def METHOD_NAME(requests_mock):
    """
    Test simulates low load 10/40 points of rate limit.
    """
    test_response_header = {"X-Shopify-Shop-Api-Call-Limit": "10/40"}
    requests_mock.get("https://test.myshopify.com/", headers=test_response_header)
    test_response = requests.get("https://test.myshopify.com/")
    actual_sleep_time = limiter.get_rest_api_wait_time(
        test_response, threshold=TEST_THRESHOLD, rate_limit_header=TEST_RATE_LIMIT_HEADER
    )
    assert limiter.on_low_load == actual_sleep_time