Mercurial > hg
annotate tests/test-simplemerge.py @ 40413:1ddd202c47d9
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Differential Revision: https://phab.mercurial-scm.org/D5077
author | rdamazio@google.com |
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date | Sat, 13 Oct 2018 05:43:39 -0700 |
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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 ( |
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26 stringutil, |
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27 ) |
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28 |
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29 TestCase = unittest.TestCase |
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30 # bzr compatible interface, for the tests |
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31 class Merge3(simplemerge.Merge3Text): |
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32 """3-way merge of texts. |
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33 |
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34 Given BASE, OTHER, THIS, tries to produce a combined text |
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35 incorporating the changes from both BASE->OTHER and BASE->THIS. |
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36 All three will typically be sequences of lines.""" |
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37 def __init__(self, base, a, b): |
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38 basetext = b'\n'.join([i.strip(b'\n') for i in base] + [b'']) |
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39 atext = b'\n'.join([i.strip(b'\n') for i in a] + [b'']) |
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40 btext = b'\n'.join([i.strip(b'\n') for i in b] + [b'']) |
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41 if (stringutil.binary(basetext) or stringutil.binary(atext) |
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42 or stringutil.binary(btext)): |
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43 raise error.Abort(b"don't know how to merge binary files") |
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44 simplemerge.Merge3Text.__init__(self, basetext, atext, btext, |
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45 base, a, b) |
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46 |
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47 CantReprocessAndShowBase = simplemerge.CantReprocessAndShowBase |
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48 |
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49 def split_lines(t): |
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50 return util.stringio(t).readlines() |
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51 |
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52 ############################################################ |
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53 # test case data from the gnu diffutils manual |
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54 # common base |
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55 TZU = split_lines(b""" The Nameless is the origin of Heaven and Earth; |
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56 The named is the mother of all things. |
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57 |
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58 Therefore let there always be non-being, |
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59 so we may see their subtlety, |
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60 And let there always be being, |
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61 so we may see their outcome. |
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62 The two are the same, |
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63 But after they are produced, |
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64 they have different names. |
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65 They both may be called deep and profound. |
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66 Deeper and more profound, |
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67 The door of all subtleties! |
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68 """) |
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69 |
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70 LAO = split_lines(b""" The Way that can be told of is not the eternal Way; |
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71 The name that can be named is not the eternal name. |
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72 The Nameless is the origin of Heaven and Earth; |
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73 The Named is the mother of all things. |
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74 Therefore let there always be non-being, |
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75 so we may see their subtlety, |
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76 And let there always be being, |
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77 so we may see their outcome. |
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78 The two are the same, |
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79 But after they are produced, |
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80 they have different names. |
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81 """) |
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82 |
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83 |
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84 TAO = split_lines(b""" The Way that can be told of is not the eternal Way; |
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85 The name that can be named is not the eternal name. |
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86 The Nameless is the origin of Heaven and Earth; |
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87 The named is the mother of all things. |
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88 |
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89 Therefore let there always be non-being, |
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90 so we may see their subtlety, |
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91 And let there always be being, |
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92 so we may see their result. |
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93 The two are the same, |
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94 But after they are produced, |
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95 they have different names. |
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96 |
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97 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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98 |
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99 """) |
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100 |
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101 MERGED_RESULT = split_lines(b"""\ |
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102 The Way that can be told of is not the eternal Way; |
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103 The name that can be named is not the eternal name. |
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104 The Nameless is the origin of Heaven and Earth; |
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105 The Named is the mother of all things. |
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106 Therefore let there always be non-being, |
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107 so we may see their subtlety, |
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108 And let there always be being, |
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109 so we may see their result. |
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110 The two are the same, |
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111 But after they are produced, |
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112 they have different names.\ |
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113 \n<<<<<<< LAO\ |
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114 \n======= |
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115 |
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116 -- The Way of Lao-Tzu, tr. Wing-tsit Chan |
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117 \ |
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118 \n>>>>>>> TAO |
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119 """) |
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120 |
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121 class TestMerge3(TestCase): |
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122 def log(self, msg): |
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123 pass |
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124 |
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125 def test_no_changes(self): |
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126 """No conflicts because nothing changed""" |
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127 m3 = Merge3([b'aaa', b'bbb'], |
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128 [b'aaa', b'bbb'], |
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129 [b'aaa', b'bbb']) |
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130 |
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131 self.assertEqual(m3.find_unconflicted(), |
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132 [(0, 2)]) |
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133 |
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134 self.assertEqual(list(m3.find_sync_regions()), |
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135 [(0, 2, |
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136 0, 2, |
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137 0, 2), |
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138 (2, 2, 2, 2, 2, 2)]) |
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139 |
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140 self.assertEqual(list(m3.merge_regions()), |
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141 [(b'unchanged', 0, 2)]) |
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142 |
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143 self.assertEqual(list(m3.merge_groups()), |
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144 [(b'unchanged', [b'aaa', b'bbb'])]) |
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145 |
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146 def test_front_insert(self): |
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147 m3 = Merge3([b'zz'], |
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148 [b'aaa', b'bbb', b'zz'], |
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149 [b'zz']) |
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150 |
17513 | 151 # todo: should use a sentinel at end as from get_matching_blocks |
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152 # to match without zz |
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153 self.assertEqual(list(m3.find_sync_regions()), |
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154 [(0, 1, 2, 3, 0, 1), |
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155 (1, 1, 3, 3, 1, 1)]) |
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156 |
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157 self.assertEqual(list(m3.merge_regions()), |
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158 [(b'a', 0, 2), |
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159 (b'unchanged', 0, 1)]) |
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160 |
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161 self.assertEqual(list(m3.merge_groups()), |
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162 [(b'a', [b'aaa', b'bbb']), |
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163 (b'unchanged', [b'zz'])]) |
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164 |
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165 def test_null_insert(self): |
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166 m3 = Merge3([], |
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167 [b'aaa', b'bbb'], |
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168 []) |
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170 # to match without zz |
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171 self.assertEqual(list(m3.find_sync_regions()), |
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172 [(0, 0, 2, 2, 0, 0)]) |
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173 |
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174 self.assertEqual(list(m3.merge_regions()), |
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175 [(b'a', 0, 2)]) |
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176 |
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177 self.assertEqual(list(m3.merge_lines()), |
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178 [b'aaa', b'bbb']) |
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179 |
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180 def test_no_conflicts(self): |
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181 """No conflicts because only one side changed""" |
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182 m3 = Merge3([b'aaa', b'bbb'], |
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183 [b'aaa', b'111', b'bbb'], |
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184 [b'aaa', b'bbb']) |
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185 |
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186 self.assertEqual(m3.find_unconflicted(), |
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187 [(0, 1), (1, 2)]) |
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188 |
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189 self.assertEqual(list(m3.find_sync_regions()), |
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190 [(0, 1, 0, 1, 0, 1), |
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191 (1, 2, 2, 3, 1, 2), |
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192 (2, 2, 3, 3, 2, 2)]) |
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193 |
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194 self.assertEqual(list(m3.merge_regions()), |
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195 [(b'unchanged', 0, 1), |
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196 (b'a', 1, 2), |
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197 (b'unchanged', 1, 2)]) |
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198 |
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199 def test_append_a(self): |
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200 m3 = Merge3([b'aaa\n', b'bbb\n'], |
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201 [b'aaa\n', b'bbb\n', b'222\n'], |
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202 [b'aaa\n', b'bbb\n']) |
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203 |
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204 self.assertEqual(b''.join(m3.merge_lines()), |
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205 b'aaa\nbbb\n222\n') |
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206 |
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207 def test_append_b(self): |
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208 m3 = Merge3([b'aaa\n', b'bbb\n'], |
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209 [b'aaa\n', b'bbb\n'], |
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210 [b'aaa\n', b'bbb\n', b'222\n']) |
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211 |
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212 self.assertEqual(b''.join(m3.merge_lines()), |
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213 b'aaa\nbbb\n222\n') |
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214 |
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215 def test_append_agreement(self): |
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216 m3 = Merge3([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 [b'aaa\n', b'bbb\n', b'222\n']) |
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219 |
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220 self.assertEqual(b''.join(m3.merge_lines()), |
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221 b'aaa\nbbb\n222\n') |
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222 |
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223 def test_append_clash(self): |
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224 m3 = Merge3([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'333\n']) |
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227 |
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228 ml = m3.merge_lines(name_a=b'a', |
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229 name_b=b'b', |
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230 start_marker=b'<<', |
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231 mid_marker=b'--', |
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232 end_marker=b'>>') |
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233 self.assertEqual(b''.join(ml), |
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234 b'aaa\n' |
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235 b'bbb\n' |
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236 b'<< a\n' |
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237 b'222\n' |
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238 b'--\n' |
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239 b'333\n' |
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240 b'>> b\n' |
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241 ) |
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242 |
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243 def test_insert_agreement(self): |
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244 m3 = Merge3([b'aaa\n', b'bbb\n'], |
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245 [b'aaa\n', b'222\n', b'bbb\n'], |
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246 [b'aaa\n', b'222\n', b'bbb\n']) |
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247 |
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248 ml = m3.merge_lines(name_a=b'a', |
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249 name_b=b'b', |
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250 start_marker=b'<<', |
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251 mid_marker=b'--', |
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252 end_marker=b'>>') |
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253 self.assertEqual(b''.join(ml), b'aaa\n222\nbbb\n') |
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254 |
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255 |
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256 def test_insert_clash(self): |
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257 """Both try to insert lines in the same place.""" |
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258 m3 = Merge3([b'aaa\n', b'bbb\n'], |
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259 [b'aaa\n', b'111\n', b'bbb\n'], |
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260 [b'aaa\n', b'222\n', b'bbb\n']) |
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261 |
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262 self.assertEqual(m3.find_unconflicted(), |
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263 [(0, 1), (1, 2)]) |
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264 |
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265 self.assertEqual(list(m3.find_sync_regions()), |
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266 [(0, 1, 0, 1, 0, 1), |
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267 (1, 2, 2, 3, 2, 3), |
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268 (2, 2, 3, 3, 3, 3)]) |
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269 |
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270 self.assertEqual(list(m3.merge_regions()), |
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271 [(b'unchanged', 0, 1), |
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272 (b'conflict', 1, 1, 1, 2, 1, 2), |
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273 (b'unchanged', 1, 2)]) |
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274 |
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275 self.assertEqual(list(m3.merge_groups()), |
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276 [(b'unchanged', [b'aaa\n']), |
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277 (b'conflict', [], [b'111\n'], [b'222\n']), |
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278 (b'unchanged', [b'bbb\n']), |
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279 ]) |
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280 |
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281 ml = m3.merge_lines(name_a=b'a', |
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282 name_b=b'b', |
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283 start_marker=b'<<', |
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284 mid_marker=b'--', |
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285 end_marker=b'>>') |
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286 self.assertEqual(b''.join(ml), |
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287 b'''aaa |
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288 << a |
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289 111 |
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290 -- |
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291 222 |
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292 >> b |
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293 bbb |
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294 ''') |
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295 |
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296 def test_replace_clash(self): |
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297 """Both try to insert lines in the same place.""" |
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298 m3 = Merge3([b'aaa', b'000', b'bbb'], |
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299 [b'aaa', b'111', b'bbb'], |
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300 [b'aaa', b'222', b'bbb']) |
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301 |
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302 self.assertEqual(m3.find_unconflicted(), |
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303 [(0, 1), (2, 3)]) |
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304 |
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305 self.assertEqual(list(m3.find_sync_regions()), |
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306 [(0, 1, 0, 1, 0, 1), |
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307 (2, 3, 2, 3, 2, 3), |
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308 (3, 3, 3, 3, 3, 3)]) |
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309 |
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310 def test_replace_multi(self): |
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311 """Replacement with regions of different size.""" |
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312 m3 = Merge3([b'aaa', b'000', b'000', b'bbb'], |
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313 [b'aaa', b'111', b'111', b'111', b'bbb'], |
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314 [b'aaa', b'222', b'222', b'222', b'222', b'bbb']) |
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315 |
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316 self.assertEqual(m3.find_unconflicted(), |
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317 [(0, 1), (3, 4)]) |
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318 |
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319 |
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320 self.assertEqual(list(m3.find_sync_regions()), |
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321 [(0, 1, 0, 1, 0, 1), |
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322 (3, 4, 4, 5, 5, 6), |
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323 (4, 4, 5, 5, 6, 6)]) |
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324 |
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325 def test_merge_poem(self): |
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326 """Test case from diff3 manual""" |
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327 m3 = Merge3(TZU, LAO, TAO) |
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328 ml = list(m3.merge_lines(b'LAO', b'TAO')) |
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329 self.log(b'merge result:') |
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330 self.log(b''.join(ml)) |
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331 self.assertEqual(ml, MERGED_RESULT) |
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332 |
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333 def test_binary(self): |
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334 with self.assertRaises(error.Abort): |
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335 Merge3([b'\x00'], [b'a'], [b'b']) |
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336 |
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337 def test_dos_text(self): |
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338 base_text = b'a\r\n' |
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339 this_text = b'b\r\n' |
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340 other_text = b'c\r\n' |
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341 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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342 this_text.splitlines(True)) |
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343 m_lines = m3.merge_lines(b'OTHER', b'THIS') |
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344 self.assertEqual(b'<<<<<<< OTHER\r\nc\r\n=======\r\nb\r\n' |
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345 b'>>>>>>> THIS\r\n'.splitlines(True), list(m_lines)) |
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346 |
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347 def test_mac_text(self): |
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348 base_text = b'a\r' |
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349 this_text = b'b\r' |
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350 other_text = b'c\r' |
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351 m3 = Merge3(base_text.splitlines(True), other_text.splitlines(True), |
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352 this_text.splitlines(True)) |
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353 m_lines = m3.merge_lines(b'OTHER', b'THIS') |
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354 self.assertEqual(b'<<<<<<< OTHER\rc\r=======\rb\r' |
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355 b'>>>>>>> THIS\r'.splitlines(True), list(m_lines)) |
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356 |
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357 if __name__ == '__main__': |
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358 # hide the timer |
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359 import time |
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360 orig = time.time |
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361 try: |
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362 time.time = lambda: 0 |
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363 unittest.main() |
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364 finally: |
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365 time.time = orig |