+test_expect_success 'invalid @{n} reference' '
+ test_must_fail git rev-parse master@{99999} >output 2>error &&
+ test -z "$(cat output)" &&
+ grep "fatal: Log for [^ ]* only has [0-9][0-9]* entries." error &&
+ test_must_fail git rev-parse --verify master@{99999} >output 2>error &&
+ test -z "$(cat output)" &&
+ grep "fatal: Log for [^ ]* only has [0-9][0-9]* entries." error
+'
+