t/t7110-reset-merge.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2009 Christian Couder
   4 #
   5
   6 test_description='Tests for "git reset" with "--merge" and "--keep" options'
   7
   8 . ./test-lib.sh
   9
  10 test_expect_success setup '
  11     for i in 1 2 3; do echo line $i; done >file1 &&
  12     cat file1 >file2 &&
  13     git add file1 file2 &&
  14     test_tick &&
  15     git commit -m "Initial commit" &&
  16     git tag initial &&
  17     echo line 4 >>file1 &&
  18     cat file1 >file2 &&
  19     test_tick &&
  20     git commit -m "add line 4 to file1" file1 &&
  21     git tag second
  22 '
  23
  24 # The next test will test the following:
  25 #
  26 #           working index HEAD target         working index HEAD
  27 #           ----------------------------------------------------
  28 # file1:     C       C     C    D     --merge  D       D     D
  29 # file2:     C       D     D    D     --merge  C       D     D
  30 test_expect_success 'reset --merge is ok with changes in file it does not touch' '
  31     git reset --merge HEAD^ &&
  32     ! grep 4 file1 &&
  33     grep 4 file2 &&
  34     test "$(git rev-parse HEAD)" = "$(git rev-parse initial)" &&
  35     test -z "$(git diff --cached)"
  36 '
  37
  38 test_expect_success 'reset --merge is ok when switching back' '
  39     git reset --merge second &&
  40     grep 4 file1 &&
  41     grep 4 file2 &&
  42     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
  43     test -z "$(git diff --cached)"
  44 '
  45
  46 # The next test will test the following:
  47 #
  48 #           working index HEAD target         working index HEAD
  49 #           ----------------------------------------------------
  50 # file1:     C       C     C    D     --keep   D       D     D
  51 # file2:     C       D     D    D     --keep   C       D     D
  52 test_expect_success 'reset --keep is ok with changes in file it does not touch' '
  53     git reset --hard second &&
  54     cat file1 >file2 &&
  55     git reset --keep HEAD^ &&
  56     ! grep 4 file1 &&
  57     grep 4 file2 &&
  58     test "$(git rev-parse HEAD)" = "$(git rev-parse initial)" &&
  59     test -z "$(git diff --cached)"
  60 '
  61
  62 test_expect_success 'reset --keep is ok when switching back' '
  63     git reset --keep second &&
  64     grep 4 file1 &&
  65     grep 4 file2 &&
  66     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
  67     test -z "$(git diff --cached)"
  68 '
  69
  70 # The next test will test the following:
  71 #
  72 #           working index HEAD target         working index HEAD
  73 #           ----------------------------------------------------
  74 # file1:     B       B     C    D     --merge  D       D     D
  75 # file2:     C       D     D    D     --merge  C       D     D
  76 test_expect_success 'reset --merge discards changes added to index (1)' '
  77     git reset --hard second &&
  78     cat file1 >file2 &&
  79     echo "line 5" >> file1 &&
  80     git add file1 &&
  81     git reset --merge HEAD^ &&
  82     ! grep 4 file1 &&
  83     ! grep 5 file1 &&
  84     grep 4 file2 &&
  85     test "$(git rev-parse HEAD)" = "$(git rev-parse initial)" &&
  86     test -z "$(git diff --cached)"
  87 '
  88
  89 test_expect_success 'reset --merge is ok again when switching back (1)' '
  90     git reset --hard initial &&
  91     echo "line 5" >> file2 &&
  92     git add file2 &&
  93     git reset --merge second &&
  94     ! grep 4 file2 &&
  95     ! grep 5 file1 &&
  96     grep 4 file1 &&
  97     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
  98     test -z "$(git diff --cached)"
  99 '
 100
 101 # The next test will test the following:
 102 #
 103 #           working index HEAD target         working index HEAD
 104 #           ----------------------------------------------------
 105 # file1:     B       B     C    D     --keep   (disallowed)
 106 test_expect_success 'reset --keep fails with changes in index in files it touches' '
 107     git reset --hard second &&
 108     echo "line 5" >> file1 &&
 109     git add file1 &&
 110     test_must_fail git reset --keep HEAD^
 111 '
 112
 113 # The next test will test the following:
 114 #
 115 #           working index HEAD target         working index HEAD
 116 #           ----------------------------------------------------
 117 # file1:     C       C     C    D     --merge  D       D     D
 118 # file2:     C       C     D    D     --merge  D       D     D
 119 test_expect_success 'reset --merge discards changes added to index (2)' '
 120     git reset --hard second &&
 121     echo "line 4" >> file2 &&
 122     git add file2 &&
 123     git reset --merge HEAD^ &&
 124     ! grep 4 file2 &&
 125     test "$(git rev-parse HEAD)" = "$(git rev-parse initial)" &&
 126     test -z "$(git diff)" &&
 127     test -z "$(git diff --cached)"
 128 '
 129
 130 test_expect_success 'reset --merge is ok again when switching back (2)' '
 131     git reset --hard initial &&
 132     git reset --merge second &&
 133     ! grep 4 file2 &&
 134     grep 4 file1 &&
 135     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
 136     test -z "$(git diff --cached)"
 137 '
 138
 139 # The next test will test the following:
 140 #
 141 #           working index HEAD target         working index HEAD
 142 #           ----------------------------------------------------
 143 # file1:     C       C     C    D     --keep   D       D     D
 144 # file2:     C       C     D    D     --keep   C       D     D
 145 test_expect_success 'reset --keep keeps changes it does not touch' '
 146     git reset --hard second &&
 147     echo "line 4" >> file2 &&
 148     git add file2 &&
 149     git reset --keep HEAD^ &&
 150     grep 4 file2 &&
 151     test "$(git rev-parse HEAD)" = "$(git rev-parse initial)" &&
 152     test -z "$(git diff --cached)"
 153 '
 154
 155 test_expect_success 'reset --keep keeps changes when switching back' '
 156     git reset --keep second &&
 157     grep 4 file2 &&
 158     grep 4 file1 &&
 159     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
 160     test -z "$(git diff --cached)"
 161 '
 162
 163 # The next test will test the following:
 164 #
 165 #           working index HEAD target         working index HEAD
 166 #           ----------------------------------------------------
 167 # file1:     A       B     B    C     --merge  (disallowed)
 168 test_expect_success 'reset --merge fails with changes in file it touches' '
 169     git reset --hard second &&
 170     echo "line 5" >> file1 &&
 171     test_tick &&
 172     git commit -m "add line 5" file1 &&
 173     sed -e "s/line 1/changed line 1/" <file1 >file3 &&
 174     mv file3 file1 &&
 175     test_must_fail git reset --merge HEAD^ 2>err.log &&
 176     grep file1 err.log | grep "not uptodate"
 177 '
 178
 179 # The next test will test the following:
 180 #
 181 #           working index HEAD target         working index HEAD
 182 #           ----------------------------------------------------
 183 # file1:     A       B     B    C     --keep   (disallowed)
 184 test_expect_success 'reset --keep fails with changes in file it touches' '
 185     git reset --hard second &&
 186     echo "line 5" >> file1 &&
 187     test_tick &&
 188     git commit -m "add line 5" file1 &&
 189     sed -e "s/line 1/changed line 1/" <file1 >file3 &&
 190     mv file3 file1 &&
 191     test_must_fail git reset --keep HEAD^ 2>err.log &&
 192     grep file1 err.log | grep "not uptodate"
 193 '
 194
 195 test_expect_success 'setup 3 different branches' '
 196     git reset --hard second &&
 197     git branch branch1 &&
 198     git branch branch2 &&
 199     git branch branch3 &&
 200     git checkout branch1 &&
 201     echo "line 5 in branch1" >> file1 &&
 202     test_tick &&
 203     git commit -a -m "change in branch1" &&
 204     git checkout branch2 &&
 205     echo "line 5 in branch2" >> file1 &&
 206     test_tick &&
 207     git commit -a -m "change in branch2" &&
 208     git tag third &&
 209     git checkout branch3 &&
 210     echo a new file >file3 &&
 211     rm -f file1 &&
 212     git add file3 &&
 213     test_tick &&
 214     git commit -a -m "change in branch3"
 215 '
 216
 217 # The next test will test the following:
 218 #
 219 #           working index HEAD target         working index HEAD
 220 #           ----------------------------------------------------
 221 # file1:     X       U     B    C     --merge  C       C     C
 222 test_expect_success '"reset --merge HEAD^" is ok with pending merge' '
 223     git checkout third &&
 224     test_must_fail git merge branch1 &&
 225     git reset --merge HEAD^ &&
 226     test "$(git rev-parse HEAD)" = "$(git rev-parse second)" &&
 227     test -z "$(git diff --cached)" &&
 228     test -z "$(git diff)"
 229 '
 230
 231 # The next test will test the following:
 232 #
 233 #           working index HEAD target         working index HEAD
 234 #           ----------------------------------------------------
 235 # file1:     X       U     B    C     --keep   (disallowed)
 236 test_expect_success '"reset --keep HEAD^" fails with pending merge' '
 237     git reset --hard third &&
 238     test_must_fail git merge branch1 &&
 239     test_must_fail git reset --keep HEAD^ 2>err.log &&
 240     grep "middle of a merge" err.log
 241 '
 242
 243 # The next test will test the following:
 244 #
 245 #           working index HEAD target         working index HEAD
 246 #           ----------------------------------------------------
 247 # file1:     X       U     B    B     --merge  B       B     B
 248 test_expect_success '"reset --merge HEAD" is ok with pending merge' '
 249     git reset --hard third &&
 250     test_must_fail git merge branch1 &&
 251     git reset --merge HEAD &&
 252     test "$(git rev-parse HEAD)" = "$(git rev-parse third)" &&
 253     test -z "$(git diff --cached)" &&
 254     test -z "$(git diff)"
 255 '
 256
 257 # The next test will test the following:
 258 #
 259 #           working index HEAD target         working index HEAD
 260 #           ----------------------------------------------------
 261 # file1:     X       U     B    B     --keep   (disallowed)
 262 test_expect_success '"reset --keep HEAD" fails with pending merge' '
 263     git reset --hard third &&
 264     test_must_fail git merge branch1 &&
 265     test_must_fail git reset --keep HEAD 2>err.log &&
 266     grep "middle of a merge" err.log
 267 '
 268
 269 test_expect_success '--merge is ok with added/deleted merge' '
 270     git reset --hard third &&
 271     rm -f file2 &&
 272     test_must_fail git merge branch3 &&
 273     ! test -f file2 &&
 274     test -f file3 &&
 275     git diff --exit-code file3 &&
 276     git diff --exit-code branch3 file3 &&
 277     git reset --merge HEAD &&
 278     ! test -f file3 &&
 279     ! test -f file2 &&
 280     git diff --exit-code --cached
 281 '
 282
 283 test_expect_success '--keep fails with added/deleted merge' '
 284     git reset --hard third &&
 285     rm -f file2 &&
 286     test_must_fail git merge branch3 &&
 287     ! test -f file2 &&
 288     test -f file3 &&
 289     git diff --exit-code file3 &&
 290     git diff --exit-code branch3 file3 &&
 291     test_must_fail git reset --keep HEAD 2>err.log &&
 292     grep "middle of a merge" err.log
 293 '
 294
 295 test_done