t3200-branch: test -M

Signed-off-by: Michael J Gruber <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Michael J Gruber

t/t3200-branch.sh

@@ -97,6 +97,15 @@ test_expect_success 'git branch -m o/o o should fail when o/p exists' '
 	test_must_fail git branch -m o/o o
 '
 
+test_expect_success 'git branch -m o/q o/p should fail when o/p exists' '
+	git branch o/q &&
+	test_must_fail git branch -m o/q o/p
+'
+
+test_expect_success 'git branch -M o/q o/p should work when o/p exists' '
+	git branch -M o/q o/p
+'
+
 test_expect_success 'git branch -m q r/q should fail when r exists' '
 	git branch q &&
 	git branch r &&