Mercurial > hg
annotate tests/test-simplemerge.py @ 9583:0491be4448bf
bisect: limit considered set to descendants of first good rev
author | Matt Mackall <mpm@selenic.com> |
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date | Mon, 12 Oct 2009 14:59:28 -0500 |
parents | e75aab656f46 |
children | 08a0f04b56bd |
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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, write to the Free Software |
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15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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16 |
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17 import unittest |
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18 from unittest import TestCase |
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19 from mercurial import util, simplemerge |
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20 |
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21 # bzr compatible interface, for the tests |
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22 class Merge3(simplemerge.Merge3Text): |
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23 """3-way merge of texts. |
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24 |
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25 Given BASE, OTHER, THIS, tries to produce a combined text |
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26 incorporating the changes from both BASE->OTHER and BASE->THIS. |
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27 All three will typically be sequences of lines.""" |
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28 def __init__(self, base, a, b): |
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29 basetext = '\n'.join([i.strip('\n') for i in base] + ['']) |
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30 atext = '\n'.join([i.strip('\n') for i in a] + ['']) |
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31 btext = '\n'.join([i.strip('\n') for i in b] + ['']) |
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32 if util.binary(basetext) or util.binary(atext) or util.binary(btext): |
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33 raise util.Abort("don't know how to merge binary files") |
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34 simplemerge.Merge3Text.__init__(self, basetext, atext, btext, |
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35 base, a, b) |
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36 |
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37 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase |
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38 |
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39 def split_lines(t): |
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40 from cStringIO import StringIO |
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41 return StringIO(t).readlines() |
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42 |
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43 ############################################################ |
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44 # test case data from the gnu diffutils manual |
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45 # common base |
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46 TZU = split_lines(""" The Nameless is the origin of Heaven and Earth; |
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47 The named is the mother of all things. |
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48 |
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49 Therefore let there always be non-being, |
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50 so we may see their subtlety, |
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51 And let there always be being, |
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52 so we may see their outcome. |
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53 The two are the same, |
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54 But after they are produced, |
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55 they have different names. |
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56 They both may be called deep and profound. |
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57 Deeper and more profound, |
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58 The door of all subtleties! |
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59 """) |
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60 |
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61 LAO = split_lines(""" The Way that can be told of is not the eternal Way; |
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62 The name that can be named is not the eternal name. |
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63 The Nameless is the origin of Heaven and Earth; |
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64 The Named is the mother of all things. |
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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 """) |
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73 |
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74 |
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75 TAO = split_lines(""" The Way that can be told of is not the eternal Way; |
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76 The name that can be named is not the eternal name. |
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77 The Nameless is the origin of Heaven and Earth; |
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78 The named is the mother of all things. |
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79 |
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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 result. |
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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 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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89 |
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90 """) |
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91 |
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92 MERGED_RESULT = split_lines(""" 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 sentinal 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 sentinal 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),]) |
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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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312 (3,4, 4,5, 5,6), |
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313 (4,4, 5,5, 6,6),]) |
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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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325 base_text = ("a\n" * 20).splitlines(True) |
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326 this_text = ("a\n"*10+"b\n" * 10).splitlines(True) |
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327 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True) |
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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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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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337 def test_minimal_conflicts_unique(self): |
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338 def add_newline(s): |
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339 """Add a newline to each entry in the string""" |
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340 return [(x+'\n') for x in s] |
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341 |
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342 base_text = add_newline("abcdefghijklm") |
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343 this_text = add_newline("abcdefghijklmNOPQRSTUVWXYZ") |
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344 other_text = add_newline("abcdefghijklm1OPQRSTUVWXY2") |
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345 m3 = Merge3(base_text, other_text, this_text) |
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346 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True) |
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347 merged_text = "".join(list(m_lines)) |
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348 optimal_text = ''.join(add_newline("abcdefghijklm") |
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349 + ["<<<<<<< OTHER\n1\n=======\nN\n>>>>>>> THIS\n"] |
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350 + add_newline('OPQRSTUVWXY') |
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351 + ["<<<<<<< OTHER\n2\n=======\nZ\n>>>>>>> THIS\n"] |
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352 ) |
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353 self.assertEquals(optimal_text, merged_text) |
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354 |
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355 def test_minimal_conflicts_nonunique(self): |
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356 def add_newline(s): |
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357 """Add a newline to each entry in the string""" |
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358 return [(x+'\n') for x in s] |
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359 |
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360 base_text = add_newline("abacddefgghij") |
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361 this_text = add_newline("abacddefgghijkalmontfprz") |
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362 other_text = add_newline("abacddefgghijknlmontfprd") |
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363 m3 = Merge3(base_text, other_text, this_text) |
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364 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True) |
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365 merged_text = "".join(list(m_lines)) |
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366 optimal_text = ''.join(add_newline("abacddefgghijk") |
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367 + ["<<<<<<< OTHER\nn\n=======\na\n>>>>>>> THIS\n"] |
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368 + add_newline('lmontfpr') |
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369 + ["<<<<<<< OTHER\nd\n=======\nz\n>>>>>>> THIS\n"] |
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370 ) |
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371 self.assertEquals(optimal_text, merged_text) |
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372 |
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373 def test_reprocess_and_base(self): |
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374 """Reprocessing and showing base breaks correctly""" |
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375 base_text = ("a\n" * 20).splitlines(True) |
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376 this_text = ("a\n"*10+"b\n" * 10).splitlines(True) |
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377 other_text = ("a\n"*10+"c\n"+"b\n" * 8 + "c\n").splitlines(True) |
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378 m3 = Merge3(base_text, other_text, this_text) |
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379 m_lines = m3.merge_lines('OTHER', 'THIS', reprocess=True, |
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380 base_marker='|||||||') |
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381 self.assertRaises(CantReprocessAndShowBase, list, m_lines) |
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382 |
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383 def test_binary(self): |
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384 self.assertRaises(util.Abort, Merge3, ['\x00'], ['a'], ['b']) |
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385 |
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386 def test_dos_text(self): |
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387 base_text = 'a\r\n' |
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388 this_text = 'b\r\n' |
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389 other_text = 'c\r\n' |
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390 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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391 this_text.splitlines(True)) |
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392 m_lines = m3.merge_lines('OTHER', 'THIS') |
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393 self.assertEqual('<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n' |
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394 '>>>>>>> THIS\r\n'.splitlines(True), list(m_lines)) |
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395 |
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396 def test_mac_text(self): |
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397 base_text = 'a\r' |
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398 this_text = 'b\r' |
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399 other_text = 'c\r' |
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400 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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401 this_text.splitlines(True)) |
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402 m_lines = m3.merge_lines('OTHER', 'THIS') |
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403 self.assertEqual('<<<<<<< OTHER\rc\r=======\rb\r' |
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404 '>>>>>>> THIS\r'.splitlines(True), list(m_lines)) |
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405 |
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406 if __name__ == '__main__': |
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407 # hide the timer |
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408 import time |
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409 orig = time.time |
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410 try: |
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411 time.time = lambda: 0 |
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412 unittest.main() |
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413 finally: |
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414 time.time = orig |
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415 |