vector<???> order { CV_8U, CV_8S, CV_16U, CV_16S, CV_16F, CV_32S, CV_32F, CV_64F };

    for (int i = 0; i < order.size(); ++i)
    {
        for (int j = 0; j < order.size(); ++j)
        {
            ASSERT_EQ(order[i] <  order[j], i <  j);
            ASSERT_EQ(order[i] <= order[j], i <= j);
            ASSERT_EQ(order[i] >  order[j], i >  j);
            ASSERT_EQ(order[i] >= order[j], i >= j);
        }
    }