I have filed an issue on the discussion page of the kata at this link - https://www.codewars.com/kata/65dcc738ac0d2af17e6c6389/discuss/sql, but I'm yet to get response.

My solution for the current kata is failing 2 test cases. The error message shown is 'rows did not match expected @@,product_name,valid_from,...'.

For the first failing test case:

Actual output:

product_name valid_from valid_to available_amount available_unit
Product A 2000-01-01 2025-01-01 0

Expected output:

product_name valid_from valid_to available_amount available_unit
Product A 2000-01-01 2025-01-01 0

A visual inspection of the actual and expected output does not indicate any differences. The diff tab shows no differences either. The second failing testcases is the Test Case Complex.

Why is the diff tab empty but the testcase is still failing? How can I resolve this problem? Kindly assist, thank you.