def METHOD_NAME(self):
    elb = ELBConnection(aws_access_key_id='aws_access_key_id',
                        aws_secret_access_key='aws_secret_access_key')
    mock_response = mock.Mock()
    mock_response.read.return_value = DESCRIBE_RESPONSE
    mock_response.status = 200
    elb.make_request = mock.Mock(return_value=mock_response)
    load_balancers1 = elb.get_all_load_balancers()
    self.assertEqual('1234', load_balancers1.marker)
    load_balancers2 = elb.get_all_load_balancers(marker=load_balancers1.marker)
    self.assertEqual(len(load_balancers2), 1)