Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_linecache.py @ 58925:eecf1bef052d 2.6

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Merged revisions 78207 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r78207 | ezio.melotti | 2010-02-17 01:26:09 +0200 (Wed, 17 Feb 2010) | 1 line #7930: fix stripid ........
author Ezio Melotti <ezio.melotti@gmail.com>
date Tue, 16 Feb 2010 23:29:44 +0000
parents 1ee1fa7becf2
children e20eae3b5fe4
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 """ Tests for the linecache module """
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3 import linecache
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4 import unittest
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5 import os.path
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6 from test import test_support as support
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9 FILENAME = linecache.__file__
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10 INVALID_NAME = '!@$)(!@#_1'
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11 EMPTY = ''
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12 TESTS = 'cjkencodings_test inspect_fodder inspect_fodder2 mapping_tests'
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13 TESTS = TESTS.split()
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14 TEST_PATH = os.path.dirname(support.__file__)
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15 MODULES = "linecache unittest".split()
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16 MODULE_PATH = os.path.dirname(FILENAME)
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18 SOURCE_1 = '''
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19 " Docstring "
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21 def function():
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22 return result
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24 '''
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26 SOURCE_2 = '''
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27 def f():
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28 return 1 + 1
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30 a = f()
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32 '''
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34 class LineCacheTests(unittest.TestCase):
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36 def test_getline(self):
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37 getline = linecache.getline
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39 # Bad values for line number should return an empty string
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40 self.assertEquals(getline(FILENAME, 2**15), EMPTY)
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41 self.assertEquals(getline(FILENAME, -1), EMPTY)
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43 # Float values currently raise TypeError, should it?
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44 self.assertRaises(TypeError, getline, FILENAME, 1.1)
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46 # Bad filenames should return an empty string
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47 self.assertEquals(getline(EMPTY, 1), EMPTY)
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48 self.assertEquals(getline(INVALID_NAME, 1), EMPTY)
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50 # Check whether lines correspond to those from file iteration
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51 for entry in TESTS:
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52 filename = os.path.join(TEST_PATH, entry) + '.py'
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53 for index, line in enumerate(open(filename)):
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54 self.assertEquals(line, getline(filename, index + 1))
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56 # Check module loading
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57 for entry in MODULES:
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58 filename = os.path.join(MODULE_PATH, entry) + '.py'
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59 for index, line in enumerate(open(filename)):
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60 self.assertEquals(line, getline(filename, index + 1))
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62 # Check that bogus data isn't returned (issue #1309567)
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63 empty = linecache.getlines('a/b/c/__init__.py')
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64 self.assertEquals(empty, [])
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66 def test_clearcache(self):
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67 cached = []
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68 for entry in TESTS:
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69 filename = os.path.join(TEST_PATH, entry) + '.py'
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70 cached.append(filename)
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71 linecache.getline(filename, 1)
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73 # Are all files cached?
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74 cached_empty = [fn for fn in cached if fn not in linecache.cache]
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75 self.assertEquals(cached_empty, [])
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76
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77 # Can we clear the cache?
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78 linecache.clearcache()
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79 cached_empty = [fn for fn in cached if fn in linecache.cache]
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80 self.assertEquals(cached_empty, [])
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81
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82 def test_checkcache(self):
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83 getline = linecache.getline
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84 try:
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85 # Create a source file and cache its contents
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86 source_name = support.TESTFN + '.py'
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87 with open(source_name, 'w') as source:
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88 source.write(SOURCE_1)
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89 source.close()
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90 getline(source_name, 1)
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91
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92 # Keep a copy of the old contents
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93 source_list = []
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94 source = open(source_name)
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95 for index, line in enumerate(source):
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96 self.assertEquals(line, getline(source_name, index + 1))
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97 source_list.append(line)
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98 source.close()
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99
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100 source = open(source_name, 'w')
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101 source.write(SOURCE_2)
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102 source.close()
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103
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104 # Try to update a bogus cache entry
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105 linecache.checkcache('dummy')
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106
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107 # Check that the cache matches the old contents
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108 for index, line in enumerate(source_list):
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109 self.assertEquals(line, getline(source_name, index + 1))
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110
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111 # Update the cache and check whether it matches the new source file
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112 linecache.checkcache(source_name)
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113 source = open(source_name)
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114 for index, line in enumerate(source):
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115 self.assertEquals(line, getline(source_name, index + 1))
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116 source_list.append(line)
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117
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118 finally:
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119 support.unlink(source_name)
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120
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121 def test_main():
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122 support.run_unittest(LineCacheTests)
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123
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124 if __name__ == "__main__":
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125 test_main()