Mercurial > cpython-lru_cache-weakref

annotate Lib/test/test_difflib.py @ 38664:7619216bbc19 2.4

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Bug #1502728: Correctly link against librt library on HP-UX. (backport from rev. 46743)
author Georg Brandl <georg@python.org>
date Thu, 08 Jun 2006 12:54:16 +0000
parents 787fff51bf2a
children 16bfe9386068
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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aa0d2d51fbde Get rid of relative imports in all unittests. Now anything that
Barry Warsaw <barry@python.org>
parents: 19817
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1 import difflib
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2 from test.test_support import run_unittest, findfile
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fa4cf878c538 Fix SF bug #763023, difflib.py: ratio() zero division not caught
Neal Norwitz <nnorwitz@gmail.com>
parents: 24364
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3 import unittest
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79ec7e302d53 Exercise Jim Fulton's new doctest extension for running doctests in a
Raymond Hettinger <python@rcn.com>
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4 import doctest
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5
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6 class TestSFbugs(unittest.TestCase):
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7
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8 def test_ratio_for_null_seqn(self):
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9 # Check clearing of SF bug 763023
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Neal Norwitz <nnorwitz@gmail.com>
parents: 24364
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10 s = difflib.SequenceMatcher(None, [], [])
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parents: 24364
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11 self.assertEqual(s.ratio(), 1)
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12 self.assertEqual(s.quick_ratio(), 1)
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13 self.assertEqual(s.real_quick_ratio(), 1)
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14
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15 def test_comparing_empty_lists(self):
5546c7ae24f7 SequenceMatcher(None, [], []).get_grouped_opcodes() now returns a generator
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16 # Check fix for bug #979794
5546c7ae24f7 SequenceMatcher(None, [], []).get_grouped_opcodes() now returns a generator
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17 group_gen = difflib.SequenceMatcher(None, [], []).get_grouped_opcodes()
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18 self.assertRaises(StopIteration, group_gen.next)
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19 diff_gen = difflib.unified_diff([], [])
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20 self.assertRaises(StopIteration, diff_gen.next)
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21
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22 patch914575_from1 = """
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23 1. Beautiful is beTTer than ugly.
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24 2. Explicit is better than implicit.
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25 3. Simple is better than complex.
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26 4. Complex is better than complicated.
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27 """
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28
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29 patch914575_to1 = """
6d3bdd19beeb Patch #914575: difflib side by side diff support, diff.py s/b/s HTML option.
Martin v. Löwis <martin@v.loewis.de>
parents: 32612
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30 1. Beautiful is better than ugly.
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Martin v. Löwis <martin@v.loewis.de>
parents: 32612
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31 3. Simple is better than complex.
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Martin v. Löwis <martin@v.loewis.de>
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32 4. Complicated is better than complex.
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Martin v. Löwis <martin@v.loewis.de>
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33 5. Flat is better than nested.
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34 """
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parents: 32612
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35
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36 patch914575_from2 = """
6d3bdd19beeb Patch #914575: difflib side by side diff support, diff.py s/b/s HTML option.
Martin v. Löwis <martin@v.loewis.de>
parents: 32612
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37 \t\tLine 1: preceeded by from:[tt] to:[ssss]
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38 \t\tLine 2: preceeded by from:[sstt] to:[sssst]
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parents: 32612
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39 \t \tLine 3: preceeded by from:[sstst] to:[ssssss]
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Martin v. Löwis <martin@v.loewis.de>
parents: 32612
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40 Line 4: \thas from:[sst] to:[sss] after :
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parents: 32612
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41 Line 5: has from:[t] to:[ss] at end\t
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parents: 32612
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42 """
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parents: 32612
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43
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44 patch914575_to2 = """
6d3bdd19beeb Patch #914575: difflib side by side diff support, diff.py s/b/s HTML option.
Martin v. Löwis <martin@v.loewis.de>
parents: 32612
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45 Line 1: preceeded by from:[tt] to:[ssss]
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parents: 32612
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46 \tLine 2: preceeded by from:[sstt] to:[sssst]
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parents: 32612
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47 Line 3: preceeded by from:[sstst] to:[ssssss]
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parents: 32612
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48 Line 4: has from:[sst] to:[sss] after :
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49 Line 5: has from:[t] to:[ss] at end
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50 """
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51
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Martin v. Löwis <martin@v.loewis.de>
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52 patch914575_from3 = """line 0
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53 1234567890123456789012345689012345
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54 line 1
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parents: 32612
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55 line 2
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56 line 3
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57 line 4 changed
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58 line 5 changed
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parents: 33324
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59 line 6 changed
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60 line 7
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61 line 8 subtracted
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62 line 9
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63 1234567890123456789012345689012345
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64 short line
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65 just fits in!!
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66 just fits in two lines yup!!
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67 the end"""
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68
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69 patch914575_to3 = """line 0
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70 1234567890123456789012345689012345
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71 line 1
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72 line 2 added
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73 line 3
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74 line 4 chanGEd
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75 line 5a chanGed
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76 line 6a changEd
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77 line 7
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78 line 8
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79 line 9
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80 1234567890
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81 another long line that needs to be wrapped
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82 just fitS in!!
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83 just fits in two lineS yup!!
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84 the end"""
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85
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86 class TestSFpatches(unittest.TestCase):
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87
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88 def test_html_diff(self):
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89 # Check SF patch 914575 for generating HTML differences
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90 f1a = ((patch914575_from1 + '123\n'*10)*3)
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91 t1a = (patch914575_to1 + '123\n'*10)*3
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92 f1b = '456\n'*10 + f1a
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93 t1b = '456\n'*10 + t1a
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94 f1a = f1a.splitlines()
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95 t1a = t1a.splitlines()
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96 f1b = f1b.splitlines()
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97 t1b = t1b.splitlines()
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98 f2 = patch914575_from2.splitlines()
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99 t2 = patch914575_to2.splitlines()
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100 f3 = patch914575_from3
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101 t3 = patch914575_to3
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102 i = difflib.HtmlDiff()
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103 j = difflib.HtmlDiff(tabsize=2)
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104 k = difflib.HtmlDiff(wrapcolumn=14)
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105
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106 full = i.make_file(f1a,t1a,'from','to',context=False,numlines=5)
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107 tables = '\n'.join(
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108 [
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109 '<h2>Context (first diff within numlines=5(default))</h2>',
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110 i.make_table(f1a,t1a,'from','to',context=True),
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111 '<h2>Context (first diff after numlines=5(default))</h2>',
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112 i.make_table(f1b,t1b,'from','to',context=True),
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113 '<h2>Context (numlines=6)</h2>',
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114 i.make_table(f1a,t1a,'from','to',context=True,numlines=6),
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115 '<h2>Context (numlines=0)</h2>',
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116 i.make_table(f1a,t1a,'from','to',context=True,numlines=0),
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117 '<h2>Same Context</h2>',
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118 i.make_table(f1a,f1a,'from','to',context=True),
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119 '<h2>Same Full</h2>',
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120 i.make_table(f1a,f1a,'from','to',context=False),
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121 '<h2>Empty Context</h2>',
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122 i.make_table([],[],'from','to',context=True),
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123 '<h2>Empty Full</h2>',
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124 i.make_table([],[],'from','to',context=False),
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125 '<h2>tabsize=2</h2>',
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126 j.make_table(f2,t2),
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127 '<h2>tabsize=default</h2>',
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128 i.make_table(f2,t2),
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129 '<h2>Context (wrapcolumn=14,numlines=0)</h2>',
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130 k.make_table(f3.splitlines(),t3.splitlines(),context=True,numlines=0),
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131 '<h2>wrapcolumn=14,splitlines()</h2>',
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132 k.make_table(f3.splitlines(),t3.splitlines()),
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133 '<h2>wrapcolumn=14,splitlines(True)</h2>',
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134 k.make_table(f3.splitlines(True),t3.splitlines(True)),
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135 ])
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136 actual = full.replace('</body>','\n%s\n</body>' % tables)
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137 # temporarily uncomment next three lines to baseline this test
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138 #f = open('test_difflib_expect.html','w')
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139 #f.write(actual)
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140 #f.close()
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141 expect = open(findfile('test_difflib_expect.html')).read()
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142
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143
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144 self.assertEqual(actual,expect)
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145
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146 Doctests = doctest.DocTestSuite(difflib)
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147
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148 run_unittest(TestSFpatches, TestSFbugs, Doctests)