Create further tests for the upper / lower case validation in conjunction with riddler

Please review!

Hold up, maybe I can actually fix up ✨ Add tests to ensure case-unsensitivity works Fixed . Since a lot of work went in there.

Thanks @Grevil, looking fine so far!

Currently this only checks the expected cases to work, but for both we also need to check the anti-case. Best would be to logout the user again after success and try the same words, but in other cases.

Finally another logout might make sense, testing a different word so we can be sure only the expected cases work!

Duplicate of ✨ Add tests to ensure case-unsensitivity works Fixed .