def CreateUser(self, username):
    user = aff4.FACTORY.Create("aff4:/users/%s" % username, "GRRUser",
                               token=self.token.SetUID())
    user.Flush()
    return user
A context manager that asserts the enclosed code block fails
dataset/ETHPy150Open google/grr/grr/lib/test_lib.py/GRRBaseTest.CreateUser--crossover with--dataset/ETHPy150Open numba/numba/numba/tests/support.py/TestCase.assertTypingError