Mercurial > hg > mercurial-crew-with-dirclash
annotate tests/test-simplemerge.py @ 4359:2e3c54fb79a3
actually port simplemerge to hg
- use bdiff instead of patiencediff; this is a larger change, since
bdiff works on 2 multi-line strings, while patiencediff works on 2
lists;
- rename the main class from Merge3 to Merge3Text and add a Merge3
class that derives from Merge3Text. This new Merge3 class has
the same interface from the original class, so that the tests
still work;
- Merge3 uses util.binary to detect binary data and raises
util.Abort instead of a specific exception;
- don't use the @decorator syntax, to keep python2.3 compatibility;
- the test uses unittest, which likes to print how long it took to
run. This obviously doesn't play too well with hg's test suite,
so we override time.time to fool unittest;
- one test has a different (but still valid) output because of the
different diff algorithm used;
- the TestCase class used by bzr has some extras to help debugging.
test-merge3.py used 2 of them:
- log method to log some data
- assertEqualDiff method to ease viewing diffs of diffs
We add a dummy log method and use regular assertEquals instead of
assertEqualDiff.
- make simplemerge executable and add "#!/usr/bin/env python" header
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
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date | Mon, 16 Apr 2007 20:17:39 -0300 |
parents | 465b9ea02868 |
children | 96d8a56d4ef9 |
rev | line source |
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1 # Copyright (C) 2004, 2005 Canonical Ltd |
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2 # |
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3 # This program is free software; you can redistribute it and/or modify |
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4 # it under the terms of the GNU General Public License as published by |
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5 # the Free Software Foundation; either version 2 of the License, or |
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6 # (at your option) any later version. |
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7 # |
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8 # This program is distributed in the hope that it will be useful, |
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 # GNU General Public License for more details. |
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12 # |
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13 # You should have received a copy of the GNU General Public License |
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14 # along with this program; if not, write to the Free Software |
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15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 import os |
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18 import unittest |
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19 from unittest import TestCase |
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20 import imp |
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21 import shutil |
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22 from mercurial import util |
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23 |
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24 # copy simplemerge to the cwd to avoid creating a .pyc file in the source tree |
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25 shutil.copyfile(os.path.join(os.environ['TESTDIR'], os.path.pardir, |
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26 'contrib', 'simplemerge'), |
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27 'simplemerge.py') |
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28 simplemerge = imp.load_source('simplemerge', 'simplemerge.py') |
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29 Merge3 = simplemerge.Merge3 |
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30 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase |
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31 |
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32 def split_lines(t): |
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33 from cStringIO import StringIO |
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34 return StringIO(t).readlines() |
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35 |
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36 ############################################################ |
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37 # test case data from the gnu diffutils manual |
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38 # common base |
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39 TZU = split_lines(""" The Nameless is the origin of Heaven and Earth; |
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40 The named is the mother of all things. |
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41 |
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42 Therefore let there always be non-being, |
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43 so we may see their subtlety, |
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44 And let there always be being, |
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45 so we may see their outcome. |
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46 The two are the same, |
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47 But after they are produced, |
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48 they have different names. |
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49 They both may be called deep and profound. |
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50 Deeper and more profound, |
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51 The door of all subtleties! |
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52 """) |
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53 |
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54 LAO = split_lines(""" The Way that can be told of is not the eternal Way; |
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55 The name that can be named is not the eternal name. |
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56 The Nameless is the origin of Heaven and Earth; |
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57 The Named is the mother of all things. |
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58 Therefore let there always be non-being, |
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59 so we may see their subtlety, |
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60 And let there always be being, |
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61 so we may see their outcome. |
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62 The two are the same, |
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63 But after they are produced, |
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64 they have different names. |
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65 """) |
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66 |
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67 |
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68 TAO = split_lines(""" The Way that can be told of is not the eternal Way; |
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69 The name that can be named is not the eternal name. |
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70 The Nameless is the origin of Heaven and Earth; |
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71 The named is the mother of all things. |
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72 |
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73 Therefore let there always be non-being, |
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74 so we may see their subtlety, |
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75 And let there always be being, |
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76 so we may see their result. |
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77 The two are the same, |
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78 But after they are produced, |
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79 they have different names. |
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80 |
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81 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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82 |
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83 """) |
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84 |
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85 MERGED_RESULT = split_lines(""" The Way that can be told of is not the eternal Way; |
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86 The name that can be named is not the eternal name. |
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87 The Nameless is the origin of Heaven and Earth; |
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88 The Named is the mother of all things. |
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89 Therefore let there always be non-being, |
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90 so we may see their subtlety, |
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91 And let there always be being, |
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92 so we may see their result. |
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93 The two are the same, |
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94 But after they are produced, |
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95 they have different names. |
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96 <<<<<<< LAO |
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97 ======= |
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98 |
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99 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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100 |
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101 >>>>>>> TAO |
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102 """) |
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103 |
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104 class TestMerge3(TestCase): |
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105 def log(self, msg): |
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106 pass |
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107 |
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108 def test_no_changes(self): |
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109 """No conflicts because nothing changed""" |
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110 m3 = Merge3(['aaa', 'bbb'], |
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111 ['aaa', 'bbb'], |
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112 ['aaa', 'bbb']) |
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113 |
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114 self.assertEquals(m3.find_unconflicted(), |
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115 [(0, 2)]) |
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116 |
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117 self.assertEquals(list(m3.find_sync_regions()), |
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118 [(0, 2, |
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119 0, 2, |
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120 0, 2), |
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121 (2,2, 2,2, 2,2)]) |
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122 |
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123 self.assertEquals(list(m3.merge_regions()), |
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124 [('unchanged', 0, 2)]) |
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125 |
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126 self.assertEquals(list(m3.merge_groups()), |
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127 [('unchanged', ['aaa', 'bbb'])]) |
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128 |
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129 def test_front_insert(self): |
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130 m3 = Merge3(['zz'], |
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131 ['aaa', 'bbb', 'zz'], |
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132 ['zz']) |
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133 |
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134 # todo: should use a sentinal at end as from get_matching_blocks |
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135 # to match without zz |
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136 self.assertEquals(list(m3.find_sync_regions()), |
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137 [(0,1, 2,3, 0,1), |
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138 (1,1, 3,3, 1,1),]) |
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139 |
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140 self.assertEquals(list(m3.merge_regions()), |
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141 [('a', 0, 2), |
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142 ('unchanged', 0, 1)]) |
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143 |
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144 self.assertEquals(list(m3.merge_groups()), |
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145 [('a', ['aaa', 'bbb']), |
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146 ('unchanged', ['zz'])]) |
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147 |
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148 def test_null_insert(self): |
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149 m3 = Merge3([], |
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150 ['aaa', 'bbb'], |
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151 []) |
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152 # todo: should use a sentinal at end as from get_matching_blocks |
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153 # to match without zz |
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154 self.assertEquals(list(m3.find_sync_regions()), |
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155 [(0,0, 2,2, 0,0)]) |
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156 |
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157 self.assertEquals(list(m3.merge_regions()), |
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158 [('a', 0, 2)]) |
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159 |
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160 self.assertEquals(list(m3.merge_lines()), |
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161 ['aaa', 'bbb']) |
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162 |
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163 def test_no_conflicts(self): |
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164 """No conflicts because only one side changed""" |
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165 m3 = Merge3(['aaa', 'bbb'], |
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166 ['aaa', '111', 'bbb'], |
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167 ['aaa', 'bbb']) |
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168 |
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169 self.assertEquals(m3.find_unconflicted(), |
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170 [(0, 1), (1, 2)]) |
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171 |
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172 self.assertEquals(list(m3.find_sync_regions()), |
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173 [(0,1, 0,1, 0,1), |
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174 (1,2, 2,3, 1,2), |
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175 (2,2, 3,3, 2,2),]) |
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176 |
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177 self.assertEquals(list(m3.merge_regions()), |
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178 [('unchanged', 0, 1), |
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179 ('a', 1, 2), |
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180 ('unchanged', 1, 2),]) |
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181 |
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182 def test_append_a(self): |
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183 m3 = Merge3(['aaa\n', 'bbb\n'], |
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184 ['aaa\n', 'bbb\n', '222\n'], |
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185 ['aaa\n', 'bbb\n']) |
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186 |
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187 self.assertEquals(''.join(m3.merge_lines()), |
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188 'aaa\nbbb\n222\n') |
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189 |
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190 def test_append_b(self): |
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191 m3 = Merge3(['aaa\n', 'bbb\n'], |
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192 ['aaa\n', 'bbb\n'], |
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193 ['aaa\n', 'bbb\n', '222\n']) |
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194 |
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195 self.assertEquals(''.join(m3.merge_lines()), |
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196 'aaa\nbbb\n222\n') |
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197 |
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198 def test_append_agreement(self): |
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199 m3 = Merge3(['aaa\n', 'bbb\n'], |
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200 ['aaa\n', 'bbb\n', '222\n'], |
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201 ['aaa\n', 'bbb\n', '222\n']) |
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202 |
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203 self.assertEquals(''.join(m3.merge_lines()), |
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204 'aaa\nbbb\n222\n') |
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205 |
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206 def test_append_clash(self): |
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207 m3 = Merge3(['aaa\n', 'bbb\n'], |
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208 ['aaa\n', 'bbb\n', '222\n'], |
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209 ['aaa\n', 'bbb\n', '333\n']) |
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210 |
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211 ml = m3.merge_lines(name_a='a', |
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212 name_b='b', |
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213 start_marker='<<', |
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214 mid_marker='--', |
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215 end_marker='>>') |
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216 self.assertEquals(''.join(ml), |
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217 '''\ |
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218 aaa |
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219 bbb |
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220 << a |
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221 222 |
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222 -- |
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223 333 |
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224 >> b |
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225 ''') |
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226 |
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227 def test_insert_agreement(self): |
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228 m3 = Merge3(['aaa\n', 'bbb\n'], |
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229 ['aaa\n', '222\n', 'bbb\n'], |
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230 ['aaa\n', '222\n', 'bbb\n']) |
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231 |
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232 ml = m3.merge_lines(name_a='a', |
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233 name_b='b', |
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234 start_marker='<<', |
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235 mid_marker='--', |
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236 end_marker='>>') |
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237 self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n') |
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238 |
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239 |
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240 def test_insert_clash(self): |
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241 """Both try to insert lines in the same place.""" |
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242 m3 = Merge3(['aaa\n', 'bbb\n'], |
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243 ['aaa\n', '111\n', 'bbb\n'], |
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244 ['aaa\n', '222\n', 'bbb\n']) |
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245 |
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246 self.assertEquals(m3.find_unconflicted(), |
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247 [(0, 1), (1, 2)]) |
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248 |
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249 self.assertEquals(list(m3.find_sync_regions()), |
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250 [(0,1, 0,1, 0,1), |
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251 (1,2, 2,3, 2,3), |
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252 (2,2, 3,3, 3,3),]) |
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253 |
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254 self.assertEquals(list(m3.merge_regions()), |
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255 [('unchanged', 0,1), |
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256 ('conflict', 1,1, 1,2, 1,2), |
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257 ('unchanged', 1,2)]) |
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258 |
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259 self.assertEquals(list(m3.merge_groups()), |
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260 [('unchanged', ['aaa\n']), |
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261 ('conflict', [], ['111\n'], ['222\n']), |
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262 ('unchanged', ['bbb\n']), |
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263 ]) |
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264 |
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265 ml = m3.merge_lines(name_a='a', |
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266 name_b='b', |
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267 start_marker='<<', |
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268 mid_marker='--', |
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269 end_marker='>>') |
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270 self.assertEquals(''.join(ml), |
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271 '''aaa |
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272 << a |
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273 111 |
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274 -- |
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275 222 |
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276 >> b |
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277 bbb |
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278 ''') |
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279 |
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280 def test_replace_clash(self): |
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281 """Both try to insert lines in the same place.""" |
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282 m3 = Merge3(['aaa', '000', 'bbb'], |
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283 ['aaa', '111', 'bbb'], |
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284 ['aaa', '222', 'bbb']) |
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285 |
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286 self.assertEquals(m3.find_unconflicted(), |
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287 [(0, 1), (2, 3)]) |
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288 |
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289 self.assertEquals(list(m3.find_sync_regions()), |
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290 [(0,1, 0,1, 0,1), |
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291 (2,3, 2,3, 2,3), |
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292 (3,3, 3,3, 3,3),]) |
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293 |
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294 def test_replace_multi(self): |
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295 """Replacement with regions of different size.""" |
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296 m3 = Merge3(['aaa', '000', '000', 'bbb'], |
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297 ['aaa', '111', '111', '111', 'bbb'], |
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298 ['aaa', '222', '222', '222', '222', 'bbb']) |
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299 |
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300 self.assertEquals(m3.find_unconflicted(), |
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301 [(0, 1), (3, 4)]) |
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302 |
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303 |
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304 self.assertEquals(list(m3.find_sync_regions()), |
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305 [(0,1, 0,1, 0,1), |
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306 (3,4, 4,5, 5,6), |
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307 (4,4, 5,5, 6,6),]) |
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308 |
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309 def test_merge_poem(self): |
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310 """Test case from diff3 manual""" |
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311 m3 = Merge3(TZU, LAO, TAO) |
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312 ml = list(m3.merge_lines('LAO', 'TAO')) |
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313 self.log('merge result:') |
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314 self.log(''.join(ml)) |
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315 self.assertEquals(ml, MERGED_RESULT) |
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316 |
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317 def test_minimal_conflicts_common(self): |
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318 """Reprocessing""" |
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319 base_text = ("a\n" * 20).splitlines(True) |
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320 this_text = ("a\n"*10+"b\n" * 10).splitlines(True) |
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321 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True) |
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322 m3 = Merge3(base_text, other_text, this_text) |
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323 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True) |
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324 merged_text = "".join(list(m_lines)) |
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325 optimal_text = ("a\n" * 10 + "<<<<<<< OTHER\nc\n=======\n" |
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326 + ">>>>>>> THIS\n" |
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327 + 8* "b\n" + "<<<<<<< OTHER\nc\n=======\n" |
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328 + 2* "b\n" + ">>>>>>> THIS\n") |
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329 self.assertEquals(optimal_text, merged_text) |
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330 |
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331 def test_minimal_conflicts_unique(self): |
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332 def add_newline(s): |
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333 """Add a newline to each entry in the string""" |
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334 return [(x+'\n') for x in s] |
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335 |
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336 base_text = add_newline("abcdefghijklm") |
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337 this_text = add_newline("abcdefghijklmNOPQRSTUVWXYZ") |
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338 other_text = add_newline("abcdefghijklm1OPQRSTUVWXY2") |
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339 m3 = Merge3(base_text, other_text, this_text) |
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340 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True) |
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341 merged_text = "".join(list(m_lines)) |
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342 optimal_text = ''.join(add_newline("abcdefghijklm") |
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343 + ["<<<<<<< OTHER\n1\n=======\nN\n>>>>>>> THIS\n"] |
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344 + add_newline('OPQRSTUVWXY') |
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345 + ["<<<<<<< OTHER\n2\n=======\nZ\n>>>>>>> THIS\n"] |
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346 ) |
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347 self.assertEquals(optimal_text, merged_text) |
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348 |
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349 def test_minimal_conflicts_nonunique(self): |
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350 def add_newline(s): |
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351 """Add a newline to each entry in the string""" |
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352 return [(x+'\n') for x in s] |
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353 |
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354 base_text = add_newline("abacddefgghij") |
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355 this_text = add_newline("abacddefgghijkalmontfprz") |
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356 other_text = add_newline("abacddefgghijknlmontfprd") |
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357 m3 = Merge3(base_text, other_text, this_text) |
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358 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True) |
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359 merged_text = "".join(list(m_lines)) |
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360 optimal_text = ''.join(add_newline("abacddefgghijk") |
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361 + ["<<<<<<< OTHER\nn\n=======\na\n>>>>>>> THIS\n"] |
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362 + add_newline('lmontfpr') |
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363 + ["<<<<<<< OTHER\nd\n=======\nz\n>>>>>>> THIS\n"] |
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364 ) |
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365 self.assertEquals(optimal_text, merged_text) |
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366 |
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367 def test_reprocess_and_base(self): |
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368 """Reprocessing and showing base breaks correctly""" |
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369 base_text = ("a\n" * 20).splitlines(True) |
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370 this_text = ("a\n"*10+"b\n" * 10).splitlines(True) |
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371 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True) |
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372 m3 = Merge3(base_text, other_text, this_text) |
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373 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True, |
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374 base_marker='|||||||') |
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375 self.assertRaises(CantReprocessAndShowBase, list, m_lines) |
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376 |
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377 def test_binary(self): |
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378 self.assertRaises(util.Abort, Merge3, ['\x00'], ['a'], ['b']) |
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379 |
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380 def test_dos_text(self): |
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381 base_text = 'a\r\n' |
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382 this_text = 'b\r\n' |
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383 other_text = 'c\r\n' |
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384 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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385 this_text.splitlines(True)) |
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386 m_lines = m3.merge_lines('OTHER', 'THIS') |
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387 self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n' |
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388 '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines)) |
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389 |
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390 def test_mac_text(self): |
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391 base_text = 'a\r' |
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392 this_text = 'b\r' |
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393 other_text = 'c\r' |
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394 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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395 this_text.splitlines(True)) |
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396 m_lines = m3.merge_lines('OTHER', 'THIS') |
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397 self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r' |
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398 '>>>>>>> THIS\r'.splitlines(True), list(m_lines)) |
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399 |
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400 if __name__ == '__main__': |
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401 # hide the timer |
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402 import time |
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403 orig = time.time |
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404 try: |
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405 time.time = lambda: 0 |
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406 unittest.main() |
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407 finally: |
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408 time.time = orig |
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409 |