annotate tests/test-simplemerge.py @ 36705:c6901665cd5b

py3: make sure __repr__ returns a str # skip-blame because just r'' prefix Differential Revision: https://phab.mercurial-scm.org/D2652
author Pulkit Goyal <7895pulkit@gmail.com>
date Sun, 04 Mar 2018 22:40:33 +0530
parents 68c43a416585
children f0b6fbea00cf
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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, see <http://www.gnu.org/licenses/>.
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15
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16 from __future__ import absolute_import
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17
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18 import unittest
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19 from mercurial import (
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20 error,
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21 simplemerge,
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22 util,
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23 )
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24
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25 TestCase = unittest.TestCase
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26 # bzr compatible interface, for the tests
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27 class Merge3(simplemerge.Merge3Text):
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28 """3-way merge of texts.
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29
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30 Given BASE, OTHER, THIS, tries to produce a combined text
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31 incorporating the changes from both BASE->OTHER and BASE->THIS.
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32 All three will typically be sequences of lines."""
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33 def __init__(self, base, a, b):
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34 basetext = '\n'.join([i.strip('\n') for i in base] + [''])
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35 atext = '\n'.join([i.strip('\n') for i in a] + [''])
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36 btext = '\n'.join([i.strip('\n') for i in b] + [''])
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37 if util.binary(basetext) or util.binary(atext) or util.binary(btext):
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38 raise error.Abort("don't know how to merge binary files")
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39 simplemerge.Merge3Text.__init__(self, basetext, atext, btext,
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40 base, a, b)
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41
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42 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase
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43
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44 def split_lines(t):
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45 return util.stringio(t).readlines()
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46
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47 ############################################################
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48 # test case data from the gnu diffutils manual
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49 # common base
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50 TZU = split_lines(""" The Nameless is the origin of Heaven and Earth;
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51 The named is the mother of all things.
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52
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53 Therefore let there always be non-being,
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54 so we may see their subtlety,
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55 And let there always be being,
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56 so we may see their outcome.
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57 The two are the same,
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58 But after they are produced,
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59 they have different names.
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60 They both may be called deep and profound.
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61 Deeper and more profound,
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62 The door of all subtleties!
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63 """)
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64
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65 LAO = split_lines(""" The Way that can be told of is not the eternal Way;
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66 The name that can be named is not the eternal name.
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67 The Nameless is the origin of Heaven and Earth;
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68 The Named is the mother of all things.
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69 Therefore let there always be non-being,
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70 so we may see their subtlety,
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71 And let there always be being,
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72 so we may see their outcome.
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73 The two are the same,
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74 But after they are produced,
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75 they have different names.
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76 """)
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77
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78
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79 TAO = split_lines(""" The Way that can be told of is not the eternal Way;
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80 The name that can be named is not the eternal name.
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81 The Nameless is the origin of Heaven and Earth;
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82 The named is the mother of all things.
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83
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84 Therefore let there always be non-being,
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85 so we may see their subtlety,
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86 And let there always be being,
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87 so we may see their result.
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88 The two are the same,
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89 But after they are produced,
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90 they have different names.
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91
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92 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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93
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94 """)
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95
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96 MERGED_RESULT = split_lines("""\
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97 The Way that can be told of is not the eternal Way;
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98 The name that can be named is not the eternal name.
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99 The Nameless is the origin of Heaven and Earth;
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100 The Named is the mother of all things.
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101 Therefore let there always be non-being,
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102 so we may see their subtlety,
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103 And let there always be being,
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104 so we may see their result.
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105 The two are the same,
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106 But after they are produced,
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107 they have different names.
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108 <<<<<<< LAO
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109 =======
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110
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111 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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112
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113 >>>>>>> TAO
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114 """)
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115
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116 class TestMerge3(TestCase):
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117 def log(self, msg):
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118 pass
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119
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120 def test_no_changes(self):
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121 """No conflicts because nothing changed"""
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122 m3 = Merge3(['aaa', 'bbb'],
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123 ['aaa', 'bbb'],
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124 ['aaa', 'bbb'])
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125
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126 self.assertEquals(m3.find_unconflicted(),
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127 [(0, 2)])
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128
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129 self.assertEquals(list(m3.find_sync_regions()),
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130 [(0, 2,
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131 0, 2,
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132 0, 2),
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133 (2, 2, 2, 2, 2, 2)])
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134
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135 self.assertEquals(list(m3.merge_regions()),
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136 [('unchanged', 0, 2)])
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137
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138 self.assertEquals(list(m3.merge_groups()),
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139 [('unchanged', ['aaa', 'bbb'])])
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140
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141 def test_front_insert(self):
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142 m3 = Merge3(['zz'],
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143 ['aaa', 'bbb', 'zz'],
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144 ['zz'])
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145
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146 # todo: should use a sentinel at end as from get_matching_blocks
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147 # to match without zz
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148 self.assertEquals(list(m3.find_sync_regions()),
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149 [(0, 1, 2, 3, 0, 1),
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150 (1, 1, 3, 3, 1, 1)])
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151
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152 self.assertEquals(list(m3.merge_regions()),
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153 [('a', 0, 2),
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154 ('unchanged', 0, 1)])
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155
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156 self.assertEquals(list(m3.merge_groups()),
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157 [('a', ['aaa', 'bbb']),
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158 ('unchanged', ['zz'])])
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159
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160 def test_null_insert(self):
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161 m3 = Merge3([],
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162 ['aaa', 'bbb'],
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163 [])
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164 # todo: should use a sentinel at end as from get_matching_blocks
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165 # to match without zz
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166 self.assertEquals(list(m3.find_sync_regions()),
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167 [(0, 0, 2, 2, 0, 0)])
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168
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169 self.assertEquals(list(m3.merge_regions()),
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170 [('a', 0, 2)])
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171
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172 self.assertEquals(list(m3.merge_lines()),
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173 ['aaa', 'bbb'])
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174
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175 def test_no_conflicts(self):
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176 """No conflicts because only one side changed"""
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177 m3 = Merge3(['aaa', 'bbb'],
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178 ['aaa', '111', 'bbb'],
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179 ['aaa', 'bbb'])
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180
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181 self.assertEquals(m3.find_unconflicted(),
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182 [(0, 1), (1, 2)])
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183
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184 self.assertEquals(list(m3.find_sync_regions()),
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185 [(0, 1, 0, 1, 0, 1),
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186 (1, 2, 2, 3, 1, 2),
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187 (2, 2, 3, 3, 2, 2)])
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188
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189 self.assertEquals(list(m3.merge_regions()),
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190 [('unchanged', 0, 1),
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191 ('a', 1, 2),
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192 ('unchanged', 1, 2)])
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193
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194 def test_append_a(self):
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195 m3 = Merge3(['aaa\n', 'bbb\n'],
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196 ['aaa\n', 'bbb\n', '222\n'],
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197 ['aaa\n', 'bbb\n'])
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198
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199 self.assertEquals(''.join(m3.merge_lines()),
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200 'aaa\nbbb\n222\n')
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201
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202 def test_append_b(self):
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203 m3 = Merge3(['aaa\n', 'bbb\n'],
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204 ['aaa\n', 'bbb\n'],
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205 ['aaa\n', 'bbb\n', '222\n'])
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206
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207 self.assertEquals(''.join(m3.merge_lines()),
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208 'aaa\nbbb\n222\n')
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209
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210 def test_append_agreement(self):
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211 m3 = Merge3(['aaa\n', 'bbb\n'],
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212 ['aaa\n', 'bbb\n', '222\n'],
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213 ['aaa\n', 'bbb\n', '222\n'])
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214
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215 self.assertEquals(''.join(m3.merge_lines()),
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216 'aaa\nbbb\n222\n')
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217
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218 def test_append_clash(self):
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219 m3 = Merge3(['aaa\n', 'bbb\n'],
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220 ['aaa\n', 'bbb\n', '222\n'],
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221 ['aaa\n', 'bbb\n', '333\n'])
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222
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223 ml = m3.merge_lines(name_a='a',
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224 name_b='b',
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225 start_marker='<<',
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226 mid_marker='--',
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227 end_marker='>>')
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228 self.assertEquals(''.join(ml),
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229 'aaa\n'
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230 'bbb\n'
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231 '<< a\n'
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232 '222\n'
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233 '--\n'
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234 '333\n'
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235 '>> b\n'
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236 )
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237
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238 def test_insert_agreement(self):
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239 m3 = Merge3(['aaa\n', 'bbb\n'],
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240 ['aaa\n', '222\n', 'bbb\n'],
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241 ['aaa\n', '222\n', 'bbb\n'])
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242
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243 ml = m3.merge_lines(name_a='a',
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244 name_b='b',
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245 start_marker='<<',
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246 mid_marker='--',
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247 end_marker='>>')
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248 self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n')
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249
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250
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251 def test_insert_clash(self):
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252 """Both try to insert lines in the same place."""
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253 m3 = Merge3(['aaa\n', 'bbb\n'],
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254 ['aaa\n', '111\n', 'bbb\n'],
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255 ['aaa\n', '222\n', 'bbb\n'])
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256
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257 self.assertEquals(m3.find_unconflicted(),
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258 [(0, 1), (1, 2)])
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259
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260 self.assertEquals(list(m3.find_sync_regions()),
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261 [(0, 1, 0, 1, 0, 1),
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262 (1, 2, 2, 3, 2, 3),
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263 (2, 2, 3, 3, 3, 3)])
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264
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265 self.assertEquals(list(m3.merge_regions()),
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266 [('unchanged', 0, 1),
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267 ('conflict', 1, 1, 1, 2, 1, 2),
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268 ('unchanged', 1, 2)])
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269
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270 self.assertEquals(list(m3.merge_groups()),
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271 [('unchanged', ['aaa\n']),
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272 ('conflict', [], ['111\n'], ['222\n']),
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273 ('unchanged', ['bbb\n']),
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274 ])
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275
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276 ml = m3.merge_lines(name_a='a',
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277 name_b='b',
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278 start_marker='<<',
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279 mid_marker='--',
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280 end_marker='>>')
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281 self.assertEquals(''.join(ml),
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282 '''aaa
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283 << a
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284 111
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285 --
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286 222
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287 >> b
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288 bbb
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289 ''')
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290
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291 def test_replace_clash(self):
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292 """Both try to insert lines in the same place."""
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293 m3 = Merge3(['aaa', '000', 'bbb'],
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294 ['aaa', '111', 'bbb'],
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295 ['aaa', '222', 'bbb'])
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296
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297 self.assertEquals(m3.find_unconflicted(),
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298 [(0, 1), (2, 3)])
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299
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300 self.assertEquals(list(m3.find_sync_regions()),
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301 [(0, 1, 0, 1, 0, 1),
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302 (2, 3, 2, 3, 2, 3),
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303 (3, 3, 3, 3, 3, 3)])
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304
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305 def test_replace_multi(self):
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306 """Replacement with regions of different size."""
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307 m3 = Merge3(['aaa', '000', '000', 'bbb'],
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308 ['aaa', '111', '111', '111', 'bbb'],
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309 ['aaa', '222', '222', '222', '222', 'bbb'])
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310
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311 self.assertEquals(m3.find_unconflicted(),
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312 [(0, 1), (3, 4)])
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313
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314
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315 self.assertEquals(list(m3.find_sync_regions()),
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316 [(0, 1, 0, 1, 0, 1),
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317 (3, 4, 4, 5, 5, 6),
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318 (4, 4, 5, 5, 6, 6)])
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319
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320 def test_merge_poem(self):
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321 """Test case from diff3 manual"""
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322 m3 = Merge3(TZU, LAO, TAO)
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323 ml = list(m3.merge_lines('LAO', 'TAO'))
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324 self.log('merge result:')
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325 self.log(''.join(ml))
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326 self.assertEquals(ml, MERGED_RESULT)
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327
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328 def test_binary(self):
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329 with self.assertRaises(error.Abort):
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330 Merge3(['\x00'], ['a'], ['b'])
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331
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332 def test_dos_text(self):
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333 base_text = 'a\r\n'
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334 this_text = 'b\r\n'
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335 other_text = 'c\r\n'
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336 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
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337 this_text.splitlines(True))
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338 m_lines = m3.merge_lines('OTHER', 'THIS')
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339 self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n'
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340 '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines))
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341
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342 def test_mac_text(self):
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343 base_text = 'a\r'
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344 this_text = 'b\r'
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345 other_text = 'c\r'
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346 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
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347 this_text.splitlines(True))
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348 m_lines = m3.merge_lines('OTHER', 'THIS')
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349 self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r'
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350 '>>>>>>> THIS\r'.splitlines(True), list(m_lines))
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351
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352 if __name__ == '__main__':
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353 # hide the timer
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354 import time
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355 orig = time.time
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356 try:
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357 time.time = lambda: 0
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358 unittest.main()
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359 finally:
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360 time.time = orig
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361