t1400: test one mistake at a time

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
index a2015d09773e8d63d7763106b50307eeb28a764a..6b21e459e6f4a96b0073576633522fb19c95c273 100755 (executable)
--- a/t/t1400-update-ref.sh
+++ b/t/t1400-update-ref.sh
@@ -724,12 +724,26 @@ test_expect_success 'stdin -z fails update with no ref' '
        grep "fatal: update line missing <ref>" err
 '
 
+test_expect_success 'stdin -z fails update with too few args' '
+       printf $F "update $a" "$m" >stdin &&
+       test_must_fail git update-ref -z --stdin <stdin 2>err &&
+       grep "fatal: update $a missing <oldvalue>" err
+'
+
 test_expect_success 'stdin -z fails update with bad ref name' '
-       printf $F "update ~a" "$m" >stdin &&
+       printf $F "update ~a" "$m" "" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
        grep "fatal: invalid ref format: ~a" err
 '
 
+test_expect_success 'stdin -z emits warning with empty new value' '
+       git update-ref $a $m &&
+       printf $F "update $a" "" "" >stdin &&
+       git update-ref -z --stdin <stdin 2>err &&
+       grep "warning: update $a: missing <newvalue>, treating as zero" err &&
+       test_must_fail git rev-parse --verify -q $a
+'
+
 test_expect_success 'stdin -z fails update with no new value' '
        printf $F "update $a" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
@@ -851,7 +865,7 @@ test_expect_success 'stdin -z create ref fails with bad new value' '
        test_must_fail git rev-parse --verify -q $c
 '
 
-test_expect_failure 'stdin -z create ref fails with empty new value' '
+test_expect_success 'stdin -z create ref fails with empty new value' '
        printf $F "create $c" "" >stdin &&
        test_must_fail git update-ref -z --stdin <stdin 2>err &&
        grep "fatal: create $c missing <newvalue>" err &&