[PATCH v5 4/9] fetch tests: add a test for clobbering tag behavior

["Ævar Arnfjörð Bjarmason" <avarab@gmail.com>]

The test suite only incidentally (and unintentionally) tested for the
current behavior of eager tag clobbering on "fetch". This is a
followup to 380efb65df ("push tests: assert re-pushing annotated
tags", 2018-07-31) which tests for it explicitly.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 t/t5516-fetch-push.sh | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/t/t5516-fetch-push.sh b/t/t5516-fetch-push.sh
index 8b67f08265..7f3d4c4965 100755
--- a/t/t5516-fetch-push.sh
+++ b/t/t5516-fetch-push.sh
@@ -1011,6 +1011,30 @@ test_force_push_tag () {
 test_force_push_tag "lightweight tag" "-f"
 test_force_push_tag "annotated tag" "-f -a -m'tag message'"
 
+test_force_fetch_tag () {
+	tag_type_description=$1
+	tag_args=$2
+
+	test_expect_success "fetch will clobber an existing $tag_type_description" "
+		mk_test testrepo heads/master &&
+		mk_child testrepo child1 &&
+		mk_child testrepo child2 &&
+		(
+			cd testrepo &&
+			git tag testTag &&
+			git -C ../child1 fetch origin tag testTag &&
+			>file1 &&
+			git add file1 &&
+			git commit -m 'file1' &&
+			git tag $tag_args testTag &&
+			git -C ../child1 fetch origin tag testTag
+		)
+	"
+}
+
+test_force_fetch_tag "lightweight tag" "-f"
+test_force_fetch_tag "annotated tag" "-f -a -m'tag message'"
+
 test_expect_success 'push --porcelain' '
 	mk_empty testrepo &&
 	echo >.git/foo  "To testrepo" &&
-- 
2.19.0.rc1.350.ge57e33dbd1