| 4710c53d |
1 | # Adapted from test_file.py by Daniel Stutzbach\r |
| 2 | \r |
| 3 | from __future__ import unicode_literals\r |
| 4 | \r |
| 5 | import sys\r |
| 6 | import os\r |
| 7 | import errno\r |
| 8 | import unittest\r |
| 9 | from array import array\r |
| 10 | from weakref import proxy\r |
| 11 | from functools import wraps\r |
| 12 | \r |
| 13 | from test.test_support import TESTFN, check_warnings, run_unittest, make_bad_fd\r |
| 14 | from test.test_support import py3k_bytes as bytes\r |
| 15 | from test.script_helper import run_python\r |
| 16 | \r |
| 17 | from _io import FileIO as _FileIO\r |
| 18 | \r |
| 19 | class AutoFileTests(unittest.TestCase):\r |
| 20 | # file tests for which a test file is automatically set up\r |
| 21 | \r |
| 22 | def setUp(self):\r |
| 23 | self.f = _FileIO(TESTFN, 'w')\r |
| 24 | \r |
| 25 | def tearDown(self):\r |
| 26 | if self.f:\r |
| 27 | self.f.close()\r |
| 28 | os.remove(TESTFN)\r |
| 29 | \r |
| 30 | def testWeakRefs(self):\r |
| 31 | # verify weak references\r |
| 32 | p = proxy(self.f)\r |
| 33 | p.write(bytes(range(10)))\r |
| 34 | self.assertEqual(self.f.tell(), p.tell())\r |
| 35 | self.f.close()\r |
| 36 | self.f = None\r |
| 37 | self.assertRaises(ReferenceError, getattr, p, 'tell')\r |
| 38 | \r |
| 39 | def testSeekTell(self):\r |
| 40 | self.f.write(bytes(range(20)))\r |
| 41 | self.assertEqual(self.f.tell(), 20)\r |
| 42 | self.f.seek(0)\r |
| 43 | self.assertEqual(self.f.tell(), 0)\r |
| 44 | self.f.seek(10)\r |
| 45 | self.assertEqual(self.f.tell(), 10)\r |
| 46 | self.f.seek(5, 1)\r |
| 47 | self.assertEqual(self.f.tell(), 15)\r |
| 48 | self.f.seek(-5, 1)\r |
| 49 | self.assertEqual(self.f.tell(), 10)\r |
| 50 | self.f.seek(-5, 2)\r |
| 51 | self.assertEqual(self.f.tell(), 15)\r |
| 52 | \r |
| 53 | def testAttributes(self):\r |
| 54 | # verify expected attributes exist\r |
| 55 | f = self.f\r |
| 56 | \r |
| 57 | self.assertEqual(f.mode, "wb")\r |
| 58 | self.assertEqual(f.closed, False)\r |
| 59 | \r |
| 60 | # verify the attributes are readonly\r |
| 61 | for attr in 'mode', 'closed':\r |
| 62 | self.assertRaises((AttributeError, TypeError),\r |
| 63 | setattr, f, attr, 'oops')\r |
| 64 | \r |
| 65 | def testReadinto(self):\r |
| 66 | # verify readinto\r |
| 67 | self.f.write(b"\x01\x02")\r |
| 68 | self.f.close()\r |
| 69 | a = array(b'b', b'x'*10)\r |
| 70 | self.f = _FileIO(TESTFN, 'r')\r |
| 71 | n = self.f.readinto(a)\r |
| 72 | self.assertEqual(array(b'b', [1, 2]), a[:n])\r |
| 73 | \r |
| 74 | def test_none_args(self):\r |
| 75 | self.f.write(b"hi\nbye\nabc")\r |
| 76 | self.f.close()\r |
| 77 | self.f = _FileIO(TESTFN, 'r')\r |
| 78 | self.assertEqual(self.f.read(None), b"hi\nbye\nabc")\r |
| 79 | self.f.seek(0)\r |
| 80 | self.assertEqual(self.f.readline(None), b"hi\n")\r |
| 81 | self.assertEqual(self.f.readlines(None), [b"bye\n", b"abc"])\r |
| 82 | \r |
| 83 | def testRepr(self):\r |
| 84 | self.assertEqual(repr(self.f), "<_io.FileIO name=%r mode='%s'>"\r |
| 85 | % (self.f.name, self.f.mode))\r |
| 86 | del self.f.name\r |
| 87 | self.assertEqual(repr(self.f), "<_io.FileIO fd=%r mode='%s'>"\r |
| 88 | % (self.f.fileno(), self.f.mode))\r |
| 89 | self.f.close()\r |
| 90 | self.assertEqual(repr(self.f), "<_io.FileIO [closed]>")\r |
| 91 | \r |
| 92 | def testErrors(self):\r |
| 93 | f = self.f\r |
| 94 | self.assertTrue(not f.isatty())\r |
| 95 | self.assertTrue(not f.closed)\r |
| 96 | #self.assertEqual(f.name, TESTFN)\r |
| 97 | self.assertRaises(ValueError, f.read, 10) # Open for reading\r |
| 98 | f.close()\r |
| 99 | self.assertTrue(f.closed)\r |
| 100 | f = _FileIO(TESTFN, 'r')\r |
| 101 | self.assertRaises(TypeError, f.readinto, "")\r |
| 102 | self.assertTrue(not f.closed)\r |
| 103 | f.close()\r |
| 104 | self.assertTrue(f.closed)\r |
| 105 | \r |
| 106 | def testMethods(self):\r |
| 107 | methods = ['fileno', 'isatty', 'read', 'readinto',\r |
| 108 | 'seek', 'tell', 'truncate', 'write', 'seekable',\r |
| 109 | 'readable', 'writable']\r |
| 110 | if sys.platform.startswith('atheos'):\r |
| 111 | methods.remove('truncate')\r |
| 112 | \r |
| 113 | self.f.close()\r |
| 114 | self.assertTrue(self.f.closed)\r |
| 115 | \r |
| 116 | for methodname in methods:\r |
| 117 | method = getattr(self.f, methodname)\r |
| 118 | # should raise on closed file\r |
| 119 | self.assertRaises(ValueError, method)\r |
| 120 | \r |
| 121 | def testOpendir(self):\r |
| 122 | # Issue 3703: opening a directory should fill the errno\r |
| 123 | # Windows always returns "[Errno 13]: Permission denied\r |
| 124 | # Unix calls dircheck() and returns "[Errno 21]: Is a directory"\r |
| 125 | try:\r |
| 126 | _FileIO('.', 'r')\r |
| 127 | except IOError as e:\r |
| 128 | self.assertNotEqual(e.errno, 0)\r |
| 129 | self.assertEqual(e.filename, ".")\r |
| 130 | else:\r |
| 131 | self.fail("Should have raised IOError")\r |
| 132 | \r |
| 133 | #A set of functions testing that we get expected behaviour if someone has\r |
| 134 | #manually closed the internal file descriptor. First, a decorator:\r |
| 135 | def ClosedFD(func):\r |
| 136 | @wraps(func)\r |
| 137 | def wrapper(self):\r |
| 138 | #forcibly close the fd before invoking the problem function\r |
| 139 | f = self.f\r |
| 140 | os.close(f.fileno())\r |
| 141 | try:\r |
| 142 | func(self, f)\r |
| 143 | finally:\r |
| 144 | try:\r |
| 145 | self.f.close()\r |
| 146 | except IOError:\r |
| 147 | pass\r |
| 148 | return wrapper\r |
| 149 | \r |
| 150 | def ClosedFDRaises(func):\r |
| 151 | @wraps(func)\r |
| 152 | def wrapper(self):\r |
| 153 | #forcibly close the fd before invoking the problem function\r |
| 154 | f = self.f\r |
| 155 | os.close(f.fileno())\r |
| 156 | try:\r |
| 157 | func(self, f)\r |
| 158 | except IOError as e:\r |
| 159 | self.assertEqual(e.errno, errno.EBADF)\r |
| 160 | else:\r |
| 161 | self.fail("Should have raised IOError")\r |
| 162 | finally:\r |
| 163 | try:\r |
| 164 | self.f.close()\r |
| 165 | except IOError:\r |
| 166 | pass\r |
| 167 | return wrapper\r |
| 168 | \r |
| 169 | @ClosedFDRaises\r |
| 170 | def testErrnoOnClose(self, f):\r |
| 171 | f.close()\r |
| 172 | \r |
| 173 | @ClosedFDRaises\r |
| 174 | def testErrnoOnClosedWrite(self, f):\r |
| 175 | f.write('a')\r |
| 176 | \r |
| 177 | @ClosedFDRaises\r |
| 178 | def testErrnoOnClosedSeek(self, f):\r |
| 179 | f.seek(0)\r |
| 180 | \r |
| 181 | @ClosedFDRaises\r |
| 182 | def testErrnoOnClosedTell(self, f):\r |
| 183 | f.tell()\r |
| 184 | \r |
| 185 | @ClosedFDRaises\r |
| 186 | def testErrnoOnClosedTruncate(self, f):\r |
| 187 | f.truncate(0)\r |
| 188 | \r |
| 189 | @ClosedFD\r |
| 190 | def testErrnoOnClosedSeekable(self, f):\r |
| 191 | f.seekable()\r |
| 192 | \r |
| 193 | @ClosedFD\r |
| 194 | def testErrnoOnClosedReadable(self, f):\r |
| 195 | f.readable()\r |
| 196 | \r |
| 197 | @ClosedFD\r |
| 198 | def testErrnoOnClosedWritable(self, f):\r |
| 199 | f.writable()\r |
| 200 | \r |
| 201 | @ClosedFD\r |
| 202 | def testErrnoOnClosedFileno(self, f):\r |
| 203 | f.fileno()\r |
| 204 | \r |
| 205 | @ClosedFD\r |
| 206 | def testErrnoOnClosedIsatty(self, f):\r |
| 207 | self.assertEqual(f.isatty(), False)\r |
| 208 | \r |
| 209 | def ReopenForRead(self):\r |
| 210 | try:\r |
| 211 | self.f.close()\r |
| 212 | except IOError:\r |
| 213 | pass\r |
| 214 | self.f = _FileIO(TESTFN, 'r')\r |
| 215 | os.close(self.f.fileno())\r |
| 216 | return self.f\r |
| 217 | \r |
| 218 | @ClosedFDRaises\r |
| 219 | def testErrnoOnClosedRead(self, f):\r |
| 220 | f = self.ReopenForRead()\r |
| 221 | f.read(1)\r |
| 222 | \r |
| 223 | @ClosedFDRaises\r |
| 224 | def testErrnoOnClosedReadall(self, f):\r |
| 225 | f = self.ReopenForRead()\r |
| 226 | f.readall()\r |
| 227 | \r |
| 228 | @ClosedFDRaises\r |
| 229 | def testErrnoOnClosedReadinto(self, f):\r |
| 230 | f = self.ReopenForRead()\r |
| 231 | a = array(b'b', b'x'*10)\r |
| 232 | f.readinto(a)\r |
| 233 | \r |
| 234 | class OtherFileTests(unittest.TestCase):\r |
| 235 | \r |
| 236 | def testAbles(self):\r |
| 237 | try:\r |
| 238 | f = _FileIO(TESTFN, "w")\r |
| 239 | self.assertEqual(f.readable(), False)\r |
| 240 | self.assertEqual(f.writable(), True)\r |
| 241 | self.assertEqual(f.seekable(), True)\r |
| 242 | f.close()\r |
| 243 | \r |
| 244 | f = _FileIO(TESTFN, "r")\r |
| 245 | self.assertEqual(f.readable(), True)\r |
| 246 | self.assertEqual(f.writable(), False)\r |
| 247 | self.assertEqual(f.seekable(), True)\r |
| 248 | f.close()\r |
| 249 | \r |
| 250 | f = _FileIO(TESTFN, "a+")\r |
| 251 | self.assertEqual(f.readable(), True)\r |
| 252 | self.assertEqual(f.writable(), True)\r |
| 253 | self.assertEqual(f.seekable(), True)\r |
| 254 | self.assertEqual(f.isatty(), False)\r |
| 255 | f.close()\r |
| 256 | \r |
| 257 | if sys.platform != "win32":\r |
| 258 | try:\r |
| 259 | f = _FileIO("/dev/tty", "a")\r |
| 260 | except EnvironmentError:\r |
| 261 | # When run in a cron job there just aren't any\r |
| 262 | # ttys, so skip the test. This also handles other\r |
| 263 | # OS'es that don't support /dev/tty.\r |
| 264 | pass\r |
| 265 | else:\r |
| 266 | self.assertEqual(f.readable(), False)\r |
| 267 | self.assertEqual(f.writable(), True)\r |
| 268 | if sys.platform != "darwin" and \\r |
| 269 | 'bsd' not in sys.platform and \\r |
| 270 | not sys.platform.startswith('sunos'):\r |
| 271 | # Somehow /dev/tty appears seekable on some BSDs\r |
| 272 | self.assertEqual(f.seekable(), False)\r |
| 273 | self.assertEqual(f.isatty(), True)\r |
| 274 | f.close()\r |
| 275 | finally:\r |
| 276 | os.unlink(TESTFN)\r |
| 277 | \r |
| 278 | def testModeStrings(self):\r |
| 279 | # check invalid mode strings\r |
| 280 | for mode in ("", "aU", "wU+", "rw", "rt"):\r |
| 281 | try:\r |
| 282 | f = _FileIO(TESTFN, mode)\r |
| 283 | except ValueError:\r |
| 284 | pass\r |
| 285 | else:\r |
| 286 | f.close()\r |
| 287 | self.fail('%r is an invalid file mode' % mode)\r |
| 288 | \r |
| 289 | def testUnicodeOpen(self):\r |
| 290 | # verify repr works for unicode too\r |
| 291 | f = _FileIO(str(TESTFN), "w")\r |
| 292 | f.close()\r |
| 293 | os.unlink(TESTFN)\r |
| 294 | \r |
| 295 | def testBytesOpen(self):\r |
| 296 | # Opening a bytes filename\r |
| 297 | try:\r |
| 298 | fn = TESTFN.encode("ascii")\r |
| 299 | except UnicodeEncodeError:\r |
| 300 | # Skip test\r |
| 301 | return\r |
| 302 | f = _FileIO(fn, "w")\r |
| 303 | try:\r |
| 304 | f.write(b"abc")\r |
| 305 | f.close()\r |
| 306 | with open(TESTFN, "rb") as f:\r |
| 307 | self.assertEqual(f.read(), b"abc")\r |
| 308 | finally:\r |
| 309 | os.unlink(TESTFN)\r |
| 310 | \r |
| 311 | def testInvalidFd(self):\r |
| 312 | self.assertRaises(ValueError, _FileIO, -10)\r |
| 313 | self.assertRaises(OSError, _FileIO, make_bad_fd())\r |
| 314 | if sys.platform == 'win32':\r |
| 315 | import msvcrt\r |
| 316 | self.assertRaises(IOError, msvcrt.get_osfhandle, make_bad_fd())\r |
| 317 | \r |
| 318 | def testBadModeArgument(self):\r |
| 319 | # verify that we get a sensible error message for bad mode argument\r |
| 320 | bad_mode = "qwerty"\r |
| 321 | try:\r |
| 322 | f = _FileIO(TESTFN, bad_mode)\r |
| 323 | except ValueError as msg:\r |
| 324 | if msg.args[0] != 0:\r |
| 325 | s = str(msg)\r |
| 326 | if TESTFN in s or bad_mode not in s:\r |
| 327 | self.fail("bad error message for invalid mode: %s" % s)\r |
| 328 | # if msg.args[0] == 0, we're probably on Windows where there may be\r |
| 329 | # no obvious way to discover why open() failed.\r |
| 330 | else:\r |
| 331 | f.close()\r |
| 332 | self.fail("no error for invalid mode: %s" % bad_mode)\r |
| 333 | \r |
| 334 | def testTruncate(self):\r |
| 335 | f = _FileIO(TESTFN, 'w')\r |
| 336 | f.write(bytes(bytearray(range(10))))\r |
| 337 | self.assertEqual(f.tell(), 10)\r |
| 338 | f.truncate(5)\r |
| 339 | self.assertEqual(f.tell(), 10)\r |
| 340 | self.assertEqual(f.seek(0, os.SEEK_END), 5)\r |
| 341 | f.truncate(15)\r |
| 342 | self.assertEqual(f.tell(), 5)\r |
| 343 | self.assertEqual(f.seek(0, os.SEEK_END), 15)\r |
| 344 | f.close()\r |
| 345 | \r |
| 346 | def testTruncateOnWindows(self):\r |
| 347 | def bug801631():\r |
| 348 | # SF bug <http://www.python.org/sf/801631>\r |
| 349 | # "file.truncate fault on windows"\r |
| 350 | f = _FileIO(TESTFN, 'w')\r |
| 351 | f.write(bytes(range(11)))\r |
| 352 | f.close()\r |
| 353 | \r |
| 354 | f = _FileIO(TESTFN,'r+')\r |
| 355 | data = f.read(5)\r |
| 356 | if data != bytes(range(5)):\r |
| 357 | self.fail("Read on file opened for update failed %r" % data)\r |
| 358 | if f.tell() != 5:\r |
| 359 | self.fail("File pos after read wrong %d" % f.tell())\r |
| 360 | \r |
| 361 | f.truncate()\r |
| 362 | if f.tell() != 5:\r |
| 363 | self.fail("File pos after ftruncate wrong %d" % f.tell())\r |
| 364 | \r |
| 365 | f.close()\r |
| 366 | size = os.path.getsize(TESTFN)\r |
| 367 | if size != 5:\r |
| 368 | self.fail("File size after ftruncate wrong %d" % size)\r |
| 369 | \r |
| 370 | try:\r |
| 371 | bug801631()\r |
| 372 | finally:\r |
| 373 | os.unlink(TESTFN)\r |
| 374 | \r |
| 375 | def testAppend(self):\r |
| 376 | try:\r |
| 377 | f = open(TESTFN, 'wb')\r |
| 378 | f.write(b'spam')\r |
| 379 | f.close()\r |
| 380 | f = open(TESTFN, 'ab')\r |
| 381 | f.write(b'eggs')\r |
| 382 | f.close()\r |
| 383 | f = open(TESTFN, 'rb')\r |
| 384 | d = f.read()\r |
| 385 | f.close()\r |
| 386 | self.assertEqual(d, b'spameggs')\r |
| 387 | finally:\r |
| 388 | try:\r |
| 389 | os.unlink(TESTFN)\r |
| 390 | except:\r |
| 391 | pass\r |
| 392 | \r |
| 393 | def testInvalidInit(self):\r |
| 394 | self.assertRaises(TypeError, _FileIO, "1", 0, 0)\r |
| 395 | \r |
| 396 | def testWarnings(self):\r |
| 397 | with check_warnings(quiet=True) as w:\r |
| 398 | self.assertEqual(w.warnings, [])\r |
| 399 | self.assertRaises(TypeError, _FileIO, [])\r |
| 400 | self.assertEqual(w.warnings, [])\r |
| 401 | self.assertRaises(ValueError, _FileIO, "/some/invalid/name", "rt")\r |
| 402 | self.assertEqual(w.warnings, [])\r |
| 403 | \r |
| 404 | def test_surrogates(self):\r |
| 405 | # Issue #8438: try to open a filename containing surrogates.\r |
| 406 | # It should either fail because the file doesn't exist or the filename\r |
| 407 | # can't be represented using the filesystem encoding, but not because\r |
| 408 | # of a LookupError for the error handler "surrogateescape".\r |
| 409 | filename = u'\udc80.txt'\r |
| 410 | try:\r |
| 411 | with _FileIO(filename):\r |
| 412 | pass\r |
| 413 | except (UnicodeEncodeError, IOError):\r |
| 414 | pass\r |
| 415 | # Spawn a separate Python process with a different "file system\r |
| 416 | # default encoding", to exercise this further.\r |
| 417 | env = dict(os.environ)\r |
| 418 | env[b'LC_CTYPE'] = b'C'\r |
| 419 | _, out = run_python('-c', 'import _io; _io.FileIO(%r)' % filename, env=env)\r |
| 420 | if ('UnicodeEncodeError' not in out and\r |
| 421 | 'IOError: [Errno 2] No such file or directory' not in out):\r |
| 422 | self.fail('Bad output: %r' % out)\r |
| 423 | \r |
| 424 | def test_main():\r |
| 425 | # Historically, these tests have been sloppy about removing TESTFN.\r |
| 426 | # So get rid of it no matter what.\r |
| 427 | try:\r |
| 428 | run_unittest(AutoFileTests, OtherFileTests)\r |
| 429 | finally:\r |
| 430 | if os.path.exists(TESTFN):\r |
| 431 | os.unlink(TESTFN)\r |
| 432 | \r |
| 433 | if __name__ == '__main__':\r |
| 434 | test_main()\r |
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