Jest test setup

[AndrianStoikov]

Hello everyone,

I'm quite new to testing with jest. I'm having trouble with creating a simple test for the idle timer. The problem happens when I add
the timers: workerTimers, property. My test fails with TypeError: l.addEventListener is not a function. Executing exactly the same test but removing the timers results in a success. Can someone please guide me how I should mock the Worker object in order to execute correctly the tests?

Best,
Andrian

[SupremeTechnopriest]

Hey @AndrianStoikov,

Have you checked out https://idletimer.dev/docs/getting-started/testing?

Basically you just need to call createMocks() in your test setup. That's going to essentially override the web worker timers with native timers for your tests.

[SupremeTechnopriest]

Sounds like this might be a bug. I will add a test and see if I can figure it out.

[AndrianStoikov]

Thanks for your time. Hopefully you can figure it out 😄

[SupremeTechnopriest]

Give 5.4.1 a try. Shouldn't need to change anything in your code.

[AndrianStoikov]

@SupremeTechnopriest

That was fast and it works. Thank you! 🚀

[SupremeTechnopriest]

Awesome! Marking this as answered.