t5540/5541: smart-http does not support "--force-with-lease"

The push() method in remote-curl.c is not told and does not pass the
necessary information to underlying send-pack, so this extension
does not yet work.  Leave a note in the test suite.

Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/lib-httpd.sh

@@ -167,6 +167,22 @@ test_http_push_nonff() {
 	test_expect_success 'non-fast-forward push shows help message' '
 		test_i18ngrep "Updates were rejected because" output
 	'
+
+	test_expect_failure 'force with lease aka cas' '
+		HEAD=$(	cd "$REMOTE_REPO" && git rev-parse --verify HEAD ) &&
+		test_when_finished '\''
+			(cd "$REMOTE_REPO" && git update-ref HEAD "$HEAD")
+		'\'' &&
+		(
+			cd "$LOCAL_REPO" &&
+			git push -v --force-with-lease=$BRANCH:$HEAD origin
+		) &&
+		git rev-parse --verify "$BRANCH" >expect &&
+		(
+			cd "$REMOTE_REPO" && git rev-parse --verify HEAD
+		) >actual &&
+		test_cmp expect actual
+	'
 }
 
 setup_askpass_helper() {