http: extract type/subtype portion of content-type

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index 6ffd82fe321cd3154d6f193c21198218e762f1b2..e130c528fe5a0115c99b1203cfe9dced046cece3 100755 (executable)
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -820,7 +820,18 @@ test_expect_success 'stdin -z update ref fails with bad old value' '
        test_must_fail git rev-parse --verify -q $c
 '
 
+test_expect_success 'stdin -z create ref fails when ref exists' '
+       git update-ref $c $m &&
+       git rev-parse "$c" >expect &&
+       printf $F "create $c" "$m~1" >stdin &&
+       test_must_fail git update-ref -z --stdin <stdin 2>err &&
+       grep "fatal: Cannot lock the ref '"'"'$c'"'"'" err &&
+       git rev-parse "$c" >actual &&
+       test_cmp expect actual
+'
+
 test_expect_success 'stdin -z create ref fails with bad new value' '
+       git update-ref -d "$c" &&
        printf $F "create $c" "does-not-exist" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
        grep "fatal: invalid new value for ref $c: does-not-exist" err &&