Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 1 | """Unit tests for io.py.""" |
| 2 | |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 3 | import sys |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 4 | import unittest |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 5 | from itertools import chain |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 6 | from test import test_support |
| 7 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 8 | import io # The module under test |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 9 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 10 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 11 | class MockRawIO(io.RawIOBase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 12 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 13 | def __init__(self, read_stack=()): |
| 14 | self._read_stack = list(read_stack) |
| 15 | self._write_stack = [] |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 16 | |
| 17 | def read(self, n=None): |
| 18 | try: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 19 | return self._read_stack.pop(0) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 20 | except: |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 21 | return b"" |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 22 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 23 | def write(self, b): |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 24 | self._write_stack.append(b[:]) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 25 | return len(b) |
| 26 | |
| 27 | def writable(self): |
| 28 | return True |
| 29 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 30 | def fileno(self): |
| 31 | return 42 |
| 32 | |
| 33 | def readable(self): |
| 34 | return True |
| 35 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 36 | def seekable(self): |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 37 | return True |
| 38 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 39 | def seek(self, pos, whence): |
| 40 | pass |
| 41 | |
| 42 | def tell(self): |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 43 | return 42 |
| 44 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 45 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 46 | class MockFileIO(io.BytesIO): |
| 47 | |
| 48 | def __init__(self, data): |
| 49 | self.read_history = [] |
| 50 | io.BytesIO.__init__(self, data) |
| 51 | |
| 52 | def read(self, n=None): |
| 53 | res = io.BytesIO.read(self, n) |
| 54 | self.read_history.append(None if res is None else len(res)) |
| 55 | return res |
| 56 | |
| 57 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 58 | class MockNonBlockWriterIO(io.RawIOBase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 59 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 60 | def __init__(self, blocking_script): |
| 61 | self._blocking_script = list(blocking_script) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 62 | self._write_stack = [] |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 63 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 64 | def write(self, b): |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 65 | self._write_stack.append(b[:]) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 66 | n = self._blocking_script.pop(0) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 67 | if (n < 0): |
Guido van Rossum | 141f767 | 2007-04-10 00:22:16 +0000 | [diff] [blame] | 68 | raise io.BlockingIOError(0, "test blocking", -n) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 69 | else: |
| 70 | return n |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 71 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 72 | def writable(self): |
| 73 | return True |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 74 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 75 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 76 | class IOTest(unittest.TestCase): |
| 77 | |
Guido van Rossum | 4d0f5a4 | 2007-03-07 22:59:39 +0000 | [diff] [blame] | 78 | def tearDown(self): |
| 79 | test_support.unlink(test_support.TESTFN) |
| 80 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 81 | def write_ops(self, f): |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 82 | self.assertEqual(f.write(b"blah."), 5) |
| 83 | self.assertEqual(f.seek(0), 0) |
| 84 | self.assertEqual(f.write(b"Hello."), 6) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 85 | self.assertEqual(f.tell(), 6) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 86 | self.assertEqual(f.seek(-1, 1), 5) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 87 | self.assertEqual(f.tell(), 5) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 88 | self.assertEqual(f.write(" world\n\n\n"), 9) |
| 89 | self.assertEqual(f.seek(0), 0) |
| 90 | self.assertEqual(f.write("h"), 1) |
| 91 | self.assertEqual(f.seek(-1, 2), 13) |
| 92 | self.assertEqual(f.tell(), 13) |
| 93 | self.assertEqual(f.truncate(12), 12) |
| 94 | self.assertEqual(f.tell(), 12) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 95 | |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 96 | LARGE = 2**31 |
| 97 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 98 | def large_file_ops(self, f): |
| 99 | assert f.readable() |
| 100 | assert f.writable() |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 101 | self.assertEqual(f.seek(self.LARGE), self.LARGE) |
| 102 | self.assertEqual(f.tell(), self.LARGE) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 103 | self.assertEqual(f.write(b"xxx"), 3) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 104 | self.assertEqual(f.tell(), self.LARGE + 3) |
| 105 | self.assertEqual(f.seek(-1, 1), self.LARGE + 2) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 106 | self.assertEqual(f.truncate(), self.LARGE + 2) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 107 | self.assertEqual(f.tell(), self.LARGE + 2) |
| 108 | self.assertEqual(f.seek(0, 2), self.LARGE + 2) |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 109 | self.assertEqual(f.truncate(self.LARGE + 1), self.LARGE + 1) |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 110 | self.assertEqual(f.tell(), self.LARGE + 1) |
| 111 | self.assertEqual(f.seek(0, 2), self.LARGE + 1) |
| 112 | self.assertEqual(f.seek(-1, 2), self.LARGE) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 113 | self.assertEqual(f.read(2), b"x") |
| 114 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 115 | def read_ops(self, f): |
| 116 | data = f.read(5) |
| 117 | self.assertEqual(data, b"hello") |
Guido van Rossum | 00efead | 2007-03-07 05:23:25 +0000 | [diff] [blame] | 118 | n = f.readinto(data) |
| 119 | self.assertEqual(n, 5) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 120 | self.assertEqual(data, b" worl") |
Guido van Rossum | 00efead | 2007-03-07 05:23:25 +0000 | [diff] [blame] | 121 | n = f.readinto(data) |
| 122 | self.assertEqual(n, 2) |
| 123 | self.assertEqual(len(data), 5) |
| 124 | self.assertEqual(data[:2], b"d\n") |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 125 | f.seek(0) |
| 126 | self.assertEqual(f.read(20), b"hello world\n") |
| 127 | f.seek(-6, 2) |
| 128 | self.assertEqual(f.read(5), b"world") |
| 129 | f.seek(-6, 1) |
| 130 | self.assertEqual(f.read(5), b" worl") |
| 131 | self.assertEqual(f.tell(), 10) |
| 132 | |
| 133 | def test_raw_file_io(self): |
| 134 | f = io.open(test_support.TESTFN, "wb", buffering=0) |
| 135 | self.assertEqual(f.readable(), False) |
| 136 | self.assertEqual(f.writable(), True) |
| 137 | self.assertEqual(f.seekable(), True) |
| 138 | self.write_ops(f) |
| 139 | f.close() |
| 140 | f = io.open(test_support.TESTFN, "rb", buffering=0) |
| 141 | self.assertEqual(f.readable(), True) |
| 142 | self.assertEqual(f.writable(), False) |
| 143 | self.assertEqual(f.seekable(), True) |
| 144 | self.read_ops(f) |
| 145 | f.close() |
| 146 | |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 147 | def test_buffered_file_io(self): |
| 148 | f = io.open(test_support.TESTFN, "wb") |
| 149 | self.assertEqual(f.readable(), False) |
| 150 | self.assertEqual(f.writable(), True) |
| 151 | self.assertEqual(f.seekable(), True) |
| 152 | self.write_ops(f) |
| 153 | f.close() |
| 154 | f = io.open(test_support.TESTFN, "rb") |
| 155 | self.assertEqual(f.readable(), True) |
| 156 | self.assertEqual(f.writable(), False) |
| 157 | self.assertEqual(f.seekable(), True) |
| 158 | self.read_ops(f) |
| 159 | f.close() |
| 160 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 161 | def test_raw_bytes_io(self): |
| 162 | f = io.BytesIO() |
| 163 | self.write_ops(f) |
| 164 | data = f.getvalue() |
| 165 | self.assertEqual(data, b"hello world\n") |
| 166 | f = io.BytesIO(data) |
| 167 | self.read_ops(f) |
| 168 | |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 169 | def test_large_file_ops(self): |
Guido van Rossum | 34d69e5 | 2007-04-10 20:08:41 +0000 | [diff] [blame] | 170 | # On Windows and Mac OSX this test comsumes large resources; It takes |
| 171 | # a long time to build the >2GB file and takes >2GB of disk space |
| 172 | # therefore the resource must be enabled to run this test. |
| 173 | if sys.platform[:3] == 'win' or sys.platform == 'darwin': |
| 174 | if not test_support.is_resource_enabled("largefile"): |
| 175 | print("\nTesting large file ops skipped on %s." % sys.platform, |
| 176 | file=sys.stderr) |
| 177 | print("It requires %d bytes and a long time." % self.LARGE, |
| 178 | file=sys.stderr) |
| 179 | print("Use 'regrtest.py -u largefile test_io' to run it.", |
| 180 | file=sys.stderr) |
| 181 | return |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 182 | f = io.open(test_support.TESTFN, "w+b", 0) |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 183 | self.large_file_ops(f) |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 184 | f.close() |
Guido van Rossum | 8742977 | 2007-04-10 21:06:59 +0000 | [diff] [blame^] | 185 | f = io.open(test_support.TESTFN, "w+b") |
| 186 | self.large_file_ops(f) |
| 187 | f.close() |
| 188 | |
| 189 | def test_with_open(self): |
| 190 | for bufsize in (0, 1, 100): |
| 191 | f = None |
| 192 | with open(test_support.TESTFN, "wb", bufsize) as f: |
| 193 | f.write("xxx") |
| 194 | self.assertEqual(f.closed, True) |
| 195 | f = None |
| 196 | try: |
| 197 | with open(test_support.TESTFN, "wb", bufsize) as f: |
| 198 | 1/0 |
| 199 | except ZeroDivisionError: |
| 200 | self.assertEqual(f.closed, True) |
| 201 | else: |
| 202 | self.fail("1/0 didn't raise an exception") |
| 203 | |
| 204 | def test_destructor(self): |
| 205 | record = [] |
| 206 | class MyFileIO(io.FileIO): |
| 207 | def __del__(self): |
| 208 | record.append(1) |
| 209 | io.FileIO.__del__(self) |
| 210 | def close(self): |
| 211 | record.append(2) |
| 212 | io.FileIO.close(self) |
| 213 | def flush(self): |
| 214 | record.append(3) |
| 215 | io.FileIO.flush(self) |
| 216 | f = MyFileIO(test_support.TESTFN, "w") |
| 217 | f.write("xxx") |
| 218 | del f |
| 219 | self.assertEqual(record, [1, 2, 3]) |
| 220 | |
| 221 | def test_close_flushes(self): |
| 222 | f = io.open(test_support.TESTFN, "wb") |
| 223 | f.write("xxx") |
| 224 | f.close() |
| 225 | f = io.open(test_support.TESTFN, "rb") |
| 226 | self.assertEqual(f.read(), b"xxx") |
| 227 | f.close() |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 228 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 229 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 230 | class MemorySeekTestMixin: |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 231 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 232 | def testInit(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 233 | buf = self.buftype("1234567890") |
| 234 | bytesIo = self.ioclass(buf) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 235 | |
| 236 | def testRead(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 237 | buf = self.buftype("1234567890") |
| 238 | bytesIo = self.ioclass(buf) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 239 | |
| 240 | self.assertEquals(buf[:1], bytesIo.read(1)) |
| 241 | self.assertEquals(buf[1:5], bytesIo.read(4)) |
| 242 | self.assertEquals(buf[5:], bytesIo.read(900)) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 243 | self.assertEquals(self.EOF, bytesIo.read()) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 244 | |
| 245 | def testReadNoArgs(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 246 | buf = self.buftype("1234567890") |
| 247 | bytesIo = self.ioclass(buf) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 248 | |
| 249 | self.assertEquals(buf, bytesIo.read()) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 250 | self.assertEquals(self.EOF, bytesIo.read()) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 251 | |
| 252 | def testSeek(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 253 | buf = self.buftype("1234567890") |
| 254 | bytesIo = self.ioclass(buf) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 255 | |
| 256 | bytesIo.read(5) |
| 257 | bytesIo.seek(0) |
| 258 | self.assertEquals(buf, bytesIo.read()) |
| 259 | |
| 260 | bytesIo.seek(3) |
| 261 | self.assertEquals(buf[3:], bytesIo.read()) |
| 262 | |
| 263 | def testTell(self): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 264 | buf = self.buftype("1234567890") |
| 265 | bytesIo = self.ioclass(buf) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 266 | |
| 267 | self.assertEquals(0, bytesIo.tell()) |
| 268 | bytesIo.seek(5) |
| 269 | self.assertEquals(5, bytesIo.tell()) |
| 270 | bytesIo.seek(10000) |
| 271 | self.assertEquals(10000, bytesIo.tell()) |
| 272 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 273 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 274 | class BytesIOTest(MemorySeekTestMixin, unittest.TestCase): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 275 | buftype = bytes |
| 276 | ioclass = io.BytesIO |
| 277 | EOF = b"" |
| 278 | |
| 279 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 280 | class StringIOTest(MemorySeekTestMixin, unittest.TestCase): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 281 | buftype = str |
| 282 | ioclass = io.StringIO |
| 283 | EOF = "" |
| 284 | |
| 285 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 286 | class BufferedReaderTest(unittest.TestCase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 287 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 288 | def testRead(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 289 | rawio = MockRawIO((b"abc", b"d", b"efg")) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 290 | bufio = io.BufferedReader(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 291 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 292 | self.assertEquals(b"abcdef", bufio.read(6)) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 293 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 294 | def testBuffering(self): |
| 295 | data = b"abcdefghi" |
| 296 | dlen = len(data) |
| 297 | |
| 298 | tests = [ |
| 299 | [ 100, [ 3, 1, 4, 8 ], [ dlen, 0 ] ], |
| 300 | [ 100, [ 3, 3, 3], [ dlen ] ], |
| 301 | [ 4, [ 1, 2, 4, 2 ], [ 4, 4, 1 ] ], |
| 302 | ] |
| 303 | |
| 304 | for bufsize, buf_read_sizes, raw_read_sizes in tests: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 305 | rawio = MockFileIO(data) |
| 306 | bufio = io.BufferedReader(rawio, buffer_size=bufsize) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 307 | pos = 0 |
| 308 | for nbytes in buf_read_sizes: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 309 | self.assertEquals(bufio.read(nbytes), data[pos:pos+nbytes]) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 310 | pos += nbytes |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 311 | self.assertEquals(rawio.read_history, raw_read_sizes) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 312 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 313 | def testReadNonBlocking(self): |
| 314 | # Inject some None's in there to simulate EWOULDBLOCK |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 315 | rawio = MockRawIO((b"abc", b"d", None, b"efg", None, None)) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 316 | bufio = io.BufferedReader(rawio) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 317 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 318 | self.assertEquals(b"abcd", bufio.read(6)) |
| 319 | self.assertEquals(b"e", bufio.read(1)) |
| 320 | self.assertEquals(b"fg", bufio.read()) |
| 321 | self.assert_(None is bufio.read()) |
| 322 | self.assertEquals(b"", bufio.read()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 323 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 324 | def testReadToEof(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 325 | rawio = MockRawIO((b"abc", b"d", b"efg")) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 326 | bufio = io.BufferedReader(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 327 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 328 | self.assertEquals(b"abcdefg", bufio.read(9000)) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 329 | |
| 330 | def testReadNoArgs(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 331 | rawio = MockRawIO((b"abc", b"d", b"efg")) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 332 | bufio = io.BufferedReader(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 333 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 334 | self.assertEquals(b"abcdefg", bufio.read()) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 335 | |
| 336 | def testFileno(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 337 | rawio = MockRawIO((b"abc", b"d", b"efg")) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 338 | bufio = io.BufferedReader(rawio) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 339 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 340 | self.assertEquals(42, bufio.fileno()) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 341 | |
| 342 | def testFilenoNoFileno(self): |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 343 | # XXX will we always have fileno() function? If so, kill |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 344 | # this test. Else, write it. |
| 345 | pass |
| 346 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 347 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 348 | class BufferedWriterTest(unittest.TestCase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 349 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 350 | def testWrite(self): |
| 351 | # Write to the buffered IO but don't overflow the buffer. |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 352 | writer = MockRawIO() |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 353 | bufio = io.BufferedWriter(writer, 8) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 354 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 355 | bufio.write(b"abc") |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 356 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 357 | self.assertFalse(writer._write_stack) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 358 | |
| 359 | def testWriteOverflow(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 360 | writer = MockRawIO() |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 361 | bufio = io.BufferedWriter(writer, 8) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 362 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 363 | bufio.write(b"abc") |
| 364 | bufio.write(b"defghijkl") |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 365 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 366 | self.assertEquals(b"abcdefghijkl", writer._write_stack[0]) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 367 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 368 | def testWriteNonBlocking(self): |
| 369 | raw = MockNonBlockWriterIO((9, 2, 22, -6, 10, 12, 12)) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 370 | bufio = io.BufferedWriter(raw, 8, 16) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 371 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 372 | bufio.write(b"asdf") |
| 373 | bufio.write(b"asdfa") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 374 | self.assertEquals(b"asdfasdfa", raw._write_stack[0]) |
| 375 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 376 | bufio.write(b"asdfasdfasdf") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 377 | self.assertEquals(b"asdfasdfasdf", raw._write_stack[1]) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 378 | bufio.write(b"asdfasdfasdf") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 379 | self.assertEquals(b"dfasdfasdf", raw._write_stack[2]) |
| 380 | self.assertEquals(b"asdfasdfasdf", raw._write_stack[3]) |
| 381 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 382 | bufio.write(b"asdfasdfasdf") |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 383 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 384 | # XXX I don't like this test. It relies too heavily on how the |
| 385 | # algorithm actually works, which we might change. Refactor |
| 386 | # later. |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 387 | |
| 388 | def testFileno(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 389 | rawio = MockRawIO((b"abc", b"d", b"efg")) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 390 | bufio = io.BufferedWriter(rawio) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 391 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 392 | self.assertEquals(42, bufio.fileno()) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 393 | |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 394 | def testFlush(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 395 | writer = MockRawIO() |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 396 | bufio = io.BufferedWriter(writer, 8) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 397 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 398 | bufio.write(b"abc") |
| 399 | bufio.flush() |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 400 | |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 401 | self.assertEquals(b"abc", writer._write_stack[0]) |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 402 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 403 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 404 | class BufferedRWPairTest(unittest.TestCase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 405 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 406 | def testRWPair(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 407 | r = MockRawIO(()) |
| 408 | w = MockRawIO() |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 409 | pair = io.BufferedRWPair(r, w) |
| 410 | |
| 411 | # XXX need implementation |
| 412 | |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 413 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 414 | class BufferedRandomTest(unittest.TestCase): |
Guido van Rossum | a9e2024 | 2007-03-08 00:43:48 +0000 | [diff] [blame] | 415 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 416 | def testReadAndWrite(self): |
Guido van Rossum | 53807da | 2007-04-10 19:01:47 +0000 | [diff] [blame] | 417 | raw = MockRawIO((b"asdf", b"ghjk")) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 418 | rw = io.BufferedRandom(raw, 8, 12) |
| 419 | |
| 420 | self.assertEqual(b"as", rw.read(2)) |
| 421 | rw.write(b"ddd") |
| 422 | rw.write(b"eee") |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 423 | self.assertFalse(raw._write_stack) # Buffer writes |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 424 | self.assertEqual(b"ghjk", rw.read()) # This read forces write flush |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 425 | self.assertEquals(b"dddeee", raw._write_stack[0]) |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 426 | |
| 427 | def testSeekAndTell(self): |
| 428 | raw = io.BytesIO(b"asdfghjkl") |
| 429 | rw = io.BufferedRandom(raw) |
| 430 | |
| 431 | self.assertEquals(b"as", rw.read(2)) |
| 432 | self.assertEquals(2, rw.tell()) |
| 433 | rw.seek(0, 0) |
| 434 | self.assertEquals(b"asdf", rw.read(4)) |
| 435 | |
| 436 | rw.write(b"asdf") |
| 437 | rw.seek(0, 0) |
| 438 | self.assertEquals(b"asdfasdfl", rw.read()) |
| 439 | self.assertEquals(9, rw.tell()) |
| 440 | rw.seek(-4, 2) |
| 441 | self.assertEquals(5, rw.tell()) |
| 442 | rw.seek(2, 1) |
| 443 | self.assertEquals(7, rw.tell()) |
| 444 | self.assertEquals(b"fl", rw.read(11)) |
| 445 | |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 446 | |
| 447 | class TextIOWrapperTest(unittest.TestCase): |
| 448 | def testNewlines(self): |
| 449 | input_lines = [ "unix\n", "windows\r\n", "os9\r", "last\n", "nonl" ] |
| 450 | |
| 451 | tests = [ |
| 452 | [ None, [ 'unix\n', 'windows\n', 'os9\n', 'last\n', 'nonl' ] ], |
| 453 | [ '\n', input_lines ], |
| 454 | [ '\r\n', input_lines ], |
| 455 | ] |
| 456 | |
| 457 | encodings = ('utf-8', 'bz2') |
| 458 | |
| 459 | # Try a range of pad sizes to test the case where \r is the last |
| 460 | # character in TextIOWrapper._pending_line. |
| 461 | for encoding in encodings: |
| 462 | for do_reads in (False, True): |
| 463 | for padlen in chain(range(10), range(50, 60)): |
| 464 | pad = '.' * padlen |
| 465 | data_lines = [ pad + line for line in input_lines ] |
| 466 | # XXX: str.encode() should return bytes |
| 467 | data = bytes(''.join(data_lines).encode(encoding)) |
| 468 | |
| 469 | for newline, exp_line_ends in tests: |
| 470 | exp_lines = [ pad + line for line in exp_line_ends ] |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 471 | bufio = io.BufferedReader(io.BytesIO(data)) |
| 472 | textio = io.TextIOWrapper(bufio, newline=newline, |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 473 | encoding=encoding) |
| 474 | if do_reads: |
| 475 | got_lines = [] |
| 476 | while True: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 477 | c2 = textio.read(2) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 478 | if c2 == '': |
| 479 | break |
| 480 | self.assertEquals(len(c2), 2) |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 481 | got_lines.append(c2 + textio.readline()) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 482 | else: |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 483 | got_lines = list(textio) |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 484 | |
| 485 | for got_line, exp_line in zip(got_lines, exp_lines): |
| 486 | self.assertEquals(got_line, exp_line) |
| 487 | self.assertEquals(len(got_lines), len(exp_lines)) |
| 488 | |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 489 | # XXX Tests for open() |
Guido van Rossum | 68bbcd2 | 2007-02-27 17:19:33 +0000 | [diff] [blame] | 490 | |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 491 | def test_main(): |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 492 | test_support.run_unittest(IOTest, BytesIOTest, StringIOTest, |
| 493 | BufferedReaderTest, |
Guido van Rossum | 01a2752 | 2007-03-07 01:00:12 +0000 | [diff] [blame] | 494 | BufferedWriterTest, BufferedRWPairTest, |
Guido van Rossum | 78892e4 | 2007-04-06 17:31:18 +0000 | [diff] [blame] | 495 | BufferedRandomTest, TextIOWrapperTest) |
Guido van Rossum | 28524c7 | 2007-02-27 05:47:44 +0000 | [diff] [blame] | 496 | |
| 497 | if __name__ == "__main__": |
Guido van Rossum | 76c5d4d | 2007-04-06 19:10:29 +0000 | [diff] [blame] | 498 | unittest.main() |