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 -f o/q o/p should work when o/p exists' '
+ git branch o/q &&
+ git branch -m -f o/q o/p
+'
+
test_expect_success 'git branch -m q r/q should fail when r exists' '
git branch q &&
git branch r &&
test_i18ncmp expect actual
'
+test_expect_success 'deleting a self-referential symref' '
+ git symbolic-ref refs/heads/self-reference refs/heads/self-reference &&
+ test_path_is_file .git/refs/heads/self-reference &&
+ echo "Deleted branch self-reference (was refs/heads/self-reference)." >expect &&
+ git branch -d self-reference >actual &&
+ test_path_is_missing .git/refs/heads/self-reference &&
+ test_i18ncmp expect actual
+'
+
test_expect_success 'renaming a symref is not allowed' '
git symbolic-ref refs/heads/master2 refs/heads/master &&
test_must_fail git branch -m master2 master3 &&