Mercurial > hg
annotate tests/test-simplemerge.py @ 46230:1fcab88ab85c
downgrade: if a compression is removed, consider that too
For compression format variant, the result of `fromrepo()` and `fromconfig()` is
not a boolean and we have to actually equate those to find change.
Differential Revision: https://phab.mercurial-scm.org/D9693
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Fri, 08 Jan 2021 23:06:38 +0530 |
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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 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase |
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52 |
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53 |
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54 def split_lines(t): |
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55 return util.stringio(t).readlines() |
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56 |
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57 |
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58 ############################################################ |
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59 # test case data from the gnu diffutils manual |
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60 # common base |
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61 TZU = split_lines( |
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62 b""" 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 |
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65 Therefore let there always be non-being, |
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66 so we may see their subtlety, |
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67 And let there always be being, |
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68 so we may see their outcome. |
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69 The two are the same, |
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70 But after they are produced, |
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71 they have different names. |
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72 They both may be called deep and profound. |
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73 Deeper and more profound, |
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74 The door of all subtleties! |
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75 """ |
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76 ) |
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77 |
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78 LAO = split_lines( |
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79 b""" The Way that can be told of is not the eternal Way; |
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80 The name that can be named is not the eternal name. |
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81 The Nameless is the origin of Heaven and Earth; |
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82 The Named is the mother of all things. |
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83 Therefore let there always be non-being, |
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84 so we may see their subtlety, |
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85 And let there always be being, |
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86 so we may see their outcome. |
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87 The two are the same, |
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88 But after they are produced, |
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89 they have different names. |
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90 """ |
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91 ) |
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92 |
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93 |
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94 TAO = split_lines( |
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95 b""" The Way that can be told of is not the eternal Way; |
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96 The name that can be named is not the eternal name. |
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97 The Nameless is the origin of Heaven and Earth; |
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98 The named is the mother of all things. |
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99 |
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100 Therefore let there always be non-being, |
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101 so we may see their subtlety, |
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102 And let there always be being, |
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103 so we may see their result. |
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104 The two are the same, |
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105 But after they are produced, |
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106 they have different names. |
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107 |
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108 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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109 |
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110 """ |
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111 ) |
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112 |
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113 MERGED_RESULT = split_lines( |
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114 b"""\ |
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115 The Way that can be told of is not the eternal Way; |
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116 The name that can be named is not the eternal name. |
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117 The Nameless is the origin of Heaven and Earth; |
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118 The Named is the mother of all things. |
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119 Therefore let there always be non-being, |
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120 so we may see their subtlety, |
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121 And let there always be being, |
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122 so we may see their result. |
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123 The two are the same, |
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124 But after they are produced, |
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125 they have different names.\ |
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126 \n<<<<<<< LAO\ |
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127 \n======= |
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128 |
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129 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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130 \ |
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131 \n>>>>>>> TAO |
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132 """ |
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133 ) |
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134 |
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135 |
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136 class TestMerge3(TestCase): |
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137 def log(self, msg): |
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138 pass |
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139 |
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140 def test_no_changes(self): |
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141 """No conflicts because nothing changed""" |
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142 m3 = Merge3([b'aaa', b'bbb'], [b'aaa', b'bbb'], [b'aaa', b'bbb']) |
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143 |
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144 self.assertEqual(m3.find_unconflicted(), [(0, 2)]) |
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145 |
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146 self.assertEqual( |
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147 list(m3.find_sync_regions()), |
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148 [(0, 2, 0, 2, 0, 2), (2, 2, 2, 2, 2, 2)], |
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149 ) |
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150 |
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151 self.assertEqual(list(m3.merge_regions()), [(b'unchanged', 0, 2)]) |
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152 |
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153 self.assertEqual( |
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154 list(m3.merge_groups()), [(b'unchanged', [b'aaa', b'bbb'])] |
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155 ) |
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156 |
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157 def test_front_insert(self): |
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158 m3 = Merge3([b'zz'], [b'aaa', b'bbb', b'zz'], [b'zz']) |
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159 |
17513 | 160 # todo: should use a sentinel at end as from get_matching_blocks |
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161 # to match without zz |
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162 self.assertEqual( |
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163 list(m3.find_sync_regions()), |
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164 [(0, 1, 2, 3, 0, 1), (1, 1, 3, 3, 1, 1)], |
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165 ) |
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166 |
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167 self.assertEqual( |
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168 list(m3.merge_regions()), [(b'a', 0, 2), (b'unchanged', 0, 1)] |
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169 ) |
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170 |
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171 self.assertEqual( |
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172 list(m3.merge_groups()), |
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173 [(b'a', [b'aaa', b'bbb']), (b'unchanged', [b'zz'])], |
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174 ) |
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175 |
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176 def test_null_insert(self): |
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177 m3 = Merge3([], [b'aaa', b'bbb'], []) |
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179 # to match without zz |
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180 self.assertEqual(list(m3.find_sync_regions()), [(0, 0, 2, 2, 0, 0)]) |
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181 |
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182 self.assertEqual(list(m3.merge_regions()), [(b'a', 0, 2)]) |
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183 |
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184 self.assertEqual(list(m3.merge_lines()), [b'aaa', b'bbb']) |
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185 |
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186 def test_no_conflicts(self): |
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187 """No conflicts because only one side changed""" |
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188 m3 = Merge3( |
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189 [b'aaa', b'bbb'], [b'aaa', b'111', b'bbb'], [b'aaa', b'bbb'] |
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190 ) |
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191 |
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192 self.assertEqual(m3.find_unconflicted(), [(0, 1), (1, 2)]) |
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193 |
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194 self.assertEqual( |
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195 list(m3.find_sync_regions()), |
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196 [(0, 1, 0, 1, 0, 1), (1, 2, 2, 3, 1, 2), (2, 2, 3, 3, 2, 2)], |
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197 ) |
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198 |
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199 self.assertEqual( |
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200 list(m3.merge_regions()), |
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201 [(b'unchanged', 0, 1), (b'a', 1, 2), (b'unchanged', 1, 2)], |
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202 ) |
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203 |
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204 def test_append_a(self): |
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205 m3 = Merge3( |
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206 [b'aaa\n', b'bbb\n'], |
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207 [b'aaa\n', b'bbb\n', b'222\n'], |
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208 [b'aaa\n', b'bbb\n'], |
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209 ) |
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210 |
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211 self.assertEqual(b''.join(m3.merge_lines()), b'aaa\nbbb\n222\n') |
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212 |
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213 def test_append_b(self): |
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214 m3 = Merge3( |
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215 [b'aaa\n', b'bbb\n'], |
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216 [b'aaa\n', b'bbb\n'], |
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217 [b'aaa\n', b'bbb\n', b'222\n'], |
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218 ) |
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219 |
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220 self.assertEqual(b''.join(m3.merge_lines()), b'aaa\nbbb\n222\n') |
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221 |
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222 def test_append_agreement(self): |
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223 m3 = Merge3( |
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224 [b'aaa\n', b'bbb\n'], |
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225 [b'aaa\n', b'bbb\n', b'222\n'], |
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226 [b'aaa\n', b'bbb\n', b'222\n'], |
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227 ) |
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228 |
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229 self.assertEqual(b''.join(m3.merge_lines()), b'aaa\nbbb\n222\n') |
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230 |
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231 def test_append_clash(self): |
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232 m3 = Merge3( |
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233 [b'aaa\n', b'bbb\n'], |
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234 [b'aaa\n', b'bbb\n', b'222\n'], |
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235 [b'aaa\n', b'bbb\n', b'333\n'], |
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236 ) |
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237 |
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238 ml = m3.merge_lines( |
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239 name_a=b'a', |
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240 name_b=b'b', |
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241 start_marker=b'<<', |
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242 mid_marker=b'--', |
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243 end_marker=b'>>', |
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244 ) |
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245 self.assertEqual( |
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246 b''.join(ml), |
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247 b'aaa\n' b'bbb\n' b'<< a\n' b'222\n' b'--\n' b'333\n' b'>> b\n', |
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248 ) |
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249 |
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250 def test_insert_agreement(self): |
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251 m3 = Merge3( |
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252 [b'aaa\n', b'bbb\n'], |
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253 [b'aaa\n', b'222\n', b'bbb\n'], |
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254 [b'aaa\n', b'222\n', b'bbb\n'], |
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255 ) |
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256 |
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257 ml = m3.merge_lines( |
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258 name_a=b'a', |
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259 name_b=b'b', |
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260 start_marker=b'<<', |
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261 mid_marker=b'--', |
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262 end_marker=b'>>', |
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263 ) |
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264 self.assertEqual(b''.join(ml), b'aaa\n222\nbbb\n') |
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265 |
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266 def test_insert_clash(self): |
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267 """Both try to insert lines in the same place.""" |
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268 m3 = Merge3( |
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269 [b'aaa\n', b'bbb\n'], |
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270 [b'aaa\n', b'111\n', b'bbb\n'], |
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271 [b'aaa\n', b'222\n', b'bbb\n'], |
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272 ) |
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273 |
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274 self.assertEqual(m3.find_unconflicted(), [(0, 1), (1, 2)]) |
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275 |
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276 self.assertEqual( |
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277 list(m3.find_sync_regions()), |
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278 [(0, 1, 0, 1, 0, 1), (1, 2, 2, 3, 2, 3), (2, 2, 3, 3, 3, 3)], |
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279 ) |
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280 |
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281 self.assertEqual( |
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282 list(m3.merge_regions()), |
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283 [ |
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284 (b'unchanged', 0, 1), |
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285 (b'conflict', 1, 1, 1, 2, 1, 2), |
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286 (b'unchanged', 1, 2), |
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287 ], |
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288 ) |
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289 |
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290 self.assertEqual( |
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291 list(m3.merge_groups()), |
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292 [ |
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293 (b'unchanged', [b'aaa\n']), |
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294 (b'conflict', [], [b'111\n'], [b'222\n']), |
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295 (b'unchanged', [b'bbb\n']), |
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296 ], |
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297 ) |
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298 |
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299 ml = m3.merge_lines( |
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300 name_a=b'a', |
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301 name_b=b'b', |
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302 start_marker=b'<<', |
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303 mid_marker=b'--', |
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304 end_marker=b'>>', |
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305 ) |
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306 self.assertEqual( |
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307 b''.join(ml), |
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308 b'''aaa |
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309 << a |
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310 111 |
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311 -- |
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312 222 |
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313 >> b |
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314 bbb |
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315 ''', |
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316 ) |
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317 |
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318 def test_replace_clash(self): |
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319 """Both try to insert lines in the same place.""" |
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320 m3 = Merge3( |
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321 [b'aaa', b'000', b'bbb'], |
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322 [b'aaa', b'111', b'bbb'], |
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323 [b'aaa', b'222', b'bbb'], |
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324 ) |
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325 |
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326 self.assertEqual(m3.find_unconflicted(), [(0, 1), (2, 3)]) |
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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(m3.find_unconflicted(), [(0, 1), (3, 4)]) |
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342 |
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343 self.assertEqual( |
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344 list(m3.find_sync_regions()), |
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345 [(0, 1, 0, 1, 0, 1), (3, 4, 4, 5, 5, 6), (4, 4, 5, 5, 6, 6)], |
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346 ) |
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347 |
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348 def test_merge_poem(self): |
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349 """Test case from diff3 manual""" |
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350 m3 = Merge3(TZU, LAO, TAO) |
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351 ml = list(m3.merge_lines(b'LAO', b'TAO')) |
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352 self.log(b'merge result:') |
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353 self.log(b''.join(ml)) |
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354 self.assertEqual(ml, MERGED_RESULT) |
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355 |
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356 def test_binary(self): |
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357 with self.assertRaises(error.Abort): |
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358 Merge3([b'\x00'], [b'a'], [b'b']) |
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359 |
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360 def test_dos_text(self): |
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361 base_text = b'a\r\n' |
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362 this_text = b'b\r\n' |
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363 other_text = b'c\r\n' |
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364 m3 = Merge3( |
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365 base_text.splitlines(True), |
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366 other_text.splitlines(True), |
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367 this_text.splitlines(True), |
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368 ) |
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369 m_lines = m3.merge_lines(b'OTHER', b'THIS') |
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370 self.assertEqual( |
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371 b'<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n' |
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372 b'>>>>>>> THIS\r\n'.splitlines(True), |
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373 list(m_lines), |
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374 ) |
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375 |
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376 def test_mac_text(self): |
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377 base_text = b'a\r' |
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378 this_text = b'b\r' |
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379 other_text = b'c\r' |
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380 m3 = Merge3( |
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381 base_text.splitlines(True), |
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382 other_text.splitlines(True), |
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383 this_text.splitlines(True), |
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384 ) |
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385 m_lines = m3.merge_lines(b'OTHER', b'THIS') |
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386 self.assertEqual( |
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387 b'<<<<<<< OTHER\rc\r=======\rb\r' |
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388 b'>>>>>>> THIS\r'.splitlines(True), |
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389 list(m_lines), |
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390 ) |
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391 |
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392 |
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393 if __name__ == '__main__': |
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394 import silenttestrunner |
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395 |
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396 silenttestrunner.main(__name__) |