Andrew's git / gitweb.git / t/t6044-merge-unrelated-index-changes.sh
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t / t6044-merge-unrelated-index-changes.shon commit t3903: abstract away SHA-1-specific constants (c784815)
   1#!/bin/sh
   2
   3test_description="merges with unrelated index changes"
   4
   5. ./test-lib.sh
   6
   7# Testcase for some simple merges
   8#   A
   9#   o-------o B
  10#    \
  11#     \-----o C
  12#      \
  13#       \---o D
  14#        \
  15#         \-o E
  16#          \
  17#           o F
  18#   Commit A: some file a
  19#   Commit B: adds file b, modifies end of a
  20#   Commit C: adds file c
  21#   Commit D: adds file d, modifies beginning of a
  22#   Commit E: renames a->subdir/a, adds subdir/e
  23#   Commit F: empty commit
  24
  25test_expect_success 'setup trivial merges' '
  26        test_seq 1 10 >a &&
  27        git add a &&
  28        test_tick && git commit -m A &&
  29
  30        git branch A &&
  31        git branch B &&
  32        git branch C &&
  33        git branch D &&
  34        git branch E &&
  35        git branch F &&
  36
  37        git checkout B &&
  38        echo b >b &&
  39        echo 11 >>a &&
  40        git add a b &&
  41        test_tick && git commit -m B &&
  42
  43        git checkout C &&
  44        echo c >c &&
  45        git add c &&
  46        test_tick && git commit -m C &&
  47
  48        git checkout D &&
  49        test_seq 2 10 >a &&
  50        echo d >d &&
  51        git add a d &&
  52        test_tick && git commit -m D &&
  53
  54        git checkout E &&
  55        mkdir subdir &&
  56        git mv a subdir/a &&
  57        echo e >subdir/e &&
  58        git add subdir &&
  59        test_tick && git commit -m E &&
  60
  61        git checkout F &&
  62        test_tick && git commit --allow-empty -m F
  63'
  64
  65test_expect_success 'ff update' '
  66        git reset --hard &&
  67        git checkout A^0 &&
  68
  69        touch random_file && git add random_file &&
  70
  71        git merge E^0 &&
  72
  73        test_must_fail git rev-parse HEAD:random_file &&
  74        test "$(git diff --name-only --cached E)" = "random_file"
  75'
  76
  77test_expect_success 'ff update, important file modified' '
  78        git reset --hard &&
  79        git checkout A^0 &&
  80
  81        mkdir subdir &&
  82        touch subdir/e &&
  83        git add subdir/e &&
  84
  85        test_must_fail git merge E^0 &&
  86        test_path_is_missing .git/MERGE_HEAD
  87'
  88
  89test_expect_success 'resolve, trivial' '
  90        git reset --hard &&
  91        git checkout B^0 &&
  92
  93        touch random_file && git add random_file &&
  94
  95        test_must_fail git merge -s resolve C^0 &&
  96        test_path_is_missing .git/MERGE_HEAD
  97'
  98
  99test_expect_success 'resolve, non-trivial' '
 100        git reset --hard &&
 101        git checkout B^0 &&
 102
 103        touch random_file && git add random_file &&
 104
 105        test_must_fail git merge -s resolve D^0 &&
 106        test_path_is_missing .git/MERGE_HEAD
 107'
 108
 109test_expect_success 'recursive' '
 110        git reset --hard &&
 111        git checkout B^0 &&
 112
 113        touch random_file && git add random_file &&
 114
 115        test_must_fail git merge -s recursive C^0 &&
 116        test_path_is_missing .git/MERGE_HEAD
 117'
 118
 119test_expect_success 'recursive, when merge branch matches merge base' '
 120        git reset --hard &&
 121        git checkout B^0 &&
 122
 123        touch random_file && git add random_file &&
 124
 125        test_must_fail git merge -s recursive F^0 &&
 126        test_path_is_missing .git/MERGE_HEAD
 127'
 128
 129test_expect_success 'merge-recursive, when index==head but head!=HEAD' '
 130        git reset --hard &&
 131        git checkout C^0 &&
 132
 133        # Make index match B
 134        git diff C B -- | git apply --cached &&
 135        # Merge B & F, with B as "head"
 136        git merge-recursive A -- B F > out &&
 137        test_i18ngrep "Already up to date" out
 138'
 139
 140test_expect_success 'recursive, when file has staged changes not matching HEAD nor what a merge would give' '
 141        git reset --hard &&
 142        git checkout B^0 &&
 143
 144        mkdir subdir &&
 145        test_seq 1 10 >subdir/a &&
 146        git add subdir/a &&
 147
 148        # We have staged changes; merge should error out
 149        test_must_fail git merge -s recursive E^0 2>err &&
 150        test_i18ngrep "changes to the following files would be overwritten" err
 151'
 152
 153test_expect_success 'recursive, when file has staged changes matching what a merge would give' '
 154        git reset --hard &&
 155        git checkout B^0 &&
 156
 157        mkdir subdir &&
 158        test_seq 1 11 >subdir/a &&
 159        git add subdir/a &&
 160
 161        # We have staged changes; merge should error out
 162        test_must_fail git merge -s recursive E^0 2>err &&
 163        test_i18ngrep "changes to the following files would be overwritten" err
 164'
 165
 166test_expect_success 'octopus, unrelated file touched' '
 167        git reset --hard &&
 168        git checkout B^0 &&
 169
 170        touch random_file && git add random_file &&
 171
 172        test_must_fail git merge C^0 D^0 &&
 173        test_path_is_missing .git/MERGE_HEAD
 174'
 175
 176test_expect_success 'octopus, related file removed' '
 177        git reset --hard &&
 178        git checkout B^0 &&
 179
 180        git rm b &&
 181
 182        test_must_fail git merge C^0 D^0 &&
 183        test_path_is_missing .git/MERGE_HEAD
 184'
 185
 186test_expect_success 'octopus, related file modified' '
 187        git reset --hard &&
 188        git checkout B^0 &&
 189
 190        echo 12 >>a && git add a &&
 191
 192        test_must_fail git merge C^0 D^0 &&
 193        test_path_is_missing .git/MERGE_HEAD
 194'
 195
 196test_expect_success 'ours' '
 197        git reset --hard &&
 198        git checkout B^0 &&
 199
 200        touch random_file && git add random_file &&
 201
 202        test_must_fail git merge -s ours C^0 &&
 203        test_path_is_missing .git/MERGE_HEAD
 204'
 205
 206test_expect_success 'subtree' '
 207        git reset --hard &&
 208        git checkout B^0 &&
 209
 210        touch random_file && git add random_file &&
 211
 212        test_must_fail git merge -s subtree E^0 &&
 213        test_path_is_missing .git/MERGE_HEAD
 214'
 215
 216test_done