t1417: make `reflog --updateref` tests backend agnostic

The tests for `git reflog delete --updateref` are currently marked to
only run with the reffiles backend. There is no inherent reason that
this should be the case other than the fact that the setup messes with
the on-disk reflogs directly.

Refactor the test to stop doing so and drop the REFFILES prerequisite.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t1417-reflog-updateref.sh b/t/t1417-reflog-updateref.sh
index 14f13b57c6d2017d199a5d91d6908665c7f2671d..0eb5e674bc1f0dbc688523dd3f94a5e5bb32b6d7 100755 (executable)
--- a/t/t1417-reflog-updateref.sh
+++ b/t/t1417-reflog-updateref.sh
@@ -14,9 +14,13 @@ test_expect_success 'setup' '
                test_commit B &&
                test_commit C &&
 
-               cp .git/logs/HEAD HEAD.old &&
+               git reflog HEAD >expect &&
                git reset --hard HEAD~ &&
-               cp HEAD.old .git/logs/HEAD
+               # Make sure that the reflog does not point to the same commit
+               # as HEAD.
+               git reflog delete HEAD@{0} &&
+               git reflog HEAD >actual &&
+               test_cmp expect actual
        )
 '
 
@@ -25,7 +29,7 @@ test_reflog_updateref () {
        shift
        args="$@"
 
-       test_expect_success REFFILES "get '$exp' with '$args'"  '
+       test_expect_success "get '$exp' with '$args'"  '
                test_when_finished "rm -rf copy" &&
                cp -R repo copy &&