | self.buf = io.BytesIO() |
| 2894 | def __del__(self): |
| 2895 | io.TextIOWrapper(self.buf, **{kwargs}) |
| 2896 | print("ok") |
| 2897 | c = C() |
| 2898 | """.format(iomod=iomod, kwargs=kwargs) |
| 2899 | return assert_python_ok("-c", code) |
| 2900 | |
| 2901 | def test_create_at_shutdown_without_encoding(self): |
| 2902 | rc, out, err = self._check_create_at_shutdown() |
| 2903 | if err: |
| 2904 | # Can error out with a RuntimeError if the module state |
| 2905 | # isn't found. |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2906 | self.assertIn(self.shutdown_error, err.decode()) |
Antoine Pitrou | 712cb73 | 2013-12-21 15:51:54 +0100 | [diff] [blame] | 2907 | else: |
| 2908 | self.assertEqual("ok", out.decode().strip()) |
| 2909 | |
| 2910 | def test_create_at_shutdown_with_encoding(self): |
| 2911 | rc, out, err = self._check_create_at_shutdown(encoding='utf-8', |
| 2912 | errors='strict') |
| 2913 | self.assertFalse(err) |
| 2914 | self.assertEqual("ok", out.decode().strip()) |
| 2915 | |
Benjamin Peterson | 6c14f23 | 2014-11-12 10:19:46 -0500 | [diff] [blame] | 2916 | def test_issue22849(self): |
| 2917 | class F(object): |
| 2918 | def readable(self): return True |
| 2919 | def writable(self): return True |
| 2920 | def seekable(self): return True |
| 2921 | |
| 2922 | for i in range(10): |
| 2923 | try: |
| 2924 | self.TextIOWrapper(F(), encoding='utf-8') |
| 2925 | except Exception: |
| 2926 | pass |
| 2927 | |
| 2928 | F.tell = lambda x: 0 |
| 2929 | t = self.TextIOWrapper(F(), encoding='utf-8') |
| 2930 | |
Serhiy Storchaka | 94dc673 | 2013-02-03 17:03:31 +0200 | [diff] [blame] | 2931 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2932 | class CTextIOWrapperTest(TextIOWrapperTest): |
Antoine Pitrou | 712cb73 | 2013-12-21 15:51:54 +0100 | [diff] [blame] | 2933 | io = io |
Nick Coghlan | a9b1524 | 2014-02-04 22:11:18 +1000 | [diff] [blame] | 2934 | shutdown_error = "RuntimeError: could not find io module state" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2935 | |
| 2936 | def test_initialization(self): |
| 2937 | r = self.BytesIO(b"\xc3\xa9\n\n") |
| 2938 | b = self.BufferedReader(r, 1000) |
| 2939 | t = self.TextIOWrapper(b) |
| 2940 | self.assertRaises(TypeError, t.__init__, b, newline=42) |
| 2941 | self.assertRaises(ValueError, t.read) |
| 2942 | self.assertRaises(ValueError, t.__init__, b, newline='xyzzy') |
| 2943 | self.assertRaises(ValueError, t.read) |
| 2944 | |
Benjamin Peterson | 10e76b6 | 2014-12-21 20:51:50 -0600 | [diff] [blame] | 2945 | t = self.TextIOWrapper.__new__(self.TextIOWrapper) |
| 2946 | self.assertRaises(Exception, repr, t) |
| 2947 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2948 | def test_garbage_collection(self): |
| 2949 | # C TextIOWrapper objects are collected, and collecting them flushes |
| 2950 | # all data to disk. |
| 2951 | # The Python version has __del__, so it ends in gc.garbage instead. |
Antoine Pitrou | 796564c | 2013-07-30 19:59:21 +0200 | [diff] [blame] | 2952 | with support.check_warnings(('', ResourceWarning)): |
| 2953 | rawio = io.FileIO(support.TESTFN, "wb") |
| 2954 | b = self.BufferedWriter(rawio) |
| 2955 | t = self.TextIOWrapper(b, encoding="ascii") |
| 2956 | t.write("456def") |
| 2957 | t.x = t |
| 2958 | wr = weakref.ref(t) |
| 2959 | del t |
| 2960 | support.gc_collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 2961 | self.assertTrue(wr() is None, wr) |
Hirokazu Yamamoto | c7d6aa4 | 2009-06-18 00:07:14 +0000 | [diff] [blame] | 2962 | with self.open(support.TESTFN, "rb") as f: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2963 | self.assertEqual(f.read(), b"456def") |
| 2964 | |
Charles-François Natali | 42c28cd | 2011-10-05 19:53:43 +0200 | [diff] [blame] | 2965 | def test_rwpair_cleared_before_textio(self): |
| 2966 | # Issue 13070: TextIOWrapper's finalization would crash when called |
| 2967 | # after the reference to the underlying BufferedRWPair's writer got |
| 2968 | # cleared by the GC. |
| 2969 | for i in range(1000): |
| 2970 | b1 = self.BufferedRWPair(self.MockRawIO(), self.MockRawIO()) |
| 2971 | t1 = self.TextIOWrapper(b1, encoding="ascii") |
| 2972 | b2 = self.BufferedRWPair(self.MockRawIO(), self.MockRawIO()) |
| 2973 | t2 = self.TextIOWrapper(b2, encoding="ascii") |
| 2974 | # circular references |
| 2975 | t1.buddy = t2 |
| 2976 | t2.buddy = t1 |
| 2977 | support.gc_collect() |
| 2978 | |
| 2979 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2980 | class PyTextIOWrapperTest(TextIOWrapperTest): |
Antoine Pitrou | 712cb73 | 2013-12-21 15:51:54 +0100 | [diff] [blame] | 2981 | io = pyio |
Serhiy Storchaka | d667d72 | 2014-02-10 19:09:19 +0200 | [diff] [blame] | 2982 | #shutdown_error = "LookupError: unknown encoding: ascii" |
| 2983 | shutdown_error = "TypeError: 'NoneType' object is not iterable" |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 2984 | |
| 2985 | |
| 2986 | class IncrementalNewlineDecoderTest(unittest.TestCase): |
| 2987 | |
| 2988 | def check_newline_decoding_utf8(self, decoder): |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2989 | # UTF-8 specific tests for a newline decoder |
| 2990 | def _check_decode(b, s, **kwargs): |
| 2991 | # We exercise getstate() / setstate() as well as decode() |
| 2992 | state = decoder.getstate() |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2993 | self.assertEqual(decoder.decode(b, **kwargs), s) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2994 | decoder.setstate(state) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 2995 | self.assertEqual(decoder.decode(b, **kwargs), s) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2996 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2997 | _check_decode(b'\xe8\xa2\x88', "\u8888") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 2998 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 2999 | _check_decode(b'\xe8', "") |
| 3000 | _check_decode(b'\xa2', "") |
| 3001 | _check_decode(b'\x88', "\u8888") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 3002 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3003 | _check_decode(b'\xe8', "") |
| 3004 | _check_decode(b'\xa2', "") |
| 3005 | _check_decode(b'\x88', "\u8888") |
| 3006 | |
| 3007 | _check_decode(b'\xe8', "") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 3008 | self.assertRaises(UnicodeDecodeError, decoder.decode, b'', final=True) |
| 3009 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3010 | decoder.reset() |
| 3011 | _check_decode(b'\n', "\n") |
| 3012 | _check_decode(b'\r', "") |
| 3013 | _check_decode(b'', "\n", final=True) |
| 3014 | _check_decode(b'\r', "\n", final=True) |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 3015 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3016 | _check_decode(b'\r', "") |
| 3017 | _check_decode(b'a', "\na") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 3018 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3019 | _check_decode(b'\r\r\n', "\n\n") |
| 3020 | _check_decode(b'\r', "") |
| 3021 | _check_decode(b'\r', "\n") |
| 3022 | _check_decode(b'\na', "\na") |
Amaury Forgeot d'Arc | 1ff9910 | 2007-11-19 20:34:10 +0000 | [diff] [blame] | 3023 | |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3024 | _check_decode(b'\xe8\xa2\x88\r\n', "\u8888\n") |
| 3025 | _check_decode(b'\xe8\xa2\x88', "\u8888") |
| 3026 | _check_decode(b'\n', "\n") |
| 3027 | _check_decode(b'\xe8\xa2\x88\r', "\u8888") |
| 3028 | _check_decode(b'\n', "\n") |
Guido van Rossum | 9b76da6 | 2007-04-11 01:09:03 +0000 | [diff] [blame] | 3029 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3030 | def check_newline_decoding(self, decoder, encoding): |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3031 | result = [] |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3032 | if encoding is not None: |
| 3033 | encoder = codecs.getincrementalencoder(encoding)() |
| 3034 | def _decode_bytewise(s): |
| 3035 | # Decode one byte at a time |
| 3036 | for b in encoder.encode(s): |
| 3037 | result.append(decoder.decode(bytes([b]))) |
| 3038 | else: |
| 3039 | encoder = None |
| 3040 | def _decode_bytewise(s): |
| 3041 | # Decode one char at a time |
| 3042 | for c in s: |
| 3043 | result.append(decoder.decode(c)) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3044 | self.assertEqual(decoder.newlines, None) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3045 | _decode_bytewise("abc\n\r") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3046 | self.assertEqual(decoder.newlines, '\n') |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3047 | _decode_bytewise("\nabc") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3048 | self.assertEqual(decoder.newlines, ('\n', '\r\n')) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3049 | _decode_bytewise("abc\r") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3050 | self.assertEqual(decoder.newlines, ('\n', '\r\n')) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3051 | _decode_bytewise("abc") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3052 | self.assertEqual(decoder.newlines, ('\r', '\n', '\r\n')) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3053 | _decode_bytewise("abc\r") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3054 | self.assertEqual("".join(result), "abc\n\nabcabc\nabcabc") |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3055 | decoder.reset() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3056 | input = "abc" |
| 3057 | if encoder is not None: |
| 3058 | encoder.reset() |
| 3059 | input = encoder.encode(input) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3060 | self.assertEqual(decoder.decode(input), "abc") |
| 3061 | self.assertEqual(decoder.newlines, None) |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3062 | |
| 3063 | def test_newline_decoder(self): |
| 3064 | encodings = ( |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3065 | # None meaning the IncrementalNewlineDecoder takes unicode input |
| 3066 | # rather than bytes input |
| 3067 | None, 'utf-8', 'latin-1', |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3068 | 'utf-16', 'utf-16-le', 'utf-16-be', |
| 3069 | 'utf-32', 'utf-32-le', 'utf-32-be', |
| 3070 | ) |
| 3071 | for enc in encodings: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3072 | decoder = enc and codecs.getincrementaldecoder(enc)() |
| 3073 | decoder = self.IncrementalNewlineDecoder(decoder, translate=True) |
| 3074 | self.check_newline_decoding(decoder, enc) |
Alexandre Vassalotti | 472f07d | 2008-01-06 00:34:32 +0000 | [diff] [blame] | 3075 | decoder = codecs.getincrementaldecoder("utf-8")() |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3076 | decoder = self.IncrementalNewlineDecoder(decoder, translate=True) |
| 3077 | self.check_newline_decoding_utf8(decoder) |
| 3078 | |
Antoine Pitrou | 66913e2 | 2009-03-06 23:40:56 +0000 | [diff] [blame] | 3079 | def test_newline_bytes(self): |
| 3080 | # Issue 5433: Excessive optimization in IncrementalNewlineDecoder |
| 3081 | def _check(dec): |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3082 | self.assertEqual(dec.newlines, None) |
| 3083 | self.assertEqual(dec.decode("\u0D00"), "\u0D00") |
| 3084 | self.assertEqual(dec.newlines, None) |
| 3085 | self.assertEqual(dec.decode("\u0A00"), "\u0A00") |
| 3086 | self.assertEqual(dec.newlines, None) |
Antoine Pitrou | 66913e2 | 2009-03-06 23:40:56 +0000 | [diff] [blame] | 3087 | dec = self.IncrementalNewlineDecoder(None, translate=False) |
| 3088 | _check(dec) |
| 3089 | dec = self.IncrementalNewlineDecoder(None, translate=True) |
| 3090 | _check(dec) |
| 3091 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3092 | class CIncrementalNewlineDecoderTest(IncrementalNewlineDecoderTest): |
| 3093 | pass |
| 3094 | |
| 3095 | class PyIncrementalNewlineDecoderTest(IncrementalNewlineDecoderTest): |
| 3096 | pass |
Antoine Pitrou | 180a336 | 2008-12-14 16:36:46 +0000 | [diff] [blame] | 3097 | |
Alexandre Vassalotti | 472f07d | 2008-01-06 00:34:32 +0000 | [diff] [blame] | 3098 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 3099 | # XXX Tests for open() |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 3100 | |
Guido van Rossum | 5abbf75 | 2007-08-27 17:39:33 +0000 | [diff] [blame] | 3101 | class MiscIOTest(unittest.TestCase): |
| 3102 | |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3103 | def tearDown(self): |
| 3104 | support.unlink(support.TESTFN) |
| 3105 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3106 | def test___all__(self): |
| 3107 | for name in self.io.__all__: |
| 3108 | obj = getattr(self.io, name, None) |
Benjamin Peterson | bfb9594 | 2009-04-02 01:13:40 +0000 | [diff] [blame] | 3109 | self.assertTrue(obj is not None, name) |
Guido van Rossum | 5abbf75 | 2007-08-27 17:39:33 +0000 | [diff] [blame] | 3110 | if name == "open": |
| 3111 | continue |
Benjamin Peterson | 6a52a9c | 2009-04-29 22:00:44 +0000 | [diff] [blame] | 3112 | elif "error" in name.lower() or name == "UnsupportedOperation": |
Benjamin Peterson | bfb9594 | 2009-04-02 01:13:40 +0000 | [diff] [blame] | 3113 | self.assertTrue(issubclass(obj, Exception), name) |
| 3114 | elif not name.startswith("SEEK_"): |
| 3115 | self.assertTrue(issubclass(obj, self.IOBase)) |
Benjamin Peterson | 65676e4 | 2008-11-05 21:42:45 +0000 | [diff] [blame] | 3116 | |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3117 | def test_attributes(self): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3118 | f = self.open(support.TESTFN, "wb", buffering=0) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3119 | self.assertEqual(f.mode, "wb") |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3120 | f.close() |
| 3121 | |
Serhiy Storchaka | 2480c2e | 2013-11-24 23:13:26 +0200 | [diff] [blame] | 3122 | with support.check_warnings(('', DeprecationWarning)): |
| 3123 | f = self.open(support.TESTFN, "U") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3124 | self.assertEqual(f.name, support.TESTFN) |
| 3125 | self.assertEqual(f.buffer.name, support.TESTFN) |
| 3126 | self.assertEqual(f.buffer.raw.name, support.TESTFN) |
| 3127 | self.assertEqual(f.mode, "U") |
| 3128 | self.assertEqual(f.buffer.mode, "rb") |
| 3129 | self.assertEqual(f.buffer.raw.mode, "rb") |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3130 | f.close() |
| 3131 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3132 | f = self.open(support.TESTFN, "w+") |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3133 | self.assertEqual(f.mode, "w+") |
| 3134 | self.assertEqual(f.buffer.mode, "rb+") # Does it really matter? |
| 3135 | self.assertEqual(f.buffer.raw.mode, "rb+") |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3136 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3137 | g = self.open(f.fileno(), "wb", closefd=False) |
Ezio Melotti | b3aedd4 | 2010-11-20 19:04:17 +0000 | [diff] [blame] | 3138 | self.assertEqual(g.mode, "wb") |
| 3139 | self.assertEqual(g.raw.mode, "wb") |
| 3140 | self.assertEqual(g.name, f.fileno()) |
| 3141 | self.assertEqual(g.raw.name, f.fileno()) |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3142 | f.close() |
| 3143 | g.close() |
| 3144 | |
Antoine Pitrou | 8043cf8 | 2009-01-09 19:54:29 +0000 | [diff] [blame] | 3145 | def test_io_after_close(self): |
| 3146 | for kwargs in [ |
| 3147 | {"mode": "w"}, |
| 3148 | {"mode": "wb"}, |
| 3149 | {"mode": "w", "buffering": 1}, |
| 3150 | {"mode": "w", "buffering": 2}, |
| 3151 | {"mode": "wb", "buffering": 0}, |
| 3152 | {"mode": "r"}, |
| 3153 | {"mode": "rb"}, |
| 3154 | {"mode": "r", "buffering": 1}, |
| 3155 | {"mode": "r", "buffering": 2}, |
| 3156 | {"mode": "rb", "buffering": 0}, |
| 3157 | {"mode": "w+"}, |
| 3158 | {"mode": "w+b"}, |
| 3159 | {"mode": "w+", "buffering": 1}, |
| 3160 | {"mode": "w+", "buffering": 2}, |
| 3161 | {"mode": "w+b", "buffering": 0}, |
| 3162 | ]: |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3163 | f = self.open(support.TESTFN, **kwargs) |
Antoine Pitrou | 8043cf8 | 2009-01-09 19:54:29 +0000 | [diff] [blame] | 3164 | f.close() |
| 3165 | self.assertRaises(ValueError, f.flush) |
| 3166 | self.assertRaises(ValueError, f.fileno) |
| 3167 | self.assertRaises(ValueError, f.isatty) |
| 3168 | self.assertRaises(ValueError, f.__iter__) |
| 3169 | if hasattr(f, "peek"): |
| 3170 | self.assertRaises(ValueError, f.peek, 1) |
| 3171 | self.assertRaises(ValueError, f.read) |
| 3172 | if hasattr(f, "read1"): |
| 3173 | self.assertRaises(ValueError, f.read1, 1024) |
Victor Stinner | b79f28c | 2011-05-25 22:09:03 +0200 | [diff] [blame] | 3174 | if hasattr(f, "readall"): |
| 3175 | self.assertRaises(ValueError, f.readall) |
Antoine Pitrou | 8043cf8 | 2009-01-09 19:54:29 +0000 | [diff] [blame] | 3176 | if hasattr(f, "readinto"): |
| 3177 | self.assertRaises(ValueError, f.readinto, bytearray(1024)) |
| 3178 | self.assertRaises(ValueError, f.readline) |
| 3179 | self.assertRaises(ValueError, f.readlines) |
| 3180 | self.assertRaises(ValueError, f.seek, 0) |
| 3181 | self.assertRaises(ValueError, f.tell) |
| 3182 | self.assertRaises(ValueError, f.truncate) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3183 | self.assertRaises(ValueError, f.write, |
| 3184 | b"" if "b" in kwargs['mode'] else "") |
Antoine Pitrou | 8043cf8 | 2009-01-09 19:54:29 +0000 | [diff] [blame] | 3185 | self.assertRaises(ValueError, f.writelines, []) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3186 | self.assertRaises(ValueError, next, f) |
Antoine Pitrou | 8043cf8 | 2009-01-09 19:54:29 +0000 | [diff] [blame] | 3187 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3188 | def test_blockingioerror(self): |
| 3189 | # Various BlockingIOError issues |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3190 | class C(str): |
| 3191 | pass |
| 3192 | c = C("") |
| 3193 | b = self.BlockingIOError(1, c) |
| 3194 | c.b = b |
| 3195 | b.c = c |
| 3196 | wr = weakref.ref(c) |
| 3197 | del c, b |
Benjamin Peterson | 24fb1d0 | 2009-04-24 23:26:21 +0000 | [diff] [blame] | 3198 | support.gc_collect() |
Benjamin Peterson | c9c0f20 | 2009-06-30 23:06:06 +0000 | [diff] [blame] | 3199 | self.assertTrue(wr() is None, wr) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3200 | |
| 3201 | def test_abcs(self): |
| 3202 | # Test the visible base classes are ABCs. |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 3203 | self.assertIsInstance(self.IOBase, abc.ABCMeta) |
| 3204 | self.assertIsInstance(self.RawIOBase, abc.ABCMeta) |
| 3205 | self.assertIsInstance(self.BufferedIOBase, abc.ABCMeta) |
| 3206 | self.assertIsInstance(self.TextIOBase, abc.ABCMeta) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3207 | |
| 3208 | def _check_abc_inheritance(self, abcmodule): |
| 3209 | with self.open(support.TESTFN, "wb", buffering=0) as f: |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 3210 | self.assertIsInstance(f, abcmodule.IOBase) |
| 3211 | self.assertIsInstance(f, abcmodule.RawIOBase) |
| 3212 | self.assertNotIsInstance(f, abcmodule.BufferedIOBase) |
| 3213 | self.assertNotIsInstance(f, abcmodule.TextIOBase) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3214 | with self.open(support.TESTFN, "wb") as f: |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 3215 | self.assertIsInstance(f, abcmodule.IOBase) |
| 3216 | self.assertNotIsInstance(f, abcmodule.RawIOBase) |
| 3217 | self.assertIsInstance(f, abcmodule.BufferedIOBase) |
| 3218 | self.assertNotIsInstance(f, abcmodule.TextIOBase) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3219 | with self.open(support.TESTFN, "w") as f: |
Ezio Melotti | e961593 | 2010-01-24 19:26:24 +0000 | [diff] [blame] | 3220 | self.assertIsInstance(f, abcmodule.IOBase) |
| 3221 | self.assertNotIsInstance(f, abcmodule.RawIOBase) |
| 3222 | self.assertNotIsInstance(f, abcmodule.BufferedIOBase) |
| 3223 | self.assertIsInstance(f, abcmodule.TextIOBase) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3224 | |
| 3225 | def test_abc_inheritance(self): |
| 3226 | # Test implementations inherit from their respective ABCs |
| 3227 | self._check_abc_inheritance(self) |
| 3228 | |
| 3229 | def test_abc_inheritance_official(self): |
| 3230 | # Test implementations inherit from the official ABCs of the |
| 3231 | # baseline "io" module. |
| 3232 | self._check_abc_inheritance(io) |
| 3233 | |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 3234 | def _check_warn_on_dealloc(self, *args, **kwargs): |
| 3235 | f = open(*args, **kwargs) |
| 3236 | r = repr(f) |
| 3237 | with self.assertWarns(ResourceWarning) as cm: |
| 3238 | f = None |
| 3239 | support.gc_collect() |
| 3240 | self.assertIn(r, str(cm.warning.args[0])) |
| 3241 | |
| 3242 | def test_warn_on_dealloc(self): |
| 3243 | self._check_warn_on_dealloc(support.TESTFN, "wb", buffering=0) |
| 3244 | self._check_warn_on_dealloc(support.TESTFN, "wb") |
| 3245 | self._check_warn_on_dealloc(support.TESTFN, "w") |
| 3246 | |
| 3247 | def _check_warn_on_dealloc_fd(self, *args, **kwargs): |
| 3248 | fds = [] |
Benjamin Peterson | 556c735 | 2010-10-31 01:35:43 +0000 | [diff] [blame] | 3249 | def cleanup_fds(): |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 3250 | for fd in fds: |
| 3251 | try: |
| 3252 | os.close(fd) |
Andrew Svetlov | 3438fa4 | 2012-12-17 23:35:18 +0200 | [diff] [blame] | 3253 | except OSError as e: |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 3254 | if e.errno != errno.EBADF: |
| 3255 | raise |
Benjamin Peterson | 556c735 | 2010-10-31 01:35:43 +0000 | [diff] [blame] | 3256 | self.addCleanup(cleanup_fds) |
| 3257 | r, w = os.pipe() |
| 3258 | fds += r, w |
| 3259 | self._check_warn_on_dealloc(r, *args, **kwargs) |
| 3260 | # When using closefd=False, there's no warning |
| 3261 | r, w = os.pipe() |
| 3262 | fds += r, w |
| 3263 | with warnings.catch_warnings(record=True) as recorded: |
| 3264 | open(r, *args, closefd=False, **kwargs) |
| 3265 | support.gc_collect() |
| 3266 | self.assertEqual(recorded, []) |
Antoine Pitrou | e033e06 | 2010-10-29 10:38:18 +0000 | [diff] [blame] | 3267 | |
| 3268 | def test_warn_on_dealloc_fd(self): |
| 3269 | self._check_warn_on_dealloc_fd("rb", buffering=0) |
| 3270 | self._check_warn_on_dealloc_fd("rb") |
| 3271 | self._check_warn_on_dealloc_fd("r") |
| 3272 | |
| 3273 | |
Antoine Pitrou | 243757e | 2010-11-05 21:15:39 +0000 | [diff] [blame] | 3274 | def test_pickling(self): |
| 3275 | # Pickling file objects is forbidden |
| 3276 | for kwargs in [ |
| 3277 | {"mode": "w"}, |
| 3278 | {"mode": "wb"}, |
| 3279 | {"mode": "wb", "buffering": 0}, |
| 3280 | {"mode": "r"}, |
| 3281 | {"mode": "rb"}, |
| 3282 | {"mode": "rb", "buffering": 0}, |
| 3283 | {"mode": "w+"}, |
| 3284 | {"mode": "w+b"}, |
| 3285 | {"mode": "w+b", "buffering": 0}, |
| 3286 | ]: |
| 3287 | for protocol in range(pickle.HIGHEST_PROTOCOL + 1): |
| 3288 | with self.open(support.TESTFN, **kwargs) as f: |
| 3289 | self.assertRaises(TypeError, pickle.dumps, f, protocol) |
| 3290 | |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 3291 | @unittest.skipUnless(fcntl, 'fcntl required for this test') |
| 3292 | def test_nonblock_pipe_write_bigbuf(self): |
| 3293 | self._test_nonblock_pipe_write(16*1024) |
| 3294 | |
| 3295 | @unittest.skipUnless(fcntl, 'fcntl required for this test') |
| 3296 | def test_nonblock_pipe_write_smallbuf(self): |
| 3297 | self._test_nonblock_pipe_write(1024) |
| 3298 | |
| 3299 | def _set_non_blocking(self, fd): |
| 3300 | flags = fcntl.fcntl(fd, fcntl.F_GETFL) |
| 3301 | self.assertNotEqual(flags, -1) |
| 3302 | res = fcntl.fcntl(fd, fcntl.F_SETFL, flags | os.O_NONBLOCK) |
| 3303 | self.assertEqual(res, 0) |
| 3304 | |
| 3305 | def _test_nonblock_pipe_write(self, bufsize): |
| 3306 | sent = [] |
| 3307 | received = [] |
| 3308 | r, w = os.pipe() |
| 3309 | self._set_non_blocking(r) |
| 3310 | self._set_non_blocking(w) |
| 3311 | |
| 3312 | # To exercise all code paths in the C implementation we need |
| 3313 | # to play with buffer sizes. For instance, if we choose a |
| 3314 | # buffer size less than or equal to _PIPE_BUF (4096 on Linux) |
| 3315 | # then we will never get a partial write of the buffer. |
| 3316 | rf = self.open(r, mode='rb', closefd=True, buffering=bufsize) |
| 3317 | wf = self.open(w, mode='wb', closefd=True, buffering=bufsize) |
| 3318 | |
| 3319 | with rf, wf: |
| 3320 | for N in 9999, 73, 7574: |
| 3321 | try: |
| 3322 | i = 0 |
| 3323 | while True: |
| 3324 | msg = bytes([i % 26 + 97]) * N |
| 3325 | sent.append(msg) |
| 3326 | wf.write(msg) |
| 3327 | i += 1 |
| 3328 | |
| 3329 | except self.BlockingIOError as e: |
| 3330 | self.assertEqual(e.args[0], errno.EAGAIN) |
Antoine Pitrou | 7fe601c | 2011-11-21 20:22:01 +0100 | [diff] [blame] | 3331 | self.assertEqual(e.args[2], e.characters_written) |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 3332 | sent[-1] = sent[-1][:e.characters_written] |
| 3333 | received.append(rf.read()) |
| 3334 | msg = b'BLOCKED' |
| 3335 | wf.write(msg) |
| 3336 | sent.append(msg) |
| 3337 | |
| 3338 | while True: |
| 3339 | try: |
| 3340 | wf.flush() |
| 3341 | break |
| 3342 | except self.BlockingIOError as e: |
| 3343 | self.assertEqual(e.args[0], errno.EAGAIN) |
Antoine Pitrou | 7fe601c | 2011-11-21 20:22:01 +0100 | [diff] [blame] | 3344 | self.assertEqual(e.args[2], e.characters_written) |
Antoine Pitrou | 58fcf9f | 2011-11-21 20:16:44 +0100 | [diff] [blame] | 3345 | self.assertEqual(e.characters_written, 0) |
| 3346 | received.append(rf.read()) |
| 3347 | |
| 3348 | received += iter(rf.read, None) |
| 3349 | |
| 3350 | sent, received = b''.join(sent), b''.join(received) |
| 3351 | self.assertTrue(sent == received) |
| 3352 | self.assertTrue(wf.closed) |
| 3353 | self.assertTrue(rf.closed) |
| 3354 | |
Charles-François Natali | dc3044c | 2012-01-09 22:40:02 +0100 | [diff] [blame] | 3355 | def test_create_fail(self): |
| 3356 | # 'x' mode fails if file is existing |
| 3357 | with self.open(support.TESTFN, 'w'): |
| 3358 | pass |
| 3359 | self.assertRaises(FileExistsError, self.open, support.TESTFN, 'x') |
| 3360 | |
| 3361 | def test_create_writes(self): |
| 3362 | # 'x' mode opens for writing |
| 3363 | with self.open(support.TESTFN, 'xb') as f: |
| 3364 | f.write(b"spam") |
| 3365 | with self.open(support.TESTFN, 'rb') as f: |
| 3366 | self.assertEqual(b"spam", f.read()) |
| 3367 | |
Christian Heimes | 7b64875 | 2012-09-10 14:48:43 +0200 | [diff] [blame] | 3368 | def test_open_allargs(self): |
| 3369 | # there used to be a buffer overflow in the parser for rawmode |
| 3370 | self.assertRaises(ValueError, self.open, support.TESTFN, 'rwax+') |
| 3371 | |
| 3372 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3373 | class CMiscIOTest(MiscIOTest): |
| 3374 | io = io |
| 3375 | |
Serhiy Storchaka | 37a79a1 | 2013-05-28 16:24:45 +0300 | [diff] [blame] | 3376 | def test_readinto_buffer_overflow(self): |
| 3377 | # Issue #18025 |
| 3378 | class BadReader(self.io.BufferedIOBase): |
| 3379 | def read(self, n=-1): |
| 3380 | return b'x' * 10**6 |
| 3381 | bufio = BadReader() |
| 3382 | b = bytearray(2) |
| 3383 | self.assertRaises(ValueError, bufio.readinto, b) |
| 3384 | |
Antoine Pitrou | 25f85d4 | 2015-04-13 19:41:47 +0200 | [diff] [blame] | 3385 | @unittest.skipUnless(threading, 'Threading required for this test.') |
| 3386 | def check_daemon_threads_shutdown_deadlock(self, stream_name): |
| 3387 | # Issue #23309: deadlocks at shutdown should be avoided when a |
| 3388 | # daemon thread and the main thread both write to a file. |
| 3389 | code = """if 1: |
| 3390 | import sys |
| 3391 | import time |
| 3392 | import threading |
| 3393 | |
| 3394 | file = sys.{stream_name} |
| 3395 | |
| 3396 | def run(): |
| 3397 | while True: |
| 3398 | file.write('.') |
| 3399 | file.flush() |
| 3400 | |
| 3401 | thread = threading.Thread(target=run) |
| 3402 | thread.daemon = True |
| 3403 | thread.start() |
| 3404 | |
| 3405 | time.sleep(0.5) |
| 3406 | file.write('!') |
| 3407 | file.flush() |
| 3408 | """.format_map(locals()) |
| 3409 | res, _ = run_python_until_end("-c", code) |
| 3410 | err = res.err.decode() |
| 3411 | if res.rc != 0: |
| 3412 | # Failure: should be a fatal error |
| 3413 | self.assertIn("Fatal Python error: could not acquire lock " |
| 3414 | "for <_io.BufferedWriter name='<{stream_name}>'> " |
| 3415 | "at interpreter shutdown, possibly due to " |
| 3416 | "daemon threads".format_map(locals()), |
| 3417 | err) |
| 3418 | else: |
| 3419 | self.assertFalse(err.strip('.!')) |
| 3420 | |
| 3421 | def test_daemon_threads_shutdown_stdout_deadlock(self): |
| 3422 | self.check_daemon_threads_shutdown_deadlock('stdout') |
| 3423 | |
| 3424 | def test_daemon_threads_shutdown_stderr_deadlock(self): |
| 3425 | self.check_daemon_threads_shutdown_deadlock('stderr') |
| 3426 | |
| 3427 | |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3428 | class PyMiscIOTest(MiscIOTest): |
| 3429 | io = pyio |
Barry Warsaw | 40e8246 | 2008-11-20 20:14:50 +0000 | [diff] [blame] | 3430 | |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3431 | |
| 3432 | @unittest.skipIf(os.name == 'nt', 'POSIX signals required for this test.') |
| 3433 | class SignalsTest(unittest.TestCase): |
| 3434 | |
| 3435 | def setUp(self): |
| 3436 | self.oldalrm = signal.signal(signal.SIGALRM, self.alarm_interrupt) |
| 3437 | |
| 3438 | def tearDown(self): |
| 3439 | signal.signal(signal.SIGALRM, self.oldalrm) |
| 3440 | |
| 3441 | def alarm_interrupt(self, sig, frame): |
| 3442 | 1/0 |
| 3443 | |
| 3444 | @unittest.skipUnless(threading, 'Threading required for this test.') |
| 3445 | def check_interrupted_write(self, item, bytes, **fdopen_kwargs): |
| 3446 | """Check that a partial write, when it gets interrupted, properly |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3447 | invokes the signal handler, and bubbles up the exception raised |
| 3448 | in the latter.""" |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3449 | read_results = [] |
| 3450 | def _read(): |
Victor Stinner | a929335 | 2011-04-30 15:21:58 +0200 | [diff] [blame] | 3451 | if hasattr(signal, 'pthread_sigmask'): |
| 3452 | signal.pthread_sigmask(signal.SIG_BLOCK, [signal.SIGALRM]) |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3453 | s = os.read(r, 1) |
| 3454 | read_results.append(s) |
| 3455 | t = threading.Thread(target=_read) |
| 3456 | t.daemon = True |
| 3457 | r, w = os.pipe() |
Benjamin Peterson | d8fc2e1 | 2010-10-31 01:19:53 +0000 | [diff] [blame] | 3458 | fdopen_kwargs["closefd"] = False |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3459 | try: |
| 3460 | wio = self.io.open(w, **fdopen_kwargs) |
| 3461 | t.start() |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3462 | # Fill the pipe enough that the write will be blocking. |
| 3463 | # It will be interrupted by the timer armed above. Since the |
| 3464 | # other thread has read one byte, the low-level write will |
| 3465 | # return with a successful (partial) result rather than an EINTR. |
| 3466 | # The buffered IO layer must check for pending signal |
| 3467 | # handlers, which in this case will invoke alarm_interrupt(). |
Victor Stinner | 775b2dd | 2013-07-15 19:53:13 +0200 | [diff] [blame] | 3468 | signal.alarm(1) |
| 3469 | try: |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 3470 | with self.assertRaises(ZeroDivisionError): |
| 3471 | wio.write(item * (support.PIPE_MAX_SIZE // len(item) + 1)) |
Victor Stinner | 775b2dd | 2013-07-15 19:53:13 +0200 | [diff] [blame] | 3472 | finally: |
| 3473 | signal.alarm(0) |
Serhiy Storchaka | 263dcd2 | 2015-04-01 13:01:14 +0300 | [diff] [blame] | 3474 | t.join() |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3475 | # We got one byte, get another one and check that it isn't a |
| 3476 | # repeat of the first one. |
| 3477 | read_results.append(os.read(r, 1)) |
| 3478 | self.assertEqual(read_results, [bytes[0:1], bytes[1:2]]) |
| 3479 | finally: |
| 3480 | os.close(w) |
| 3481 | os.close(r) |
| 3482 | # This is deliberate. If we didn't close the file descriptor |
| 3483 | # before closing wio, wio would try to flush its internal |
| 3484 | # buffer, and block again. |
| 3485 | try: |
| 3486 | wio.close() |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 3487 | except OSError as e: |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3488 | if e.errno != errno.EBADF: |
| 3489 | raise |
| 3490 | |
| 3491 | def test_interrupted_write_unbuffered(self): |
| 3492 | self.check_interrupted_write(b"xy", b"xy", mode="wb", buffering=0) |
| 3493 | |
| 3494 | def test_interrupted_write_buffered(self): |
| 3495 | self.check_interrupted_write(b"xy", b"xy", mode="wb") |
| 3496 | |
Victor Stinner | 6ab7286 | 2014-09-03 23:32:28 +0200 | [diff] [blame] | 3497 | # Issue #22331: The test hangs on FreeBSD 7.2 |
| 3498 | @support.requires_freebsd_version(8) |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3499 | def test_interrupted_write_text(self): |
| 3500 | self.check_interrupted_write("xy", b"xy", mode="w", encoding="ascii") |
| 3501 | |
Brett Cannon | 31f5929 | 2011-02-21 19:29:56 +0000 | [diff] [blame] | 3502 | @support.no_tracing |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 3503 | def check_reentrant_write(self, data, **fdopen_kwargs): |
| 3504 | def on_alarm(*args): |
| 3505 | # Will be called reentrantly from the same thread |
| 3506 | wio.write(data) |
| 3507 | 1/0 |
| 3508 | signal.signal(signal.SIGALRM, on_alarm) |
| 3509 | r, w = os.pipe() |
| 3510 | wio = self.io.open(w, **fdopen_kwargs) |
| 3511 | try: |
Gregory P. Smith | b5ba203 | 2012-06-25 01:13:32 -0700 | [diff] [blame] | 3512 | signal.alarm(1) |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 3513 | # Either the reentrant call to wio.write() fails with RuntimeError, |
| 3514 | # or the signal handler raises ZeroDivisionError. |
| 3515 | with self.assertRaises((ZeroDivisionError, RuntimeError)) as cm: |
| 3516 | while 1: |
| 3517 | for i in range(100): |
| 3518 | wio.write(data) |
| 3519 | wio.flush() |
| 3520 | # Make sure the buffer doesn't fill up and block further writes |
| 3521 | os.read(r, len(data) * 100) |
| 3522 | exc = cm.exception |
| 3523 | if isinstance(exc, RuntimeError): |
| 3524 | self.assertTrue(str(exc).startswith("reentrant call"), str(exc)) |
| 3525 | finally: |
| 3526 | wio.close() |
| 3527 | os.close(r) |
| 3528 | |
| 3529 | def test_reentrant_write_buffered(self): |
| 3530 | self.check_reentrant_write(b"xy", mode="wb") |
| 3531 | |
| 3532 | def test_reentrant_write_text(self): |
| 3533 | self.check_reentrant_write("xy", mode="w", encoding="ascii") |
| 3534 | |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3535 | def check_interrupted_read_retry(self, decode, **fdopen_kwargs): |
| 3536 | """Check that a buffered read, when it gets interrupted (either |
| 3537 | returning a partial result or EINTR), properly invokes the signal |
| 3538 | handler and retries if the latter returned successfully.""" |
| 3539 | r, w = os.pipe() |
| 3540 | fdopen_kwargs["closefd"] = False |
| 3541 | def alarm_handler(sig, frame): |
| 3542 | os.write(w, b"bar") |
| 3543 | signal.signal(signal.SIGALRM, alarm_handler) |
| 3544 | try: |
| 3545 | rio = self.io.open(r, **fdopen_kwargs) |
| 3546 | os.write(w, b"foo") |
Gregory P. Smith | b5ba203 | 2012-06-25 01:13:32 -0700 | [diff] [blame] | 3547 | signal.alarm(1) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3548 | # Expected behaviour: |
| 3549 | # - first raw read() returns partial b"foo" |
| 3550 | # - second raw read() returns EINTR |
| 3551 | # - third raw read() returns b"bar" |
| 3552 | self.assertEqual(decode(rio.read(6)), "foobar") |
| 3553 | finally: |
| 3554 | rio.close() |
| 3555 | os.close(w) |
| 3556 | os.close(r) |
| 3557 | |
Antoine Pitrou | 20db511 | 2011-08-19 20:32:34 +0200 | [diff] [blame] | 3558 | def test_interrupted_read_retry_buffered(self): |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3559 | self.check_interrupted_read_retry(lambda x: x.decode('latin1'), |
| 3560 | mode="rb") |
| 3561 | |
Antoine Pitrou | 20db511 | 2011-08-19 20:32:34 +0200 | [diff] [blame] | 3562 | def test_interrupted_read_retry_text(self): |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3563 | self.check_interrupted_read_retry(lambda x: x, |
| 3564 | mode="r") |
| 3565 | |
| 3566 | @unittest.skipUnless(threading, 'Threading required for this test.') |
| 3567 | def check_interrupted_write_retry(self, item, **fdopen_kwargs): |
| 3568 | """Check that a buffered write, when it gets interrupted (either |
| 3569 | returning a partial result or EINTR), properly invokes the signal |
| 3570 | handler and retries if the latter returned successfully.""" |
| 3571 | select = support.import_module("select") |
| 3572 | # A quantity that exceeds the buffer size of an anonymous pipe's |
| 3573 | # write end. |
Antoine Pitrou | e1a1674 | 2013-04-24 23:31:38 +0200 | [diff] [blame] | 3574 | N = support.PIPE_MAX_SIZE |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3575 | r, w = os.pipe() |
| 3576 | fdopen_kwargs["closefd"] = False |
| 3577 | # We need a separate thread to read from the pipe and allow the |
| 3578 | # write() to finish. This thread is started after the SIGALRM is |
| 3579 | # received (forcing a first EINTR in write()). |
| 3580 | read_results = [] |
| 3581 | write_finished = False |
Serhiy Storchaka | 9db5500 | 2015-03-28 20:38:37 +0200 | [diff] [blame] | 3582 | error = None |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3583 | def _read(): |
Serhiy Storchaka | 9db5500 | 2015-03-28 20:38:37 +0200 | [diff] [blame] | 3584 | try: |
| 3585 | while not write_finished: |
| 3586 | while r in select.select([r], [], [], 1.0)[0]: |
| 3587 | s = os.read(r, 1024) |
| 3588 | read_results.append(s) |
| 3589 | except BaseException as exc: |
| 3590 | nonlocal error |
| 3591 | error = exc |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3592 | t = threading.Thread(target=_read) |
| 3593 | t.daemon = True |
| 3594 | def alarm1(sig, frame): |
| 3595 | signal.signal(signal.SIGALRM, alarm2) |
Gregory P. Smith | b5ba203 | 2012-06-25 01:13:32 -0700 | [diff] [blame] | 3596 | signal.alarm(1) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3597 | def alarm2(sig, frame): |
| 3598 | t.start() |
| 3599 | signal.signal(signal.SIGALRM, alarm1) |
| 3600 | try: |
| 3601 | wio = self.io.open(w, **fdopen_kwargs) |
Gregory P. Smith | b5ba203 | 2012-06-25 01:13:32 -0700 | [diff] [blame] | 3602 | signal.alarm(1) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3603 | # Expected behaviour: |
| 3604 | # - first raw write() is partial (because of the limited pipe buffer |
| 3605 | # and the first alarm) |
| 3606 | # - second raw write() returns EINTR (because of the second alarm) |
| 3607 | # - subsequent write()s are successful (either partial or complete) |
| 3608 | self.assertEqual(N, wio.write(item * N)) |
| 3609 | wio.flush() |
| 3610 | write_finished = True |
| 3611 | t.join() |
Serhiy Storchaka | 9db5500 | 2015-03-28 20:38:37 +0200 | [diff] [blame] | 3612 | |
| 3613 | self.assertIsNone(error) |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3614 | self.assertEqual(N, sum(len(x) for x in read_results)) |
| 3615 | finally: |
| 3616 | write_finished = True |
| 3617 | os.close(w) |
| 3618 | os.close(r) |
| 3619 | # This is deliberate. If we didn't close the file descriptor |
| 3620 | # before closing wio, wio would try to flush its internal |
| 3621 | # buffer, and could block (in case of failure). |
| 3622 | try: |
| 3623 | wio.close() |
Andrew Svetlov | f7a17b4 | 2012-12-25 16:47:37 +0200 | [diff] [blame] | 3624 | except OSError as e: |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3625 | if e.errno != errno.EBADF: |
| 3626 | raise |
| 3627 | |
Antoine Pitrou | 20db511 | 2011-08-19 20:32:34 +0200 | [diff] [blame] | 3628 | def test_interrupted_write_retry_buffered(self): |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3629 | self.check_interrupted_write_retry(b"x", mode="wb") |
| 3630 | |
Antoine Pitrou | 20db511 | 2011-08-19 20:32:34 +0200 | [diff] [blame] | 3631 | def test_interrupted_write_retry_text(self): |
Antoine Pitrou | 707ce82 | 2011-02-25 21:24:11 +0000 | [diff] [blame] | 3632 | self.check_interrupted_write_retry("x", mode="w", encoding="latin1") |
| 3633 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 3634 | |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3635 | class CSignalsTest(SignalsTest): |
| 3636 | io = io |
| 3637 | |
| 3638 | class PySignalsTest(SignalsTest): |
| 3639 | io = pyio |
| 3640 | |
Antoine Pitrou | f3b68b3 | 2010-12-03 18:41:39 +0000 | [diff] [blame] | 3641 | # Handling reentrancy issues would slow down _pyio even more, so the |
| 3642 | # tests are disabled. |
| 3643 | test_reentrant_write_buffered = None |
| 3644 | test_reentrant_write_text = None |
| 3645 | |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3646 | |
Ezio Melotti | daa42c7 | 2013-03-23 16:30:16 +0200 | [diff] [blame] | 3647 | def load_tests(*args): |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3648 | tests = (CIOTest, PyIOTest, |
| 3649 | CBufferedReaderTest, PyBufferedReaderTest, |
| 3650 | CBufferedWriterTest, PyBufferedWriterTest, |
| 3651 | CBufferedRWPairTest, PyBufferedRWPairTest, |
| 3652 | CBufferedRandomTest, PyBufferedRandomTest, |
| 3653 | StatefulIncrementalDecoderTest, |
| 3654 | CIncrementalNewlineDecoderTest, PyIncrementalNewlineDecoderTest, |
| 3655 | CTextIOWrapperTest, PyTextIOWrapperTest, |
Antoine Pitrou | b46b9d5 | 2010-08-21 19:09:32 +0000 | [diff] [blame] | 3656 | CMiscIOTest, PyMiscIOTest, |
| 3657 | CSignalsTest, PySignalsTest, |
| 3658 | ) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3659 | |
| 3660 | # Put the namespaces of the IO module we are testing and some useful mock |
| 3661 | # classes in the __dict__ of each test. |
| 3662 | mocks = (MockRawIO, MisbehavedRawIO, MockFileIO, CloseFailureIO, |
Antoine Pitrou | 328ec74 | 2010-09-14 18:37:24 +0000 | [diff] [blame] | 3663 | MockNonBlockWriterIO, MockUnseekableIO, MockRawIOWithoutRead) |
Benjamin Peterson | 4fa88fa | 2009-03-04 00:14:51 +0000 | [diff] [blame] | 3664 | all_members = io.__all__ + ["IncrementalNewlineDecoder"] |
| 3665 | c_io_ns = {name : getattr(io, name) for name in all_members} |
| 3666 | py_io_ns = {name : getattr(pyio, name) for name in all_members} |
| 3667 | globs = globals() |
| 3668 | c_io_ns.update((x.__name__, globs["C" + x.__name__]) for x in mocks) |
| 3669 | py_io_ns.update((x.__name__, globs["Py" + x.__name__]) for x in mocks) |
| 3670 | # Avoid turning open into a bound method. |
| 3671 | py_io_ns["open"] = pyio.OpenWrapper |
| 3672 | for test in tests: |
| 3673 | if test.__name__.startswith("C"): |
| 3674 | for name, obj in c_io_ns.items(): |
| 3675 | setattr(test, name, obj) |
| 3676 | elif test.__name__.startswith("Py"): |
| 3677 | for name, obj in py_io_ns.items(): |
| 3678 | setattr(test, name, obj) |
| 3679 | |
Ezio Melotti | daa42c7 | 2013-03-23 16:30:16 +0200 | [diff] [blame] | 3680 | suite = unittest.TestSuite([unittest.makeSuite(test) for test in tests]) |
| 3681 | return suite |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 3682 | |
| 3683 | if __name__ == "__main__": |
Ezio Melotti | daa42c7 | 2013-03-23 16:30:16 +0200 | [diff] [blame] | 3684 | unittest.main() |