test_must_fail git branch -m q r/q
'
+test_expect_success 'git branch -M foo bar should fail when bar is checked out' '
+ git branch bar &&
+ git checkout -b foo &&
+ test_must_fail git branch -M bar foo
+'
+
+test_expect_success 'git branch -M baz bam should succeed when baz is checked out' '
+ git checkout -b baz &&
+ git branch bam &&
+ git branch -M baz bam
+'
+
+ test_expect_success 'git branch -v -d t should work' '
+ git branch t &&
+ test_path_is_file .git/refs/heads/t &&
+ git branch -v -d t &&
+ test_path_is_missing .git/refs/heads/t
+ '
+
+ test_expect_success 'git branch -v -m t s should work' '
+ git branch t &&
+ test_path_is_file .git/refs/heads/t &&
+ git branch -v -m t s &&
+ test_path_is_missing .git/refs/heads/t &&
+ test_path_is_file .git/refs/heads/s &&
+ git branch -d s
+ '
+
+ test_expect_success 'git branch -m -d t s should fail' '
+ git branch t &&
+ test_path_is_file .git/refs/heads/t &&
+ test_must_fail git branch -m -d t s &&
+ git branch -d t &&
+ test_path_is_missing .git/refs/heads/t
+ '
+
+ test_expect_success 'git branch --list -d t should fail' '
+ git branch t &&
+ test_path_is_file .git/refs/heads/t &&
+ test_must_fail git branch --list -d t &&
+ git branch -d t &&
+ test_path_is_missing .git/refs/heads/t
+ '
+
mv .git/config .git/config-saved
test_expect_success 'git branch -m q q2 without config should succeed' '