Description should be language-agnostic

Fixed formatting a little bit because of crappy initial code and it passed all of the tests... What?
Why is it even a task? This kata should be retired for good.

No random tests. (atleast in python).

Descrption should be language-agnostic

No random tests in all languages

• Python new test framework should be used

• string parameter should be replaced with something else since it shadows a builtin library

The description doesn't say that there may be recursive callbacks.
It's better if you note it there.

Becase I wrote a piece of code that calls the fourth argument in the beginning, therefore causing "Maximum call stack size exceeded" error.

JS: How about only have a single assertion in every iteration of the random test? Instead of swapping around the arrays & sets, you could increase the amount of tests. Right now it's kinda hard to maintain.

Python translation

It is a great kata to learn about calendars and dates, but it needs improvements:

• using global TODAY variable is not how calendars are to be tested
• tests need to be updated to Mocha+Chai
• it would be useful to have some test cases which would check for handling of leap years etc. to weed out solutions using home-grown date handling.
• specs need to clarify what's the next birthday date for people born on leap days

JS: Node v12 should be used enabled along with its appropiate assertion tools (Mocha + Chai).

JS: Node v12 should be used along with the appropriate assertion tools (Mocha + Chai)

The description should explain how strings and array of strings are compared.

• Node 12 should be enabled (Refer this and this for more info)

• Node 12 should be enabled (Refer this and this for more info)