Mercurial > hg
annotate tests/test-simplemerge.py @ 48669:7ee07e1a25c0
share-safe: enable by default (BC)
The feature have been around for a year (4 version) and is quite important.
Lets make it enabled by default.
Differential Revision: https://phab.mercurial-scm.org/D11997
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
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date | Tue, 11 Jan 2022 21:40:08 +0100 |
parents | 7ed4c4753891 |
children | 6000f5b25c9b |
rev | line source |
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1 # Copyright (C) 2004, 2005 Canonical Ltd |
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2 # |
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3 # This program is free software; you can redistribute it and/or modify |
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4 # it under the terms of the GNU General Public License as published by |
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5 # the Free Software Foundation; either version 2 of the License, or |
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6 # (at your option) any later version. |
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7 # |
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8 # This program is distributed in the hope that it will be useful, |
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9 # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 # GNU General Public License for more details. |
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12 # |
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13 # You should have received a copy of the GNU General Public License |
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14 # along with this program; if not, 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 from mercurial.utils import stringutil |
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26 |
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27 TestCase = unittest.TestCase |
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28 # bzr compatible interface, for the tests |
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29 class Merge3(simplemerge.Merge3Text): |
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30 """3-way merge of texts. |
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31 |
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32 Given BASE, OTHER, THIS, tries to produce a combined text |
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33 incorporating the changes from both BASE->OTHER and BASE->THIS. |
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34 All three will typically be sequences of lines.""" |
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35 |
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36 def __init__(self, base, a, b): |
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37 basetext = b'\n'.join([i.strip(b'\n') for i in base] + [b'']) |
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38 atext = b'\n'.join([i.strip(b'\n') for i in a] + [b'']) |
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39 btext = b'\n'.join([i.strip(b'\n') for i in b] + [b'']) |
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40 if ( |
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41 stringutil.binary(basetext) |
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42 or stringutil.binary(atext) |
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43 or stringutil.binary(btext) |
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44 ): |
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45 raise error.Abort(b"don't know how to merge binary files") |
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46 simplemerge.Merge3Text.__init__( |
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47 self, basetext, atext, btext, base, a, b |
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48 ) |
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49 |
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50 |
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51 def split_lines(t): |
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52 return util.stringio(t).readlines() |
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53 |
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54 |
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55 ############################################################ |
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56 # test case data from the gnu diffutils manual |
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57 # common base |
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58 TZU = split_lines( |
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59 b""" The Nameless is the origin of Heaven and Earth; |
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60 The named is the mother of all things. |
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61 |
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62 Therefore let there always be non-being, |
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63 so we may see their subtlety, |
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64 And let there always be being, |
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65 so we may see their outcome. |
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66 The two are the same, |
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67 But after they are produced, |
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68 they have different names. |
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69 They both may be called deep and profound. |
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70 Deeper and more profound, |
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71 The door of all subtleties! |
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72 """ |
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73 ) |
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74 |
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75 LAO = split_lines( |
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76 b""" The Way that can be told of is not the eternal Way; |
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77 The name that can be named is not the eternal name. |
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78 The Nameless is the origin of Heaven and Earth; |
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79 The Named is the mother of all things. |
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80 Therefore let there always be non-being, |
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81 so we may see their subtlety, |
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82 And let there always be being, |
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83 so we may see their outcome. |
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84 The two are the same, |
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85 But after they are produced, |
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86 they have different names. |
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87 """ |
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88 ) |
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89 |
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90 |
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91 TAO = split_lines( |
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92 b""" 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 |
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97 Therefore let there always be non-being, |
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98 so we may see their subtlety, |
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99 And let there always be being, |
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100 so we may see their result. |
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101 The two are the same, |
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102 But after they are produced, |
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103 they have different names. |
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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 """ |
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108 ) |
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109 |
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110 MERGED_RESULT = split_lines( |
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111 b"""\ |
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112 The Way that can be told of is not the eternal Way; |
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113 The name that can be named is not the eternal name. |
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114 The Nameless is the origin of Heaven and Earth; |
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115 The Named is the mother of all things. |
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116 Therefore let there always be non-being, |
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117 so we may see their subtlety, |
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118 And let there always be being, |
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119 so we may see their result. |
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120 The two are the same, |
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121 But after they are produced, |
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122 they have different names.\ |
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123 \n<<<<<<< LAO\ |
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124 \n======= |
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125 |
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126 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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127 \ |
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128 \n>>>>>>> TAO |
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129 """ |
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130 ) |
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131 |
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132 |
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133 class TestMerge3(TestCase): |
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134 def log(self, msg): |
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135 pass |
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136 |
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137 def test_no_changes(self): |
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138 """No conflicts because nothing changed""" |
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139 m3 = Merge3([b'aaa', b'bbb'], [b'aaa', b'bbb'], [b'aaa', b'bbb']) |
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140 |
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141 self.assertEqual( |
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142 list(m3.find_sync_regions()), |
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143 [(0, 2, 0, 2, 0, 2), (2, 2, 2, 2, 2, 2)], |
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144 ) |
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145 |
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146 self.assertEqual(list(m3.merge_regions()), [(b'unchanged', 0, 2)]) |
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147 |
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148 self.assertEqual( |
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149 list(m3.merge_groups()), [(b'unchanged', [b'aaa', b'bbb'])] |
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150 ) |
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151 |
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152 def test_front_insert(self): |
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153 m3 = Merge3([b'zz'], [b'aaa', b'bbb', b'zz'], [b'zz']) |
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154 |
17513 | 155 # todo: should use a sentinel at end as from get_matching_blocks |
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156 # to match without zz |
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157 self.assertEqual( |
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158 list(m3.find_sync_regions()), |
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159 [(0, 1, 2, 3, 0, 1), (1, 1, 3, 3, 1, 1)], |
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160 ) |
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161 |
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162 self.assertEqual( |
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163 list(m3.merge_regions()), [(b'a', 0, 2), (b'unchanged', 0, 1)] |
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164 ) |
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165 |
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166 self.assertEqual( |
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167 list(m3.merge_groups()), |
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168 [(b'a', [b'aaa', b'bbb']), (b'unchanged', [b'zz'])], |
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169 ) |
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170 |
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171 def test_null_insert(self): |
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172 m3 = Merge3([], [b'aaa', b'bbb'], []) |
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174 # to match without zz |
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175 self.assertEqual(list(m3.find_sync_regions()), [(0, 0, 2, 2, 0, 0)]) |
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176 |
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177 self.assertEqual(list(m3.merge_regions()), [(b'a', 0, 2)]) |
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178 |
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179 self.assertEqual( |
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180 simplemerge.render_minimized(m3), ([b'aaa', b'bbb'], False) |
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181 ) |
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182 |
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183 def test_no_conflicts(self): |
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184 """No conflicts because only one side changed""" |
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185 m3 = Merge3( |
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186 [b'aaa', b'bbb'], [b'aaa', b'111', b'bbb'], [b'aaa', b'bbb'] |
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187 ) |
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188 |
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189 self.assertEqual( |
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190 list(m3.find_sync_regions()), |
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191 [(0, 1, 0, 1, 0, 1), (1, 2, 2, 3, 1, 2), (2, 2, 3, 3, 2, 2)], |
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192 ) |
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193 |
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194 self.assertEqual( |
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195 list(m3.merge_regions()), |
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196 [(b'unchanged', 0, 1), (b'a', 1, 2), (b'unchanged', 1, 2)], |
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197 ) |
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198 |
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199 def test_append_a(self): |
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200 m3 = Merge3( |
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201 [b'aaa\n', b'bbb\n'], |
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202 [b'aaa\n', b'bbb\n', b'222\n'], |
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203 [b'aaa\n', b'bbb\n'], |
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204 ) |
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205 |
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206 self.assertEqual( |
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207 b''.join(simplemerge.render_minimized(m3)[0]), b'aaa\nbbb\n222\n' |
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208 ) |
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209 |
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210 def test_append_b(self): |
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211 m3 = Merge3( |
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212 [b'aaa\n', b'bbb\n'], |
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213 [b'aaa\n', b'bbb\n'], |
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214 [b'aaa\n', b'bbb\n', b'222\n'], |
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215 ) |
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216 |
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217 self.assertEqual( |
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218 b''.join(simplemerge.render_minimized(m3)[0]), b'aaa\nbbb\n222\n' |
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219 ) |
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220 |
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221 def test_append_agreement(self): |
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222 m3 = Merge3( |
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223 [b'aaa\n', b'bbb\n'], |
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224 [b'aaa\n', b'bbb\n', b'222\n'], |
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225 [b'aaa\n', b'bbb\n', b'222\n'], |
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226 ) |
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227 |
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228 self.assertEqual( |
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229 b''.join(simplemerge.render_minimized(m3)[0]), b'aaa\nbbb\n222\n' |
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230 ) |
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231 |
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232 def test_append_clash(self): |
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233 m3 = Merge3( |
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234 [b'aaa\n', b'bbb\n'], |
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235 [b'aaa\n', b'bbb\n', b'222\n'], |
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236 [b'aaa\n', b'bbb\n', b'333\n'], |
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237 ) |
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238 |
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239 ml, conflicts = simplemerge.render_minimized( |
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240 m3, |
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241 name_a=b'a', |
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242 name_b=b'b', |
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243 start_marker=b'<<', |
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244 mid_marker=b'--', |
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245 end_marker=b'>>', |
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246 ) |
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247 self.assertEqual( |
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248 b''.join(ml), |
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249 b'aaa\n' b'bbb\n' b'<< a\n' b'222\n' b'--\n' b'333\n' b'>> b\n', |
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250 ) |
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251 |
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252 def test_insert_agreement(self): |
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253 m3 = Merge3( |
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254 [b'aaa\n', b'bbb\n'], |
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255 [b'aaa\n', b'222\n', b'bbb\n'], |
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256 [b'aaa\n', b'222\n', b'bbb\n'], |
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257 ) |
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258 |
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259 ml, conflicts = simplemerge.render_minimized( |
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260 m3, |
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261 name_a=b'a', |
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262 name_b=b'b', |
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263 start_marker=b'<<', |
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264 mid_marker=b'--', |
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265 end_marker=b'>>', |
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266 ) |
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267 self.assertEqual(b''.join(ml), b'aaa\n222\nbbb\n') |
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268 |
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269 def test_insert_clash(self): |
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270 """Both try to insert lines in the same place.""" |
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271 m3 = Merge3( |
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272 [b'aaa\n', b'bbb\n'], |
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273 [b'aaa\n', b'111\n', b'bbb\n'], |
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274 [b'aaa\n', b'222\n', b'bbb\n'], |
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275 ) |
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276 |
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277 self.assertEqual( |
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278 list(m3.find_sync_regions()), |
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279 [(0, 1, 0, 1, 0, 1), (1, 2, 2, 3, 2, 3), (2, 2, 3, 3, 3, 3)], |
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280 ) |
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281 |
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282 self.assertEqual( |
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283 list(m3.merge_regions()), |
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284 [ |
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285 (b'unchanged', 0, 1), |
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286 (b'conflict', 1, 1, 1, 2, 1, 2), |
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287 (b'unchanged', 1, 2), |
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288 ], |
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289 ) |
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290 |
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291 self.assertEqual( |
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292 list(m3.merge_groups()), |
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293 [ |
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294 (b'unchanged', [b'aaa\n']), |
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295 (b'conflict', ([], [b'111\n'], [b'222\n'])), |
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296 (b'unchanged', [b'bbb\n']), |
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297 ], |
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298 ) |
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299 |
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300 ml, conflicts = simplemerge.render_minimized( |
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301 m3, |
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302 name_a=b'a', |
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303 name_b=b'b', |
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304 start_marker=b'<<', |
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305 mid_marker=b'--', |
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306 end_marker=b'>>', |
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307 ) |
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308 self.assertEqual( |
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309 b''.join(ml), |
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310 b'''aaa |
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311 << a |
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312 111 |
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313 -- |
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314 222 |
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315 >> b |
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316 bbb |
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317 ''', |
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318 ) |
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319 |
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320 def test_replace_clash(self): |
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321 """Both try to insert lines in the same place.""" |
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322 m3 = Merge3( |
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323 [b'aaa', b'000', b'bbb'], |
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324 [b'aaa', b'111', b'bbb'], |
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325 [b'aaa', b'222', b'bbb'], |
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326 ) |
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327 |
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328 self.assertEqual( |
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329 list(m3.find_sync_regions()), |
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330 [(0, 1, 0, 1, 0, 1), (2, 3, 2, 3, 2, 3), (3, 3, 3, 3, 3, 3)], |
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331 ) |
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332 |
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333 def test_replace_multi(self): |
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334 """Replacement with regions of different size.""" |
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335 m3 = Merge3( |
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336 [b'aaa', b'000', b'000', b'bbb'], |
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337 [b'aaa', b'111', b'111', b'111', b'bbb'], |
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338 [b'aaa', b'222', b'222', b'222', b'222', b'bbb'], |
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339 ) |
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340 |
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341 self.assertEqual( |
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342 list(m3.find_sync_regions()), |
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343 [(0, 1, 0, 1, 0, 1), (3, 4, 4, 5, 5, 6), (4, 4, 5, 5, 6, 6)], |
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344 ) |
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345 |
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346 def test_merge_poem(self): |
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347 """Test case from diff3 manual""" |
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348 m3 = Merge3(TZU, LAO, TAO) |
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349 ml, conflicts = simplemerge.render_minimized(m3, b'LAO', b'TAO') |
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350 self.log(b'merge result:') |
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351 self.log(b''.join(ml)) |
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352 self.assertEqual(ml, MERGED_RESULT) |
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353 |
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354 def test_binary(self): |
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355 with self.assertRaises(error.Abort): |
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356 Merge3([b'\x00'], [b'a'], [b'b']) |
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357 |
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358 def test_dos_text(self): |
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359 base_text = b'a\r\n' |
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360 this_text = b'b\r\n' |
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361 other_text = b'c\r\n' |
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362 m3 = Merge3( |
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363 base_text.splitlines(True), |
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364 other_text.splitlines(True), |
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365 this_text.splitlines(True), |
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366 ) |
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367 m_lines, conflicts = simplemerge.render_minimized(m3, b'OTHER', b'THIS') |
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368 self.assertEqual( |
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369 b'<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n' |
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370 b'>>>>>>> THIS\r\n'.splitlines(True), |
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371 m_lines, |
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372 ) |
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373 |
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374 def test_mac_text(self): |
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375 base_text = b'a\r' |
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376 this_text = b'b\r' |
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377 other_text = b'c\r' |
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378 m3 = Merge3( |
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379 base_text.splitlines(True), |
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380 other_text.splitlines(True), |
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381 this_text.splitlines(True), |
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382 ) |
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383 m_lines, conflicts = simplemerge.render_minimized(m3, b'OTHER', b'THIS') |
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384 self.assertEqual( |
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385 b'<<<<<<< OTHER\rc\r=======\rb\r' |
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386 b'>>>>>>> THIS\r'.splitlines(True), |
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387 m_lines, |
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388 ) |
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389 |
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390 |
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391 if __name__ == '__main__': |
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392 import silenttestrunner |
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393 |
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394 silenttestrunner.main(__name__) |