def test_check_login_invalid_password(self):
self.assertFalse(posix.check_login('alice', 'nogood'))
def test_check_login_invalid_user(self):
self.assertFalse(posix.check_login('notaperson', 'anypass'))
def test_check_login_success(self):
for username, password in self.VALID_LOGIN_PAIRS:
self.assertTrue(posix.check_login(username, password))
