t/t1401-symbolic-ref.sh

   1 #!/bin/sh
   2
   3 test_description='basic symbolic-ref tests'
   4 . ./test-lib.sh
   5
   6 # If the tests munging HEAD fail, they can break detection of
   7 # the git repo, meaning that further tests will operate on
   8 # the surrounding git repo instead of the trash directory.
   9 reset_to_sane() {
  10         rm -rf .git &&
  11         "$TAR" xf .git.tar
  12 }
  13
  14 test_expect_success 'setup' '
  15         git symbolic-ref HEAD refs/heads/foo &&
  16         test_commit file &&
  17         "$TAR" cf .git.tar .git/
  18 '
  19
  20 test_expect_success 'symbolic-ref read/write roundtrip' '
  21         git symbolic-ref HEAD refs/heads/read-write-roundtrip &&
  22         echo refs/heads/read-write-roundtrip >expect &&
  23         git symbolic-ref HEAD >actual &&
  24         test_cmp expect actual
  25 '
  26
  27 test_expect_success 'symbolic-ref refuses non-ref for HEAD' '
  28         test_must_fail git symbolic-ref HEAD foo
  29 '
  30
  31 reset_to_sane
  32
  33 test_expect_success 'symbolic-ref refuses bare sha1' '
  34         test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD)
  35 '
  36
  37 reset_to_sane
  38
  39 test_expect_success 'HEAD cannot be removed' '
  40         test_must_fail git symbolic-ref -d HEAD
  41 '
  42
  43 reset_to_sane
  44
  45 test_expect_success 'symbolic-ref can be deleted' '
  46         git symbolic-ref NOTHEAD refs/heads/foo &&
  47         git symbolic-ref -d NOTHEAD &&
  48         git rev-parse refs/heads/foo &&
  49         test_must_fail git symbolic-ref NOTHEAD
  50 '
  51 reset_to_sane
  52
  53 test_expect_success 'symbolic-ref can delete dangling symref' '
  54         git symbolic-ref NOTHEAD refs/heads/missing &&
  55         git symbolic-ref -d NOTHEAD &&
  56         test_must_fail git rev-parse refs/heads/missing &&
  57         test_must_fail git symbolic-ref NOTHEAD
  58 '
  59 reset_to_sane
  60
  61 test_expect_success 'symbolic-ref fails to delete missing FOO' '
  62         echo "fatal: Cannot delete FOO, not a symbolic ref" >expect &&
  63         test_must_fail git symbolic-ref -d FOO >actual 2>&1 &&
  64         test_cmp expect actual
  65 '
  66 reset_to_sane
  67
  68 test_expect_success 'symbolic-ref fails to delete real ref' '
  69         echo "fatal: Cannot delete refs/heads/foo, not a symbolic ref" >expect &&
  70         test_must_fail git symbolic-ref -d refs/heads/foo >actual 2>&1 &&
  71         git rev-parse --verify refs/heads/foo &&
  72         test_cmp expect actual
  73 '
  74 reset_to_sane
  75
  76 test_expect_success 'create large ref name' '
  77         # make 256+ character ref; some systems may not handle that,
  78         # so be gentle
  79         long=0123456789abcdef &&
  80         long=$long/$long/$long/$long &&
  81         long=$long/$long/$long/$long &&
  82         long_ref=refs/heads/$long &&
  83         tree=$(git write-tree) &&
  84         commit=$(echo foo | git commit-tree $tree) &&
  85         if git update-ref $long_ref $commit; then
  86                 test_set_prereq LONG_REF
  87         else
  88                 echo >&2 "long refs not supported"
  89         fi
  90 '
  91
  92 test_expect_success LONG_REF 'symbolic-ref can point to large ref name' '
  93         git symbolic-ref HEAD $long_ref &&
  94         echo $long_ref >expect &&
  95         git symbolic-ref HEAD >actual &&
  96         test_cmp expect actual
  97 '
  98
  99 test_expect_success LONG_REF 'we can parse long symbolic ref' '
 100         echo $commit >expect &&
 101         git rev-parse --verify HEAD >actual &&
 102         test_cmp expect actual
 103 '
 104
 105 test_expect_success 'symbolic-ref reports failure in exit code' '
 106         test_when_finished "rm -f .git/HEAD.lock" &&
 107         >.git/HEAD.lock &&
 108         test_must_fail git symbolic-ref HEAD refs/heads/whatever
 109 '
 110
 111 test_expect_success 'symbolic-ref writes reflog entry' '
 112         git checkout -b log1 &&
 113         test_commit one &&
 114         git checkout -b log2  &&
 115         test_commit two &&
 116         git checkout --orphan orphan &&
 117         git symbolic-ref -m create HEAD refs/heads/log1 &&
 118         git symbolic-ref -m update HEAD refs/heads/log2 &&
 119         cat >expect <<-\EOF &&
 120         update
 121         create
 122         EOF
 123         git log --format=%gs -g -2 >actual &&
 124         test_cmp expect actual
 125 '
 126
 127 test_expect_success 'symbolic-ref does not create ref d/f conflicts' '
 128         git checkout -b df &&
 129         test_commit df &&
 130         test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df &&
 131         git pack-refs --all --prune &&
 132         test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df
 133 '
 134
 135 test_expect_success 'symbolic-ref can overwrite pointer to invalid name' '
 136         test_when_finished reset_to_sane &&
 137         head=$(git rev-parse HEAD) &&
 138         git symbolic-ref HEAD refs/heads/outer &&
 139         test_when_finished "git update-ref -d refs/heads/outer/inner" &&
 140         git update-ref refs/heads/outer/inner $head &&
 141         git symbolic-ref HEAD refs/heads/unrelated
 142 '
 143
 144 test_expect_success 'symbolic-ref can resolve d/f name (EISDIR)' '
 145         test_when_finished reset_to_sane &&
 146         head=$(git rev-parse HEAD) &&
 147         git symbolic-ref HEAD refs/heads/outer/inner &&
 148         test_when_finished "git update-ref -d refs/heads/outer" &&
 149         git update-ref refs/heads/outer $head &&
 150         echo refs/heads/outer/inner >expect &&
 151         git symbolic-ref HEAD >actual &&
 152         test_cmp expect actual
 153 '
 154
 155 test_expect_success 'symbolic-ref can resolve d/f name (ENOTDIR)' '
 156         test_when_finished reset_to_sane &&
 157         head=$(git rev-parse HEAD) &&
 158         git symbolic-ref HEAD refs/heads/outer &&
 159         test_when_finished "git update-ref -d refs/heads/outer/inner" &&
 160         git update-ref refs/heads/outer/inner $head &&
 161         echo refs/heads/outer >expect &&
 162         git symbolic-ref HEAD >actual &&
 163         test_cmp expect actual
 164 '
 165
 166 test_done