t/t4108-apply-threeway.sh

   1 #!/bin/sh
   2
   3 test_description='git apply --3way'
   4
   5 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
   6 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
   7
   8 . ./test-lib.sh
   9
  10 print_sanitized_conflicted_diff () {
  11         git diff HEAD >diff.raw &&
  12         sed -e '
  13                 /^index /d
  14                 s/^\(+[<>|][<>|][<>|][<>|]*\) .*/\1/
  15         ' diff.raw
  16 }
  17
  18 test_expect_success setup '
  19         test_tick &&
  20         test_write_lines 1 2 3 4 5 6 7 >one &&
  21         cat one >two &&
  22         git add one two &&
  23         git commit -m initial &&
  24
  25         git branch side &&
  26
  27         test_tick &&
  28         test_write_lines 1 two 3 4 5 six 7 >one &&
  29         test_write_lines 1 two 3 4 5 6 7 >two &&
  30         git commit -a -m main &&
  31
  32         git checkout side &&
  33         test_write_lines 1 2 3 4 five 6 7 >one &&
  34         test_write_lines 1 2 3 4 five 6 7 >two &&
  35         git commit -a -m side &&
  36
  37         git checkout main
  38 '
  39
  40 test_expect_success 'apply without --3way' '
  41         git diff side^ side >P.diff &&
  42
  43         # should fail to apply
  44         git reset --hard &&
  45         git checkout main^0 &&
  46         test_must_fail git apply --index P.diff &&
  47         # should leave things intact
  48         git diff-files --exit-code &&
  49         git diff-index --exit-code --cached HEAD
  50 '
  51
  52 test_apply_with_3way () {
  53         # Merging side should be similar to applying this patch
  54         git diff ...side >P.diff &&
  55
  56         # The corresponding conflicted merge
  57         git reset --hard &&
  58         git checkout main^0 &&
  59         test_must_fail git merge --no-commit side &&
  60         git ls-files -s >expect.ls &&
  61         print_sanitized_conflicted_diff >expect.diff &&
  62
  63         # should fail to apply
  64         git reset --hard &&
  65         git checkout main^0 &&
  66         test_must_fail git apply --index --3way P.diff &&
  67         git ls-files -s >actual.ls &&
  68         print_sanitized_conflicted_diff >actual.diff &&
  69
  70         # The result should resemble the corresponding merge
  71         test_cmp expect.ls actual.ls &&
  72         test_cmp expect.diff actual.diff
  73 }
  74
  75 test_expect_success 'apply with --3way' '
  76         test_apply_with_3way
  77 '
  78
  79 test_expect_success 'apply with --3way with merge.conflictStyle = diff3' '
  80         test_config merge.conflictStyle diff3 &&
  81         test_apply_with_3way
  82 '
  83
  84 test_expect_success 'apply with --3way with rerere enabled' '
  85         test_config rerere.enabled true &&
  86
  87         # Merging side should be similar to applying this patch
  88         git diff ...side >P.diff &&
  89
  90         # The corresponding conflicted merge
  91         git reset --hard &&
  92         git checkout main^0 &&
  93         test_must_fail git merge --no-commit side &&
  94
  95         # Manually resolve and record the resolution
  96         test_write_lines 1 two 3 4 five six 7 >one &&
  97         git rerere &&
  98         cat one >expect &&
  99
 100         # should fail to apply
 101         git reset --hard &&
 102         git checkout main^0 &&
 103         test_must_fail git apply --index --3way P.diff &&
 104
 105         # but rerere should have replayed the recorded resolution
 106         test_cmp expect one
 107 '
 108
 109 test_expect_success 'apply -3 with add/add conflict setup' '
 110         git reset --hard &&
 111
 112         git checkout -b adder &&
 113         test_write_lines 1 2 3 4 5 6 7 >three &&
 114         test_write_lines 1 2 3 4 5 6 7 >four &&
 115         git add three four &&
 116         git commit -m "add three and four" &&
 117
 118         git checkout -b another adder^ &&
 119         test_write_lines 1 2 3 4 5 6 7 >three &&
 120         test_write_lines 1 2 3 four 5 6 7 >four &&
 121         git add three four &&
 122         git commit -m "add three and four" &&
 123
 124         # Merging another should be similar to applying this patch
 125         git diff adder...another >P.diff &&
 126
 127         git checkout adder^0 &&
 128         test_must_fail git merge --no-commit another &&
 129         git ls-files -s >expect.ls &&
 130         print_sanitized_conflicted_diff >expect.diff
 131 '
 132
 133 test_expect_success 'apply -3 with add/add conflict' '
 134         # should fail to apply ...
 135         git reset --hard &&
 136         git checkout adder^0 &&
 137         test_must_fail git apply --index --3way P.diff &&
 138         # ... and leave conflicts in the index and in the working tree
 139         git ls-files -s >actual.ls &&
 140         print_sanitized_conflicted_diff >actual.diff &&
 141
 142         # The result should resemble the corresponding merge
 143         test_cmp expect.ls actual.ls &&
 144         test_cmp expect.diff actual.diff
 145 '
 146
 147 test_expect_success 'apply -3 with add/add conflict (dirty working tree)' '
 148         # should fail to apply ...
 149         git reset --hard &&
 150         git checkout adder^0 &&
 151         echo >>four &&
 152         cat four >four.save &&
 153         cat three >three.save &&
 154         git ls-files -s >expect.ls &&
 155         test_must_fail git apply --index --3way P.diff &&
 156         # ... and should not touch anything
 157         git ls-files -s >actual.ls &&
 158         test_cmp expect.ls actual.ls &&
 159         test_cmp four.save four &&
 160         test_cmp three.save three
 161 '
 162
 163 test_done