Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_unicode_file.py @ 79675:c0a2294de787 2.7

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Issue #16199: Backport 2to3 typo fix from 3.2.
author Chris Jerdonek <chris.jerdonek@gmail.com>
date Thu, 11 Oct 2012 16:15:46 -0700
parents 457aa8da490a
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # Test some Unicode file name semantics
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2 # We dont test many operations on files other than
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3 # that their names can be used with Unicode characters.
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4 import os, glob, time, shutil
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5 import unicodedata
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6
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7 import unittest
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8 from test.test_support import run_unittest, TESTFN_UNICODE
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9 from test.test_support import TESTFN_ENCODING, TESTFN_UNENCODABLE
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10 try:
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11 TESTFN_ENCODED = TESTFN_UNICODE.encode(TESTFN_ENCODING)
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12 except (UnicodeError, TypeError):
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13 # Either the file system encoding is None, or the file name
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14 # cannot be encoded in the file system encoding.
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15 raise unittest.SkipTest("No Unicode filesystem semantics on this platform.")
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16
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17 if TESTFN_ENCODED.decode(TESTFN_ENCODING) != TESTFN_UNICODE:
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18 # The file system encoding does not support Latin-1
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19 # (which test_support assumes), so try the file system
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20 # encoding instead.
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21 import sys
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22 try:
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23 TESTFN_UNICODE = unicode("@test-\xe0\xf2", sys.getfilesystemencoding())
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24 TESTFN_ENCODED = TESTFN_UNICODE.encode(TESTFN_ENCODING)
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25 if '?' in TESTFN_ENCODED:
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26 # MBCS will not report the error properly
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27 raise UnicodeError, "mbcs encoding problem"
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28 except (UnicodeError, TypeError):
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29 raise unittest.SkipTest("Cannot find a suiteable filename.")
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30
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31 if TESTFN_ENCODED.decode(TESTFN_ENCODING) != TESTFN_UNICODE:
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32 raise unittest.SkipTest("Cannot find a suitable filename.")
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33
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34 def remove_if_exists(filename):
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35 if os.path.exists(filename):
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36 os.unlink(filename)
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37
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38 class TestUnicodeFiles(unittest.TestCase):
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39 # The 'do_' functions are the actual tests. They generally assume the
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40 # file already exists etc.
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41
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42 # Do all the tests we can given only a single filename. The file should
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43 # exist.
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44 def _do_single(self, filename):
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45 self.assertTrue(os.path.exists(filename))
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46 self.assertTrue(os.path.isfile(filename))
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47 self.assertTrue(os.access(filename, os.R_OK))
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48 self.assertTrue(os.path.exists(os.path.abspath(filename)))
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49 self.assertTrue(os.path.isfile(os.path.abspath(filename)))
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50 self.assertTrue(os.access(os.path.abspath(filename), os.R_OK))
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51 os.chmod(filename, 0777)
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52 os.utime(filename, None)
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53 os.utime(filename, (time.time(), time.time()))
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54 # Copy/rename etc tests using the same filename
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55 self._do_copyish(filename, filename)
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56 # Filename should appear in glob output
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57 self.assertTrue(
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58 os.path.abspath(filename)==os.path.abspath(glob.glob(filename)[0]))
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59 # basename should appear in listdir.
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60 path, base = os.path.split(os.path.abspath(filename))
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61 if isinstance(base, str):
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62 base = base.decode(TESTFN_ENCODING)
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63 file_list = os.listdir(path)
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64 # listdir() with a unicode arg may or may not return Unicode
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65 # objects, depending on the platform.
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66 if file_list and isinstance(file_list[0], str):
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67 file_list = [f.decode(TESTFN_ENCODING) for f in file_list]
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68
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69 # Normalize the unicode strings, as round-tripping the name via the OS
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70 # may return a different (but equivalent) value.
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71 base = unicodedata.normalize("NFD", base)
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72 file_list = [unicodedata.normalize("NFD", f) for f in file_list]
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73
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74 self.assertIn(base, file_list)
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75
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76 # Do as many "equivalancy' tests as we can - ie, check that although we
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77 # have different types for the filename, they refer to the same file.
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78 def _do_equivalent(self, filename1, filename2):
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79 # Note we only check "filename1 against filename2" - we don't bother
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80 # checking "filename2 against 1", as we assume we are called again with
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81 # the args reversed.
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82 self.assertTrue(type(filename1)!=type(filename2),
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83 "No point checking equivalent filenames of the same type")
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84 # stat and lstat should return the same results.
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85 self.assertEqual(os.stat(filename1),
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86 os.stat(filename2))
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87 self.assertEqual(os.lstat(filename1),
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88 os.lstat(filename2))
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89 # Copy/rename etc tests using equivalent filename
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90 self._do_copyish(filename1, filename2)
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91
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92 # Tests that copy, move, etc one file to another.
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93 def _do_copyish(self, filename1, filename2):
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94 # Should be able to rename the file using either name.
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95 self.assertTrue(os.path.isfile(filename1)) # must exist.
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96 os.rename(filename1, filename2 + ".new")
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97 self.assertTrue(os.path.isfile(filename1+".new"))
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98 os.rename(filename1 + ".new", filename2)
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99 self.assertTrue(os.path.isfile(filename2))
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100
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101 shutil.copy(filename1, filename2 + ".new")
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102 os.unlink(filename1 + ".new") # remove using equiv name.
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103 # And a couple of moves, one using each name.
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104 shutil.move(filename1, filename2 + ".new")
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105 self.assertTrue(not os.path.exists(filename2))
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106 shutil.move(filename1 + ".new", filename2)
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107 self.assertTrue(os.path.exists(filename1))
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108 # Note - due to the implementation of shutil.move,
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109 # it tries a rename first. This only fails on Windows when on
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110 # different file systems - and this test can't ensure that.
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111 # So we test the shutil.copy2 function, which is the thing most
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112 # likely to fail.
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113 shutil.copy2(filename1, filename2 + ".new")
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114 os.unlink(filename1 + ".new")
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115
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116 def _do_directory(self, make_name, chdir_name, encoded):
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117 cwd = os.getcwd()
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118 if os.path.isdir(make_name):
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119 os.rmdir(make_name)
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120 os.mkdir(make_name)
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121 try:
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122 os.chdir(chdir_name)
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123 try:
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124 if not encoded:
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125 cwd_result = os.getcwdu()
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126 name_result = make_name
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127 else:
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128 cwd_result = os.getcwd().decode(TESTFN_ENCODING)
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129 name_result = make_name.decode(TESTFN_ENCODING)
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130
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131 cwd_result = unicodedata.normalize("NFD", cwd_result)
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132 name_result = unicodedata.normalize("NFD", name_result)
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133
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134 self.assertEqual(os.path.basename(cwd_result),name_result)
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135 finally:
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136 os.chdir(cwd)
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137 finally:
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138 os.rmdir(make_name)
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139
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140 # The '_test' functions 'entry points with params' - ie, what the
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141 # top-level 'test' functions would be if they could take params
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142 def _test_single(self, filename):
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143 remove_if_exists(filename)
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144 f = file(filename, "w")
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145 f.close()
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146 try:
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147 self._do_single(filename)
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148 finally:
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149 os.unlink(filename)
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150 self.assertTrue(not os.path.exists(filename))
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151 # and again with os.open.
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152 f = os.open(filename, os.O_CREAT)
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153 os.close(f)
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154 try:
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155 self._do_single(filename)
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156 finally:
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157 os.unlink(filename)
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158
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159 def _test_equivalent(self, filename1, filename2):
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160 remove_if_exists(filename1)
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161 self.assertTrue(not os.path.exists(filename2))
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162 f = file(filename1, "w")
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163 f.close()
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164 try:
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165 self._do_equivalent(filename1, filename2)
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166 finally:
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167 os.unlink(filename1)
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168
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169 # The 'test' functions are unittest entry points, and simply call our
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170 # _test functions with each of the filename combinations we wish to test
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171 def test_single_files(self):
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172 self._test_single(TESTFN_ENCODED)
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173 self._test_single(TESTFN_UNICODE)
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174 if TESTFN_UNENCODABLE is not None:
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175 self._test_single(TESTFN_UNENCODABLE)
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176
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177 def test_equivalent_files(self):
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178 self._test_equivalent(TESTFN_ENCODED, TESTFN_UNICODE)
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179 self._test_equivalent(TESTFN_UNICODE, TESTFN_ENCODED)
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180
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181 def test_directories(self):
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182 # For all 'equivalent' combinations:
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183 # Make dir with encoded, chdir with unicode, checkdir with encoded
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184 # (or unicode/encoded/unicode, etc
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185 ext = ".dir"
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186 self._do_directory(TESTFN_ENCODED+ext, TESTFN_ENCODED+ext, True)
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187 self._do_directory(TESTFN_ENCODED+ext, TESTFN_UNICODE+ext, True)
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188 self._do_directory(TESTFN_UNICODE+ext, TESTFN_ENCODED+ext, False)
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189 self._do_directory(TESTFN_UNICODE+ext, TESTFN_UNICODE+ext, False)
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190 # Our directory name that can't use a non-unicode name.
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191 if TESTFN_UNENCODABLE is not None:
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192 self._do_directory(TESTFN_UNENCODABLE+ext,
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193 TESTFN_UNENCODABLE+ext,
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194 False)
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195
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196 def test_main():
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197 run_unittest(__name__)
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198
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199 if __name__ == "__main__":
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200 test_main()