git rev-parse --verify refs/heads/master
'
+test_expect_success 'merge @{-1}' '
+ git checkout A &&
+ test_commit B &&
+ git checkout A &&
+ test_commit C &&
+ git branch -f master B &&
+ git branch -f other &&
+ git checkout other &&
+ git checkout master &&
+ git merge @{-1} &&
+ git cat-file commit HEAD | grep "Merge branch '\''other'\''"
+'
+
+test_expect_success 'merge @{-1} when there is not enough switches yet' '
+ git reflog expire --expire=now &&
+ git checkout -f master &&
+ git reset --hard B &&
+ git branch -f other C &&
+ git checkout other &&
+ git checkout master &&
+ test_must_fail git merge @{-12}
+'
+
test_done