def test_noKeysForUnauthorizedUser(self):
        keydb = checkers.InMemorySSHKeyDB({b'alice': [b'keys']})
        self.assertEqual([], list(keydb.getAuthorizedKeys(b'bob')))
If the user is not in the mapping provided to
dataset/ETHPy150Open twisted/twisted/twisted/conch/test/test_checkers.py/InMemorySSHKeyDBTests.test_noKeysForUnauthorizedUser