Mercurial > hg
annotate tests/test-bdiff.py @ 34192:da2f5f19312c
uncommit: move fb-extension to core which uncommits a changeset
uncommit extension in fb-hgext adds a uncommit command which by default
uncommits a changeset and move all the changes to the working directory. If
file names are passed, uncommit moves the changes from those files to the
working directory and left the changeset with remaining committed files.
The uncommit extension in fb-hgext does not creates an empty commit like the one
in evolve extension unless user has specified ui.alllowemptycommit to True.
The test file added is a combination of tests from test-uncommit.t,
test-uncommit-merge.t and test-uncommit-bookmark.t from fb-hgext.
.. feature::
A new uncommit extension which provides `hg uncommit` using which one can
uncommit part or all of the changeset. This command undoes the effect of a
local commit, returning the affected files to their uncommitted state.
Differential Revision: https://phab.mercurial-scm.org/D529
author | Pulkit Goyal <7895pulkit@gmail.com> |
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date | Thu, 24 Aug 2017 22:55:56 +0530 |
parents | 0c73634d0570 |
children | e05d7c71f209 |
rev | line source |
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1 from __future__ import absolute_import, print_function |
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2 import collections |
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4 import unittest |
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5 |
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6 from mercurial import ( |
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7 mdiff, |
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8 ) |
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9 |
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10 class diffreplace( |
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11 collections.namedtuple('diffreplace', 'start end from_ to')): |
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12 def __repr__(self): |
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13 return 'diffreplace(%r, %r, %r, %r)' % self |
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14 |
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15 class BdiffTests(unittest.TestCase): |
400
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16 |
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17 def assert_bdiff_applies(self, a, b): |
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18 d = mdiff.textdiff(a, b) |
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19 c = a |
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20 if d: |
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21 c = mdiff.patches(a, [d]) |
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22 self.assertEqual( |
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23 c, b, ("bad diff+patch result from\n %r to\n " |
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24 "%r: \nbdiff: %r\npatched: %r" % (a, b, d, c[:200]))) |
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25 |
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26 def assert_bdiff(self, a, b): |
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27 self.assert_bdiff_applies(a, b) |
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28 self.assert_bdiff_applies(b, a) |
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29 |
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30 def test_bdiff_basic(self): |
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31 cases = [ |
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32 ("a\nc\n\n\n\n", "a\nb\n\n\n"), |
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33 ("a\nb\nc\n", "a\nc\n"), |
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34 ("", ""), |
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35 ("a\nb\nc", "a\nb\nc"), |
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36 ("a\nb\nc\nd\n", "a\nd\n"), |
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37 ("a\nb\nc\nd\n", "a\nc\ne\n"), |
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38 ("a\nb\nc\n", "a\nc\n"), |
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39 ("a\n", "c\na\nb\n"), |
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40 ("a\n", ""), |
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41 ("a\n", "b\nc\n"), |
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42 ("a\n", "c\na\n"), |
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43 ("", "adjfkjdjksdhfksj"), |
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44 ("", "ab"), |
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45 ("", "abc"), |
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46 ("a", "a"), |
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47 ("ab", "ab"), |
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48 ("abc", "abc"), |
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49 ("a\n", "a\n"), |
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50 ("a\nb", "a\nb"), |
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51 ] |
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52 for a, b in cases: |
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53 self.assert_bdiff(a, b) |
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54 |
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55 def showdiff(self, a, b): |
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56 bin = mdiff.textdiff(a, b) |
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57 pos = 0 |
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58 q = 0 |
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59 actions = [] |
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60 while pos < len(bin): |
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61 p1, p2, l = struct.unpack(">lll", bin[pos:pos + 12]) |
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62 pos += 12 |
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63 if p1: |
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64 actions.append(a[q:p1]) |
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65 actions.append(diffreplace(p1, p2, a[p1:p2], bin[pos:pos + l])) |
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66 pos += l |
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67 q = p2 |
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68 if q < len(a): |
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69 actions.append(a[q:]) |
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70 return actions |
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71 |
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72 def test_issue1295(self): |
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73 cases = [ |
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74 ("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\nx\n\nz\n", |
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75 ['x\n\nx\n\n', diffreplace(6, 6, '', 'y\n\n'), 'x\n\nx\n\nz\n']), |
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76 ("x\n\nx\n\nx\n\nx\n\nz\n", "x\n\nx\n\ny\n\nx\n\ny\n\nx\n\nz\n", |
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77 ['x\n\nx\n\n', |
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78 diffreplace(6, 6, '', 'y\n\n'), |
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79 'x\n\n', |
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80 diffreplace(9, 9, '', 'y\n\n'), |
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81 'x\n\nz\n']), |
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82 ] |
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83 for old, new, want in cases: |
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84 self.assertEqual(self.showdiff(old, new), want) |
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85 |
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86 def test_issue1295_varies_on_pure(self): |
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87 # we should pick up abbbc. rather than bc.de as the longest match |
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88 got = self.showdiff("a\nb\nb\nb\nc\n.\nd\ne\n.\nf\n", |
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89 "a\nb\nb\na\nb\nb\nb\nc\n.\nb\nc\n.\nd\ne\nf\n") |
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90 want_c = ['a\nb\nb\n', |
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91 diffreplace(6, 6, '', 'a\nb\nb\nb\nc\n.\n'), |
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92 'b\nc\n.\nd\ne\n', |
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93 diffreplace(16, 18, '.\n', ''), |
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94 'f\n'] |
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95 want_pure = [diffreplace(0, 0, '', 'a\nb\nb\n'), |
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96 'a\nb\nb\nb\nc\n.\n', |
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97 diffreplace(12, 12, '', 'b\nc\n.\n'), |
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98 'd\ne\n', |
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99 diffreplace(16, 18, '.\n', ''), 'f\n'] |
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100 self.assert_(got in (want_c, want_pure), |
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101 'got: %r, wanted either %r or %r' % ( |
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102 got, want_c, want_pure)) |
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103 |
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104 def test_fixws(self): |
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105 cases = [ |
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106 (" \ta\r b\t\n", "ab\n", 1), |
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107 (" \ta\r b\t\n", " a b\n", 0), |
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108 ("", "", 1), |
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109 ("", "", 0), |
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110 ] |
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111 for a, b, allws in cases: |
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112 c = mdiff.fixws(a, allws) |
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113 self.assertEqual( |
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114 c, b, 'fixws(%r) want %r got %r (allws=%r)' % (a, b, c, allws)) |
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115 |
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116 def test_nice_diff_for_trivial_change(self): |
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117 self.assertEqual(self.showdiff( |
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118 ''.join('<%s\n-\n' % i for i in range(5)), |
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119 ''.join('>%s\n-\n' % i for i in range(5))), |
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120 [diffreplace(0, 3, '<0\n', '>0\n'), |
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121 '-\n', |
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122 diffreplace(5, 8, '<1\n', '>1\n'), |
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123 '-\n', |
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124 diffreplace(10, 13, '<2\n', '>2\n'), |
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125 '-\n', |
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126 diffreplace(15, 18, '<3\n', '>3\n'), |
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127 '-\n', |
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128 diffreplace(20, 23, '<4\n', '>4\n'), |
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129 '-\n']) |
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130 |
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131 def test_prefer_appending(self): |
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132 # 1 line to 3 lines |
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133 self.assertEqual(self.showdiff('a\n', 'a\n' * 3), |
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134 ['a\n', diffreplace(2, 2, '', 'a\na\n')]) |
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135 # 1 line to 5 lines |
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136 self.assertEqual(self.showdiff('a\n', 'a\n' * 5), |
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137 ['a\n', diffreplace(2, 2, '', 'a\na\na\na\n')]) |
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138 |
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139 def test_prefer_removing_trailing(self): |
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140 # 3 lines to 1 line |
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141 self.assertEqual(self.showdiff('a\n' * 3, 'a\n'), |
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142 ['a\n', diffreplace(2, 6, 'a\na\n', '')]) |
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143 # 5 lines to 1 line |
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144 self.assertEqual(self.showdiff('a\n' * 5, 'a\n'), |
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145 ['a\n', diffreplace(2, 10, 'a\na\na\na\n', '')]) |
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146 |
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147 if __name__ == '__main__': |
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148 import silenttestrunner |
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149 silenttestrunner.main(__name__) |