def test_module(client):
    """
    Returning 'ok' indicates that the integration works like it suppose to. Connection to the service is successful.

    Args:
        client: HelloWorld client

    Returns:
        'ok' if test passed, anything else will fail the test
    """

    result = client.say_hello('DBot')
    if 'Hello DBot' == result:
        return 'ok'
    else:
        return 'Test failed because ......'