• reference solution should be defined in a scope local to the testing function
• test.it should decorate a function

https://docs.codewars.com/languages/python/authoring/#reference-solution
https://github.com/Codewars/codewars.com/wiki/Codewars-Python-Test-Framework-V2#test-suite-best-practices

Hackery aside, random testing is not strong enough, cheers.

note that what you call actual in your tests is actually the expected value. Please change this because in any aother kata, actual stands for the result of the user.

• test should be used instead of Test (Read this)
• No random tests
• Close duplicate

Consider reading this as well to author better katas in future :)