submodule.c: migrate diff output to use emit_diff_symbol

diff --git a/t/t1401-symbolic-ref.sh b/t/t1401-symbolic-ref.sh
index 64968b789161bb5b88be59a80348a29924d26208..eec3e90f9c04e9b88ebb8c2ee6f12b96b75bac2b 100755 (executable)
--- a/t/t1401-symbolic-ref.sh
+++ b/t/t1401-symbolic-ref.sh
@@ -29,22 +29,29 @@ reset_to_sane
 
 test_expect_success 'symbolic-ref refuses bare sha1' '
        echo content >file && git add file && git commit -m one &&
-       test_must_fail git symbolic-ref HEAD `git rev-parse HEAD`
+       test_must_fail git symbolic-ref HEAD $(git rev-parse HEAD)
 '
 reset_to_sane
 
-test_expect_success 'symbolic-ref deletes HEAD' '
-       git symbolic-ref -d HEAD &&
+test_expect_success 'HEAD cannot be removed' '
+       test_must_fail git symbolic-ref -d HEAD
+'
+
+reset_to_sane
+
+test_expect_success 'symbolic-ref can be deleted' '
+       git symbolic-ref NOTHEAD refs/heads/foo &&
+       git symbolic-ref -d NOTHEAD &&
        test_path_is_file .git/refs/heads/foo &&
-       test_path_is_missing .git/HEAD
+       test_path_is_missing .git/NOTHEAD
 '
 reset_to_sane
 
-test_expect_success 'symbolic-ref deletes dangling HEAD' '
-       git symbolic-ref HEAD refs/heads/missing &&
-       git symbolic-ref -d HEAD &&
+test_expect_success 'symbolic-ref can delete dangling symref' '
+       git symbolic-ref NOTHEAD refs/heads/missing &&
+       git symbolic-ref -d NOTHEAD &&
        test_path_is_missing .git/refs/heads/missing &&
-       test_path_is_missing .git/HEAD
+       test_path_is_missing .git/NOTHEAD
 '
 reset_to_sane
 
@@ -63,6 +70,35 @@ test_expect_success 'symbolic-ref fails to delete real ref' '
 '
 reset_to_sane
 
+test_expect_success 'create large ref name' '
+       # make 256+ character ref; some systems may not handle that,
+       # so be gentle
+       long=0123456789abcdef &&
+       long=$long/$long/$long/$long &&
+       long=$long/$long/$long/$long &&
+       long_ref=refs/heads/$long &&
+       tree=$(git write-tree) &&
+       commit=$(echo foo | git commit-tree $tree) &&
+       if git update-ref $long_ref $commit; then
+               test_set_prereq LONG_REF
+       else
+               echo >&2 "long refs not supported"
+       fi
+'
+
+test_expect_success LONG_REF 'symbolic-ref can point to large ref name' '
+       git symbolic-ref HEAD $long_ref &&
+       echo $long_ref >expect &&
+       git symbolic-ref HEAD >actual &&
+       test_cmp expect actual
+'
+
+test_expect_success LONG_REF 'we can parse long symbolic ref' '
+       echo $commit >expect &&
+       git rev-parse --verify HEAD >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'symbolic-ref reports failure in exit code' '
        test_when_finished "rm -f .git/HEAD.lock" &&
        >.git/HEAD.lock &&
@@ -81,8 +117,23 @@ test_expect_success 'symbolic-ref writes reflog entry' '
        update
        create
        EOF
-       git log --format=%gs -g >actual &&
+       git log --format=%gs -g -2 >actual &&
        test_cmp expect actual
 '
 
+test_expect_success 'symbolic-ref does not create ref d/f conflicts' '
+       git checkout -b df &&
+       test_commit df &&
+       test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df &&
+       git pack-refs --all --prune &&
+       test_must_fail git symbolic-ref refs/heads/df/conflict refs/heads/df
+'
+
+test_expect_success 'symbolic-ref handles existing pointer to invalid name' '
+       head=$(git rev-parse HEAD) &&
+       git symbolic-ref HEAD refs/heads/outer &&
+       git update-ref refs/heads/outer/inner $head &&
+       git symbolic-ref HEAD refs/heads/unrelated
+'
+
 test_done