How to check if a class property changed ?

[ThomasKleinhans]

Hi !

I'm new to jest and I don't get how to check if a class property has changed when I call a method from this class.

Class :

How can I test the removePlayer method ? I would like to check if the player has correctly been removed and if the playersCount is 1 less

Thank you very much !

[ahnpnl]

You can ask in Jest community https://www.reactiflux.com/ which will get help quicker and easier :)

[ThomasKleinhans]

I thought that it was the best place to ask because it specific to typescript

[ahnpnl]

you can also ask about TypeScript questions there. ts-jest redirects all questions about testing with Jest and TypeScript/JavaScript to Jest community. If you have problems with configuration, ts-jest can help with that :)

Btw, class is not TypeScript specific, it's a feature of JavaScript called "ES6 class" https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes

[ThomasKleinhans]

Thank you :)