Graphical representation of input data sets for testing. What is the best way to do this?

Question

Software testing

I am testing the financial module. You can set expiration dates for prices, services, coupons. It is necessary to check the correctness of the program for various combinations of date ranges. Since there are a lot of variations, I want to present the input data for automated tests in a graphical form.
So far, I have only come up with a table in excel, which shows the expiration dates for a month, changing the day of the month, we should get different output results.

But it turned out not very accessible and understandable for the user. Now I want to switch from excel to html, there should be more possibilities. But I don't have any idea how to do it better yet, can you give me some advice?

Answer 1

It is better to take the necessary combinations, write pairwise tests on them, and not try to make pretty pictures out of it. :)