mktag tests: use "test_commit" helper

Replace ad-hoc setup of a single commit in the "mktag" tests with our
standard helper pattern. The old setup dated back to 446c6faec69 (New
tests and en-passant modifications to mktag., 2006-07-29) before the
helper existed.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3800-mktag.sh b/t/t3800-mktag.sh
index 0e411e3c45fa46d604f7efad0f45e5799d36013e..dd21a1247a23b86c2f433604ab31afcd16342a03 100755 (executable)
--- a/t/t3800-mktag.sh
+++ b/t/t3800-mktag.sh
@@ -23,9 +23,7 @@ check_verify_failure () {
 # first create a commit, so we have a valid object/type
 # for the tag.
 test_expect_success 'setup' '
-       echo Hello >A &&
-       git update-index --add A &&
-       git commit -m "Initial commit" &&
+       test_commit A &&
        head=$(git rev-parse --verify HEAD)
 '