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