Glinat

Here is an example of a test suite using the optional `pp_diff` argument of `assert_equal` : https://www.codewars.com/kumite/62ff92cb211df8001c4b80c4 This argument is used to show the differences between the expected and actual...

When working with lists, `~pp_diff` and `~printer` can be automatically generated with the `OUnitDiff` module, as demonstrated in [its documentation](https://gildor478.github.io/ounit/ounit2/OUnitDiff/index.html).