test_when_finished "rm -f .git/packed-refs.lock" &&
test_must_fail git update-ref -d $prefix/foo >out 2>err &&
git for-each-ref $prefix >actual &&
- test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: File exists" err &&
+ test_i18ngrep "Unable to create $Q.*packed-refs.lock$Q: " err &&
+ test_cmp unchanged actual
+'
+
+test_expect_success 'delete fails cleanly if packed-refs.new write fails' '
+ # Setup and expectations are similar to the test above.
+ prefix=refs/failed-packed-refs &&
+ git update-ref $prefix/foo $C &&
+ git pack-refs --all &&
+ git update-ref $prefix/foo $D &&
+ git for-each-ref $prefix >unchanged &&
+ # This should not happen in practice, but it is an easy way to get a
+ # reliable error (we open with create_tempfile(), which uses O_EXCL).
+ : >.git/packed-refs.new &&
+ test_when_finished "rm -f .git/packed-refs.new" &&
+ test_must_fail git update-ref -d $prefix/foo &&
+ git for-each-ref $prefix >actual &&
test_cmp unchanged actual
'