def METHOD_NAME(self):
    """Test that global service is used in Session"""
    _ = FakeRuntimeService(channel="ibm_quantum", token="abc")
    session = Session(backend="ibmq_qasm_simulator")
    self.assertTrue(isinstance(session._service, FakeRuntimeService))
    self.assertEqual(session._service._account.token, "abc")
    _ = FakeRuntimeService(channel="ibm_quantum", token="xyz")
    session = Session(backend="ibmq_qasm_simulator")
    self.assertEqual(session._service._account.token, "xyz")
    with Session(
        service=FakeRuntimeService(channel="ibm_quantum", token="uvw"), backend="ibm_gotham"
    ) as session:
        self.assertEqual(session._service._account.token, "uvw")