Mercurial > cpython-lru_cache-weakref
annotate Lib/test/test_fileio.py @ 54294:dba767bc3155 legacy-trunk
remove mention of old ctypes version
| author | Benjamin Peterson <benjamin@python.org> |
|---|---|
| date | Sat, 23 May 2009 20:59:09 +0000 |
| parents | 9fd1d54f617c |
| children | 0bd616dfc977 760a710eb6c1 |
| rev | line source |
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| 48016 | 1 # Adapted from test_file.py by Daniel Stutzbach |
| 2 #from __future__ import unicode_literals | |
| 3 | |
| 4 import sys | |
| 5 import os | |
| 6 import unittest | |
| 7 from array import array | |
| 8 from weakref import proxy | |
| 9 | |
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10 from test.test_support import (TESTFN, findfile, check_warnings, run_unittest, |
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11 make_bad_fd) |
| 48016 | 12 from UserList import UserList |
| 13 | |
| 14 import _fileio | |
| 15 | |
| 16 class AutoFileTests(unittest.TestCase): | |
| 17 # file tests for which a test file is automatically set up | |
| 18 | |
| 19 def setUp(self): | |
| 20 self.f = _fileio._FileIO(TESTFN, 'w') | |
| 21 | |
| 22 def tearDown(self): | |
| 23 if self.f: | |
| 24 self.f.close() | |
| 25 os.remove(TESTFN) | |
| 26 | |
| 27 def testWeakRefs(self): | |
| 28 # verify weak references | |
| 29 p = proxy(self.f) | |
| 30 p.write(bytes(range(10))) | |
| 31 self.assertEquals(self.f.tell(), p.tell()) | |
| 32 self.f.close() | |
| 33 self.f = None | |
| 34 self.assertRaises(ReferenceError, getattr, p, 'tell') | |
| 35 | |
| 36 def testSeekTell(self): | |
| 37 self.f.write(bytes(bytearray(range(20)))) | |
| 38 self.assertEquals(self.f.tell(), 20) | |
| 39 self.f.seek(0) | |
| 40 self.assertEquals(self.f.tell(), 0) | |
| 41 self.f.seek(10) | |
| 42 self.assertEquals(self.f.tell(), 10) | |
| 43 self.f.seek(5, 1) | |
| 44 self.assertEquals(self.f.tell(), 15) | |
| 45 self.f.seek(-5, 1) | |
| 46 self.assertEquals(self.f.tell(), 10) | |
| 47 self.f.seek(-5, 2) | |
| 48 self.assertEquals(self.f.tell(), 15) | |
| 49 | |
| 50 def testAttributes(self): | |
| 51 # verify expected attributes exist | |
| 52 f = self.f | |
| 53 | |
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54 self.assertEquals(f.mode, "wb") |
| 48016 | 55 self.assertEquals(f.closed, False) |
| 56 | |
| 57 # verify the attributes are readonly | |
| 58 for attr in 'mode', 'closed': | |
| 59 self.assertRaises((AttributeError, TypeError), | |
| 60 setattr, f, attr, 'oops') | |
| 61 | |
| 62 def testReadinto(self): | |
| 63 # verify readinto | |
| 64 self.f.write(bytes(bytearray([1, 2]))) | |
| 65 self.f.close() | |
| 66 a = array('b', b'x'*10) | |
| 67 self.f = _fileio._FileIO(TESTFN, 'r') | |
| 68 n = self.f.readinto(a) | |
| 69 self.assertEquals(array('b', [1, 2]), a[:n]) | |
| 70 | |
| 71 def testRepr(self): | |
| 72 self.assertEquals(repr(self.f), | |
| 73 "_fileio._FileIO(%d, %s)" % (self.f.fileno(), | |
| 74 repr(self.f.mode))) | |
| 75 | |
| 76 def testErrors(self): | |
| 77 f = self.f | |
| 78 self.assert_(not f.isatty()) | |
| 79 self.assert_(not f.closed) | |
| 80 #self.assertEquals(f.name, TESTFN) | |
| 81 self.assertRaises(ValueError, f.read, 10) # Open for reading | |
| 82 f.close() | |
| 83 self.assert_(f.closed) | |
| 84 f = _fileio._FileIO(TESTFN, 'r') | |
| 85 self.assertRaises(TypeError, f.readinto, "") | |
| 86 self.assert_(not f.closed) | |
| 87 f.close() | |
| 88 self.assert_(f.closed) | |
| 89 | |
| 90 def testMethods(self): | |
| 91 methods = ['fileno', 'isatty', 'read', 'readinto', | |
| 92 'seek', 'tell', 'truncate', 'write', 'seekable', | |
| 93 'readable', 'writable'] | |
| 94 if sys.platform.startswith('atheos'): | |
| 95 methods.remove('truncate') | |
| 96 | |
| 97 self.f.close() | |
| 98 self.assert_(self.f.closed) | |
| 99 | |
| 100 for methodname in methods: | |
| 101 method = getattr(self.f, methodname) | |
| 102 # should raise on closed file | |
| 103 self.assertRaises(ValueError, method) | |
| 104 | |
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105 def testOpendir(self): |
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106 # Issue 3703: opening a directory should fill the errno |
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107 # Windows always returns "[Errno 13]: Permission denied |
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108 # Unix calls dircheck() and returns "[Errno 21]: Is a directory" |
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109 try: |
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110 _fileio._FileIO('.', 'r') |
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111 except IOError as e: |
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112 self.assertNotEqual(e.errno, 0) |
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113 self.assertEqual(e.filename, ".") |
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114 else: |
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115 self.fail("Should have raised IOError") |
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116 |
| 48016 | 117 |
| 118 class OtherFileTests(unittest.TestCase): | |
| 119 | |
| 120 def testAbles(self): | |
| 121 try: | |
| 122 f = _fileio._FileIO(TESTFN, "w") | |
| 123 self.assertEquals(f.readable(), False) | |
| 124 self.assertEquals(f.writable(), True) | |
| 125 self.assertEquals(f.seekable(), True) | |
| 126 f.close() | |
| 127 | |
| 128 f = _fileio._FileIO(TESTFN, "r") | |
| 129 self.assertEquals(f.readable(), True) | |
| 130 self.assertEquals(f.writable(), False) | |
| 131 self.assertEquals(f.seekable(), True) | |
| 132 f.close() | |
| 133 | |
| 134 f = _fileio._FileIO(TESTFN, "a+") | |
| 135 self.assertEquals(f.readable(), True) | |
| 136 self.assertEquals(f.writable(), True) | |
| 137 self.assertEquals(f.seekable(), True) | |
| 138 self.assertEquals(f.isatty(), False) | |
| 139 f.close() | |
| 140 | |
| 141 if sys.platform != "win32": | |
| 142 try: | |
| 143 f = _fileio._FileIO("/dev/tty", "a") | |
| 144 except EnvironmentError: | |
| 145 # When run in a cron job there just aren't any | |
| 146 # ttys, so skip the test. This also handles other | |
| 147 # OS'es that don't support /dev/tty. | |
| 148 pass | |
| 149 else: | |
| 150 f = _fileio._FileIO("/dev/tty", "a") | |
| 151 self.assertEquals(f.readable(), False) | |
| 152 self.assertEquals(f.writable(), True) | |
| 153 if sys.platform != "darwin" and \ | |
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154 'bsd' not in sys.platform and \ |
| 48016 | 155 not sys.platform.startswith('sunos'): |
| 156 # Somehow /dev/tty appears seekable on some BSDs | |
| 157 self.assertEquals(f.seekable(), False) | |
| 158 self.assertEquals(f.isatty(), True) | |
| 159 f.close() | |
| 160 finally: | |
| 161 os.unlink(TESTFN) | |
| 162 | |
| 163 def testModeStrings(self): | |
| 164 # check invalid mode strings | |
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165 for mode in ("", "aU", "wU+", "rw", "rt"): |
| 48016 | 166 try: |
| 167 f = _fileio._FileIO(TESTFN, mode) | |
| 168 except ValueError: | |
| 169 pass | |
| 170 else: | |
| 171 f.close() | |
| 172 self.fail('%r is an invalid file mode' % mode) | |
| 173 | |
| 174 def testUnicodeOpen(self): | |
| 175 # verify repr works for unicode too | |
| 176 f = _fileio._FileIO(str(TESTFN), "w") | |
| 177 f.close() | |
| 178 os.unlink(TESTFN) | |
| 179 | |
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180 def testInvalidFd(self): |
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181 self.assertRaises(ValueError, _fileio._FileIO, -10) |
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182 self.assertRaises(OSError, _fileio._FileIO, make_bad_fd()) |
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183 |
| 48016 | 184 def testBadModeArgument(self): |
| 185 # verify that we get a sensible error message for bad mode argument | |
| 186 bad_mode = "qwerty" | |
| 187 try: | |
| 188 f = _fileio._FileIO(TESTFN, bad_mode) | |
| 189 except ValueError as msg: | |
| 190 if msg.args[0] != 0: | |
| 191 s = str(msg) | |
| 192 if s.find(TESTFN) != -1 or s.find(bad_mode) == -1: | |
| 193 self.fail("bad error message for invalid mode: %s" % s) | |
| 194 # if msg.args[0] == 0, we're probably on Windows where there may be | |
| 195 # no obvious way to discover why open() failed. | |
| 196 else: | |
| 197 f.close() | |
| 198 self.fail("no error for invalid mode: %s" % bad_mode) | |
| 199 | |
| 200 def testTruncateOnWindows(self): | |
| 201 def bug801631(): | |
| 202 # SF bug <http://www.python.org/sf/801631> | |
| 203 # "file.truncate fault on windows" | |
| 204 f = _fileio._FileIO(TESTFN, 'w') | |
| 205 f.write(bytes(bytearray(range(11)))) | |
| 206 f.close() | |
| 207 | |
| 208 f = _fileio._FileIO(TESTFN,'r+') | |
| 209 data = f.read(5) | |
| 210 if data != bytes(bytearray(range(5))): | |
| 211 self.fail("Read on file opened for update failed %r" % data) | |
| 212 if f.tell() != 5: | |
| 213 self.fail("File pos after read wrong %d" % f.tell()) | |
| 214 | |
| 215 f.truncate() | |
| 216 if f.tell() != 5: | |
| 217 self.fail("File pos after ftruncate wrong %d" % f.tell()) | |
| 218 | |
| 219 f.close() | |
| 220 size = os.path.getsize(TESTFN) | |
| 221 if size != 5: | |
| 222 self.fail("File size after ftruncate wrong %d" % size) | |
| 223 | |
| 224 try: | |
| 225 bug801631() | |
| 226 finally: | |
| 227 os.unlink(TESTFN) | |
| 228 | |
| 229 def testAppend(self): | |
| 230 try: | |
| 231 f = open(TESTFN, 'wb') | |
| 232 f.write(b'spam') | |
| 233 f.close() | |
| 234 f = open(TESTFN, 'ab') | |
| 235 f.write(b'eggs') | |
| 236 f.close() | |
| 237 f = open(TESTFN, 'rb') | |
| 238 d = f.read() | |
| 239 f.close() | |
| 240 self.assertEqual(d, b'spameggs') | |
| 241 finally: | |
| 242 try: | |
| 243 os.unlink(TESTFN) | |
| 244 except: | |
| 245 pass | |
| 246 | |
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247 def testInvalidInit(self): |
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248 self.assertRaises(TypeError, _fileio._FileIO, "1", 0, 0) |
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249 |
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250 def testWarnings(self): |
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251 with check_warnings() as w: |
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252 self.assertEqual(w.warnings, []) |
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253 self.assertRaises(TypeError, _fileio._FileIO, []) |
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254 self.assertEqual(w.warnings, []) |
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255 self.assertRaises(ValueError, _fileio._FileIO, "/some/invalid/name", "rt") |
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256 self.assertEqual(w.warnings, []) |
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257 |
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258 |
| 48016 | 259 def test_main(): |
| 260 # Historically, these tests have been sloppy about removing TESTFN. | |
| 261 # So get rid of it no matter what. | |
| 262 try: | |
| 263 run_unittest(AutoFileTests, OtherFileTests) | |
| 264 finally: | |
| 265 if os.path.exists(TESTFN): | |
| 266 os.unlink(TESTFN) | |
| 267 | |
| 268 if __name__ == '__main__': | |
| 269 test_main() |