Mercurial > public > mercurial-scm > hg

annotate tests/test-simplemerge.py @ 28861:86db5cb55d46

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pycompat: switch to util.stringio for py3 compat
author timeless <timeless@mozdev.org>
date Sun, 10 Apr 2016 20:55:37 +0000
parents 56b2bcea2529
children 2d433fa7ff44
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 import unittest
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17 from unittest import TestCase
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18 from mercurial import util, simplemerge, error
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19
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20 # bzr compatible interface, for the tests
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21 class Merge3(simplemerge.Merge3Text):
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22 """3-way merge of texts.
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23
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24 Given BASE, OTHER, THIS, tries to produce a combined text
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25 incorporating the changes from both BASE->OTHER and BASE->THIS.
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26 All three will typically be sequences of lines."""
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27 def __init__(self, base, a, b):
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28 basetext = '\n'.join([i.strip('\n') for i in base] + [''])
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29 atext = '\n'.join([i.strip('\n') for i in a] + [''])
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30 btext = '\n'.join([i.strip('\n') for i in b] + [''])
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31 if util.binary(basetext) or util.binary(atext) or util.binary(btext):
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32 raise error.Abort("don't know how to merge binary files")
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33 simplemerge.Merge3Text.__init__(self, basetext, atext, btext,
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34 base, a, b)
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35
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36 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase
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37
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38 def split_lines(t):
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39 return util.stringio(t).readlines()
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40
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41 ############################################################
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42 # test case data from the gnu diffutils manual
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43 # common base
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44 TZU = split_lines(""" The Nameless is the origin of Heaven and Earth;
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45 The named is the mother of all things.
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46
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47 Therefore let there always be non-being,
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48 so we may see their subtlety,
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49 And let there always be being,
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50 so we may see their outcome.
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51 The two are the same,
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52 But after they are produced,
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53 they have different names.
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54 They both may be called deep and profound.
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55 Deeper and more profound,
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56 The door of all subtleties!
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57 """)
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58
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59 LAO = split_lines(""" The Way that can be told of is not the eternal Way;
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60 The name that can be named is not the eternal name.
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61 The Nameless is the origin of Heaven and Earth;
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62 The Named is the mother of all things.
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63 Therefore let there always be non-being,
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64 so we may see their subtlety,
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65 And let there always be being,
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66 so we may see their outcome.
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67 The two are the same,
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68 But after they are produced,
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69 they have different names.
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70 """)
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71
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72
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73 TAO = split_lines(""" The Way that can be told of is not the eternal Way;
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74 The name that can be named is not the eternal name.
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75 The Nameless is the origin of Heaven and Earth;
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76 The named is the mother of all things.
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77
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78 Therefore let there always be non-being,
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79 so we may see their subtlety,
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80 And let there always be being,
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81 so we may see their result.
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82 The two are the same,
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83 But after they are produced,
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84 they have different names.
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85
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86 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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87
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88 """)
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89
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90 MERGED_RESULT = split_lines("""\
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91 The Way that can be told of is not the eternal Way;
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92 The name that can be named is not the eternal name.
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93 The Nameless is the origin of Heaven and Earth;
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94 The Named is the mother of all things.
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95 Therefore let there always be non-being,
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96 so we may see their subtlety,
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97 And let there always be being,
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98 so we may see their result.
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99 The two are the same,
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100 But after they are produced,
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101 they have different names.
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102 <<<<<<< LAO
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103 =======
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104
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105 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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106
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107 >>>>>>> TAO
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108 """)
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109
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110 class TestMerge3(TestCase):
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111 def log(self, msg):
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112 pass
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113
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114 def test_no_changes(self):
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115 """No conflicts because nothing changed"""
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116 m3 = Merge3(['aaa', 'bbb'],
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117 ['aaa', 'bbb'],
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118 ['aaa', 'bbb'])
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119
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120 self.assertEquals(m3.find_unconflicted(),
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121 [(0, 2)])
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122
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123 self.assertEquals(list(m3.find_sync_regions()),
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124 [(0, 2,
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125 0, 2,
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126 0, 2),
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127 (2, 2, 2, 2, 2, 2)])
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128
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129 self.assertEquals(list(m3.merge_regions()),
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130 [('unchanged', 0, 2)])
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131
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132 self.assertEquals(list(m3.merge_groups()),
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133 [('unchanged', ['aaa', 'bbb'])])
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134
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135 def test_front_insert(self):
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136 m3 = Merge3(['zz'],
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137 ['aaa', 'bbb', 'zz'],
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138 ['zz'])
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139
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140 # todo: should use a sentinel at end as from get_matching_blocks
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141 # to match without zz
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142 self.assertEquals(list(m3.find_sync_regions()),
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143 [(0, 1, 2, 3, 0, 1),
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144 (1, 1, 3, 3, 1, 1)])
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145
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146 self.assertEquals(list(m3.merge_regions()),
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147 [('a', 0, 2),
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148 ('unchanged', 0, 1)])
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149
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150 self.assertEquals(list(m3.merge_groups()),
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151 [('a', ['aaa', 'bbb']),
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152 ('unchanged', ['zz'])])
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153
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154 def test_null_insert(self):
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155 m3 = Merge3([],
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156 ['aaa', 'bbb'],
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157 [])
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158 # todo: should use a sentinel at end as from get_matching_blocks
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159 # to match without zz
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160 self.assertEquals(list(m3.find_sync_regions()),
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161 [(0, 0, 2, 2, 0, 0)])
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162
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163 self.assertEquals(list(m3.merge_regions()),
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164 [('a', 0, 2)])
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165
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166 self.assertEquals(list(m3.merge_lines()),
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167 ['aaa', 'bbb'])
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168
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169 def test_no_conflicts(self):
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170 """No conflicts because only one side changed"""
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171 m3 = Merge3(['aaa', 'bbb'],
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172 ['aaa', '111', 'bbb'],
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173 ['aaa', 'bbb'])
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174
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175 self.assertEquals(m3.find_unconflicted(),
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176 [(0, 1), (1, 2)])
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177
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178 self.assertEquals(list(m3.find_sync_regions()),
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179 [(0, 1, 0, 1, 0, 1),
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180 (1, 2, 2, 3, 1, 2),
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181 (2, 2, 3, 3, 2, 2)])
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182
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183 self.assertEquals(list(m3.merge_regions()),
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184 [('unchanged', 0, 1),
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185 ('a', 1, 2),
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186 ('unchanged', 1, 2)])
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187
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188 def test_append_a(self):
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189 m3 = Merge3(['aaa\n', 'bbb\n'],
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190 ['aaa\n', 'bbb\n', '222\n'],
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191 ['aaa\n', 'bbb\n'])
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192
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193 self.assertEquals(''.join(m3.merge_lines()),
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194 'aaa\nbbb\n222\n')
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195
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196 def test_append_b(self):
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197 m3 = Merge3(['aaa\n', 'bbb\n'],
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198 ['aaa\n', 'bbb\n'],
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199 ['aaa\n', 'bbb\n', '222\n'])
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200
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201 self.assertEquals(''.join(m3.merge_lines()),
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202 'aaa\nbbb\n222\n')
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203
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204 def test_append_agreement(self):
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205 m3 = Merge3(['aaa\n', 'bbb\n'],
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206 ['aaa\n', 'bbb\n', '222\n'],
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207 ['aaa\n', 'bbb\n', '222\n'])
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208
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209 self.assertEquals(''.join(m3.merge_lines()),
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210 'aaa\nbbb\n222\n')
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211
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212 def test_append_clash(self):
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213 m3 = Merge3(['aaa\n', 'bbb\n'],
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214 ['aaa\n', 'bbb\n', '222\n'],
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215 ['aaa\n', 'bbb\n', '333\n'])
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216
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217 ml = m3.merge_lines(name_a='a',
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218 name_b='b',
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219 start_marker='<<',
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220 mid_marker='--',
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221 end_marker='>>')
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222 self.assertEquals(''.join(ml),
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223 'aaa\n'
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224 'bbb\n'
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225 '<< a\n'
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226 '222\n'
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227 '--\n'
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228 '333\n'
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229 '>> b\n'
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230 )
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231
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232 def test_insert_agreement(self):
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233 m3 = Merge3(['aaa\n', 'bbb\n'],
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234 ['aaa\n', '222\n', 'bbb\n'],
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235 ['aaa\n', '222\n', 'bbb\n'])
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236
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237 ml = m3.merge_lines(name_a='a',
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238 name_b='b',
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239 start_marker='<<',
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240 mid_marker='--',
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241 end_marker='>>')
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242 self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n')
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243
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244
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245 def test_insert_clash(self):
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246 """Both try to insert lines in the same place."""
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247 m3 = Merge3(['aaa\n', 'bbb\n'],
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248 ['aaa\n', '111\n', 'bbb\n'],
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249 ['aaa\n', '222\n', 'bbb\n'])
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250
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251 self.assertEquals(m3.find_unconflicted(),
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252 [(0, 1), (1, 2)])
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253
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254 self.assertEquals(list(m3.find_sync_regions()),
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255 [(0, 1, 0, 1, 0, 1),
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256 (1, 2, 2, 3, 2, 3),
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257 (2, 2, 3, 3, 3, 3)])
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258
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259 self.assertEquals(list(m3.merge_regions()),
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260 [('unchanged', 0, 1),
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261 ('conflict', 1, 1, 1, 2, 1, 2),
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262 ('unchanged', 1, 2)])
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263
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264 self.assertEquals(list(m3.merge_groups()),
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265 [('unchanged', ['aaa\n']),
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266 ('conflict', [], ['111\n'], ['222\n']),
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267 ('unchanged', ['bbb\n']),
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268 ])
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269
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270 ml = m3.merge_lines(name_a='a',
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271 name_b='b',
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272 start_marker='<<',
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273 mid_marker='--',
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274 end_marker='>>')
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275 self.assertEquals(''.join(ml),
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276 '''aaa
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277 << a
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278 111
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279 --
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280 222
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281 >> b
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282 bbb
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283 ''')
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284
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285 def test_replace_clash(self):
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286 """Both try to insert lines in the same place."""
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287 m3 = Merge3(['aaa', '000', 'bbb'],
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288 ['aaa', '111', 'bbb'],
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289 ['aaa', '222', 'bbb'])
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290
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291 self.assertEquals(m3.find_unconflicted(),
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292 [(0, 1), (2, 3)])
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293
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294 self.assertEquals(list(m3.find_sync_regions()),
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295 [(0, 1, 0, 1, 0, 1),
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296 (2, 3, 2, 3, 2, 3),
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297 (3, 3, 3, 3, 3, 3)])
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298
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299 def test_replace_multi(self):
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300 """Replacement with regions of different size."""
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301 m3 = Merge3(['aaa', '000', '000', 'bbb'],
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302 ['aaa', '111', '111', '111', 'bbb'],
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303 ['aaa', '222', '222', '222', '222', 'bbb'])
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304
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305 self.assertEquals(m3.find_unconflicted(),
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306 [(0, 1), (3, 4)])
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307
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308
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309 self.assertEquals(list(m3.find_sync_regions()),
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310 [(0, 1, 0, 1, 0, 1),
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311 (3, 4, 4, 5, 5, 6),
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312 (4, 4, 5, 5, 6, 6)])
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313
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314 def test_merge_poem(self):
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315 """Test case from diff3 manual"""
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316 m3 = Merge3(TZU, LAO, TAO)
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317 ml = list(m3.merge_lines('LAO', 'TAO'))
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318 self.log('merge result:')
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319 self.log(''.join(ml))
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320 self.assertEquals(ml, MERGED_RESULT)
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321
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322 def test_binary(self):
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323 self.assertRaises(error.Abort, Merge3, ['\x00'], ['a'], ['b'])
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324
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325 def test_dos_text(self):
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326 base_text = 'a\r\n'
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327 this_text = 'b\r\n'
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328 other_text = 'c\r\n'
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329 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
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330 this_text.splitlines(True))
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331 m_lines = m3.merge_lines('OTHER', 'THIS')
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332 self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n'
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333 '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines))
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334
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335 def test_mac_text(self):
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336 base_text = 'a\r'
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337 this_text = 'b\r'
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338 other_text = 'c\r'
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339 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
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340 this_text.splitlines(True))
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341 m_lines = m3.merge_lines('OTHER', 'THIS')
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342 self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r'
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343 '>>>>>>> THIS\r'.splitlines(True), list(m_lines))
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344
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345 if __name__ == '__main__':
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346 # hide the timer
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347 import time
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348 orig = time.time
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349 try:
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350 time.time = lambda: 0
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351 unittest.main()
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352 finally:
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353 time.time = orig
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354