annotate tests/test-simplemerge.py @ 18042:551e2901192e

merge: fix mistake in moved _checkcollision call from 5881d5b7552f
author Kevin Bullock <kbullock@ringworld.org>
date Thu, 06 Dec 2012 22:07:44 -0600
parents d08b333816c6
children f18830651811
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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
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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 util.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 from cStringIO import StringIO
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40 return StringIO(t).readlines()
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41
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42 ############################################################
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43 # test case data from the gnu diffutils manual
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44 # common base
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45 TZU = split_lines(""" The Nameless is the origin of Heaven and Earth;
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46 The named is the mother of all things.
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47
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48 Therefore let there always be non-being,
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49 so we may see their subtlety,
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50 And let there always be being,
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51 so we may see their outcome.
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52 The two are the same,
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53 But after they are produced,
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54 they have different names.
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55 They both may be called deep and profound.
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56 Deeper and more profound,
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57 The door of all subtleties!
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58 """)
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59
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60 LAO = split_lines(""" The Way that can be told of is not the eternal Way;
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61 The name that can be named is not the eternal name.
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62 The Nameless is the origin of Heaven and Earth;
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63 The Named is the mother of all things.
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64 Therefore let there always be non-being,
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65 so we may see their subtlety,
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66 And let there always be being,
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67 so we may see their outcome.
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68 The two are the same,
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69 But after they are produced,
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70 they have different names.
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71 """)
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72
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73
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74 TAO = split_lines(""" The Way that can be told of is not the eternal Way;
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75 The name that can be named is not the eternal name.
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76 The Nameless is the origin of Heaven and Earth;
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77 The named is the mother of all things.
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78
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79 Therefore let there always be non-being,
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80 so we may see their subtlety,
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81 And let there always be being,
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82 so we may see their result.
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83 The two are the same,
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84 But after they are produced,
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85 they have different names.
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86
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87 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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88
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89 """)
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90
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91 MERGED_RESULT = split_lines("""\
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92 The Way that can be told of is not the eternal Way;
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93 The name that can be named is not the eternal name.
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94 The Nameless is the origin of Heaven and Earth;
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95 The Named is the mother of all things.
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96 Therefore let there always be non-being,
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97 so we may see their subtlety,
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98 And let there always be being,
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99 so we may see their result.
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100 The two are the same,
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101 But after they are produced,
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102 they have different names.
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103 <<<<<<< LAO
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104 =======
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105
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106 -- The Way of Lao-Tzu, tr. Wing-tsit Chan
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107
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108 >>>>>>> TAO
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109 """)
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110
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111 class TestMerge3(TestCase):
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112 def log(self, msg):
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113 pass
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114
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115 def test_no_changes(self):
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116 """No conflicts because nothing changed"""
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117 m3 = Merge3(['aaa', 'bbb'],
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118 ['aaa', 'bbb'],
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119 ['aaa', 'bbb'])
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120
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121 self.assertEquals(m3.find_unconflicted(),
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122 [(0, 2)])
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123
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124 self.assertEquals(list(m3.find_sync_regions()),
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125 [(0, 2,
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126 0, 2,
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127 0, 2),
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128 (2, 2, 2, 2, 2, 2)])
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129
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130 self.assertEquals(list(m3.merge_regions()),
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131 [('unchanged', 0, 2)])
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132
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133 self.assertEquals(list(m3.merge_groups()),
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134 [('unchanged', ['aaa', 'bbb'])])
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135
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136 def test_front_insert(self):
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137 m3 = Merge3(['zz'],
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138 ['aaa', 'bbb', 'zz'],
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139 ['zz'])
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140
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141 # todo: should use a sentinel at end as from get_matching_blocks
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142 # to match without zz
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143 self.assertEquals(list(m3.find_sync_regions()),
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144 [(0, 1, 2, 3, 0, 1),
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145 (1, 1, 3, 3, 1, 1)])
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146
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147 self.assertEquals(list(m3.merge_regions()),
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148 [('a', 0, 2),
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149 ('unchanged', 0, 1)])
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150
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151 self.assertEquals(list(m3.merge_groups()),
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152 [('a', ['aaa', 'bbb']),
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153 ('unchanged', ['zz'])])
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154
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155 def test_null_insert(self):
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156 m3 = Merge3([],
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157 ['aaa', 'bbb'],
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158 [])
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159 # todo: should use a sentinel at end as from get_matching_blocks
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160 # to match without zz
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161 self.assertEquals(list(m3.find_sync_regions()),
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162 [(0, 0, 2, 2, 0, 0)])
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163
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164 self.assertEquals(list(m3.merge_regions()),
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165 [('a', 0, 2)])
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166
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167 self.assertEquals(list(m3.merge_lines()),
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168 ['aaa', 'bbb'])
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169
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170 def test_no_conflicts(self):
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171 """No conflicts because only one side changed"""
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172 m3 = Merge3(['aaa', 'bbb'],
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173 ['aaa', '111', 'bbb'],
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174 ['aaa', 'bbb'])
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175
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176 self.assertEquals(m3.find_unconflicted(),
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177 [(0, 1), (1, 2)])
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178
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179 self.assertEquals(list(m3.find_sync_regions()),
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180 [(0, 1, 0, 1, 0, 1),
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181 (1, 2, 2, 3, 1, 2),
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182 (2, 2, 3, 3, 2, 2)])
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183
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184 self.assertEquals(list(m3.merge_regions()),
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185 [('unchanged', 0, 1),
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186 ('a', 1, 2),
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187 ('unchanged', 1, 2)])
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188
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189 def test_append_a(self):
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190 m3 = Merge3(['aaa\n', 'bbb\n'],
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191 ['aaa\n', 'bbb\n', '222\n'],
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192 ['aaa\n', 'bbb\n'])
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193
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194 self.assertEquals(''.join(m3.merge_lines()),
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195 'aaa\nbbb\n222\n')
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196
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197 def test_append_b(self):
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198 m3 = Merge3(['aaa\n', 'bbb\n'],
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199 ['aaa\n', 'bbb\n'],
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200 ['aaa\n', 'bbb\n', '222\n'])
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201
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202 self.assertEquals(''.join(m3.merge_lines()),
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203 'aaa\nbbb\n222\n')
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204
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205 def test_append_agreement(self):
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206 m3 = Merge3(['aaa\n', 'bbb\n'],
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207 ['aaa\n', 'bbb\n', '222\n'],
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208 ['aaa\n', 'bbb\n', '222\n'])
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209
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210 self.assertEquals(''.join(m3.merge_lines()),
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211 'aaa\nbbb\n222\n')
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212
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213 def test_append_clash(self):
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214 m3 = Merge3(['aaa\n', 'bbb\n'],
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215 ['aaa\n', 'bbb\n', '222\n'],
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216 ['aaa\n', 'bbb\n', '333\n'])
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217
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218 ml = m3.merge_lines(name_a='a',
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219 name_b='b',
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220 start_marker='<<',
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221 mid_marker='--',
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222 end_marker='>>')
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223 self.assertEquals(''.join(ml),
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224 'aaa\n'
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225 'bbb\n'
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226 '<< a\n'
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227 '222\n'
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228 '--\n'
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229 '333\n'
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230 '>> b\n'
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231 )
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232
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233 def test_insert_agreement(self):
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234 m3 = Merge3(['aaa\n', 'bbb\n'],
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235 ['aaa\n', '222\n', 'bbb\n'],
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236 ['aaa\n', '222\n', 'bbb\n'])
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237
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238 ml = m3.merge_lines(name_a='a',
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239 name_b='b',
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240 start_marker='<<',
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241 mid_marker='--',
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242 end_marker='>>')
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243 self.assertEquals(''.join(ml), 'aaa\n222\nbbb\n')
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244
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245
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246 def test_insert_clash(self):
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247 """Both try to insert lines in the same place."""
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248 m3 = Merge3(['aaa\n', 'bbb\n'],
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249 ['aaa\n', '111\n', 'bbb\n'],
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250 ['aaa\n', '222\n', 'bbb\n'])
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251
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252 self.assertEquals(m3.find_unconflicted(),
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253 [(0, 1), (1, 2)])
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254
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255 self.assertEquals(list(m3.find_sync_regions()),
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256 [(0, 1, 0, 1, 0, 1),
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257 (1, 2, 2, 3, 2, 3),
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258 (2, 2, 3, 3, 3, 3)])
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259
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260 self.assertEquals(list(m3.merge_regions()),
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261 [('unchanged', 0, 1),
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262 ('conflict', 1, 1, 1, 2, 1, 2),
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263 ('unchanged', 1, 2)])
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264
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265 self.assertEquals(list(m3.merge_groups()),
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266 [('unchanged', ['aaa\n']),
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267 ('conflict', [], ['111\n'], ['222\n']),
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268 ('unchanged', ['bbb\n']),
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269 ])
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270
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271 ml = m3.merge_lines(name_a='a',
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272 name_b='b',
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273 start_marker='<<',
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274 mid_marker='--',
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275 end_marker='>>')
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276 self.assertEquals(''.join(ml),
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277 '''aaa
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278 << a
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279 111
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280 --
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281 222
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282 >> b
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283 bbb
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284 ''')
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285
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286 def test_replace_clash(self):
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287 """Both try to insert lines in the same place."""
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288 m3 = Merge3(['aaa', '000', 'bbb'],
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289 ['aaa', '111', 'bbb'],
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290 ['aaa', '222', 'bbb'])
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291
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292 self.assertEquals(m3.find_unconflicted(),
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293 [(0, 1), (2, 3)])
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294
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295 self.assertEquals(list(m3.find_sync_regions()),
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296 [(0, 1, 0, 1, 0, 1),
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297 (2, 3, 2, 3, 2, 3),
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298 (3, 3, 3, 3, 3, 3)])
4362
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299
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300 def test_replace_multi(self):
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301 """Replacement with regions of different size."""
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302 m3 = Merge3(['aaa', '000', '000', 'bbb'],
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303 ['aaa', '111', '111', '111', 'bbb'],
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304 ['aaa', '222', '222', '222', '222', 'bbb'])
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305
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306 self.assertEquals(m3.find_unconflicted(),
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307 [(0, 1), (3, 4)])
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308
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309
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310 self.assertEquals(list(m3.find_sync_regions()),
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311 [(0, 1, 0, 1, 0, 1),
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Matt Mackall <mpm@selenic.com>
parents: 6212
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312 (3, 4, 4, 5, 5, 6),
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Matt Mackall <mpm@selenic.com>
parents: 6212
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313 (4, 4, 5, 5, 6, 6)])
4362
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314
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315 def test_merge_poem(self):
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316 """Test case from diff3 manual"""
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317 m3 = Merge3(TZU, LAO, TAO)
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318 ml = list(m3.merge_lines('LAO', 'TAO'))
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319 self.log('merge result:')
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320 self.log(''.join(ml))
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321 self.assertEquals(ml, MERGED_RESULT)
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322
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323 def test_minimal_conflicts_common(self):
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324 """Reprocessing"""
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diff changeset
325 base_text = ("a\n" * 20).splitlines(True)
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diff changeset
326 this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
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diff changeset
327 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
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parents:
diff changeset
328 m3 = Merge3(base_text, other_text, this_text)
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329 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
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diff changeset
330 merged_text = "".join(list(m_lines))
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331 optimal_text = ("a\n" * 10 + "<<<<<<< OTHER\nc\n=======\n"
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332 + ">>>>>>> THIS\n"
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333 + 8* "b\n" + "<<<<<<< OTHER\nc\n=======\n"
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334 + 2* "b\n" + ">>>>>>> THIS\n")
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335 self.assertEquals(optimal_text, merged_text)
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336
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diff changeset
337 def test_minimal_conflicts_unique(self):
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diff changeset
338 def add_newline(s):
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diff changeset
339 """Add a newline to each entry in the string"""
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
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diff changeset
340 return [(x+'\n') for x in s]
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341
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diff changeset
342 base_text = add_newline("abcdefghijklm")
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diff changeset
343 this_text = add_newline("abcdefghijklmNOPQRSTUVWXYZ")
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parents:
diff changeset
344 other_text = add_newline("abcdefghijklm1OPQRSTUVWXY2")
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parents:
diff changeset
345 m3 = Merge3(base_text, other_text, this_text)
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parents:
diff changeset
346 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
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parents:
diff changeset
347 merged_text = "".join(list(m_lines))
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parents:
diff changeset
348 optimal_text = ''.join(add_newline("abcdefghijklm")
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parents:
diff changeset
349 + ["<<<<<<< OTHER\n1\n=======\nN\n>>>>>>> THIS\n"]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
350 + add_newline('OPQRSTUVWXY')
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parents:
diff changeset
351 + ["<<<<<<< OTHER\n2\n=======\nZ\n>>>>>>> THIS\n"]
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parents:
diff changeset
352 )
4363
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diff changeset
353 self.assertEquals(optimal_text, merged_text)
4362
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354
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diff changeset
355 def test_minimal_conflicts_nonunique(self):
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parents:
diff changeset
356 def add_newline(s):
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
357 """Add a newline to each entry in the string"""
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
358 return [(x+'\n') for x in s]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
359
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parents:
diff changeset
360 base_text = add_newline("abacddefgghij")
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
361 this_text = add_newline("abacddefgghijkalmontfprz")
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
362 other_text = add_newline("abacddefgghijknlmontfprd")
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
363 m3 = Merge3(base_text, other_text, this_text)
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
364 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True)
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
365 merged_text = "".join(list(m_lines))
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
366 optimal_text = ''.join(add_newline("abacddefgghijk")
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
367 + ["<<<<<<< OTHER\nn\n=======\na\n>>>>>>> THIS\n"]
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
368 + add_newline('lmontfpr')
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
369 + ["<<<<<<< OTHER\nd\n=======\nz\n>>>>>>> THIS\n"]
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parents:
diff changeset
370 )
4363
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diff changeset
371 self.assertEquals(optimal_text, merged_text)
4362
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parents:
diff changeset
372
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
373 def test_reprocess_and_base(self):
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
374 """Reprocessing and showing base breaks correctly"""
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
375 base_text = ("a\n" * 20).splitlines(True)
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parents:
diff changeset
376 this_text = ("a\n"*10+"b\n" * 10).splitlines(True)
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parents:
diff changeset
377 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True)
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
378 m3 = Merge3(base_text, other_text, this_text)
4516
96d8a56d4ef9 Removed trailing whitespace and tabs from python files
Thomas Arendsen Hein <thomas@intevation.de>
parents: 4363
diff changeset
379 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True,
4362
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
380 base_marker='|||||||')
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
381 self.assertRaises(CantReprocessAndShowBase, list, m_lines)
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parents:
diff changeset
382
465b9ea02868 Import 3-way merge code from bzr
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parents:
diff changeset
383 def test_binary(self):
4363
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parents: 4362
diff changeset
384 self.assertRaises(util.Abort, Merge3, ['\x00'], ['a'], ['b'])
4362
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parents:
diff changeset
385
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
386 def test_dos_text(self):
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parents:
diff changeset
387 base_text = 'a\r\n'
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
388 this_text = 'b\r\n'
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
389 other_text = 'c\r\n'
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
390 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
391 this_text.splitlines(True))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
392 m_lines = m3.merge_lines('OTHER', 'THIS')
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
393 self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n'
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
394 '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines))
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
395
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
396 def test_mac_text(self):
465b9ea02868 Import 3-way merge code from bzr
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parents:
diff changeset
397 base_text = 'a\r'
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
398 this_text = 'b\r'
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Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
diff changeset
399 other_text = 'c\r'
465b9ea02868 Import 3-way merge code from bzr
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parents:
diff changeset
400 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True),
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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401 this_text.splitlines(True))
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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402 m_lines = m3.merge_lines('OTHER', 'THIS')
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
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403 self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r'
465b9ea02868 Import 3-way merge code from bzr
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents:
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404 '>>>>>>> THIS\r'.splitlines(True), list(m_lines))
4363
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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405
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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406 if __name__ == '__main__':
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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407 # hide the timer
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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408 import time
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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409 orig = time.time
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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410 try:
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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411 time.time = lambda: 0
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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412 unittest.main()
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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413 finally:
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
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414 time.time = orig
2e3c54fb79a3 actually port simplemerge to hg
Alexis S. L. Carvalho <alexis@cecm.usp.br>
parents: 4362
diff changeset
415