How to test a function which has a setTimeout with jasmine?

Question

I need to write a test for a function that has a setTimeout() call inside, but i can\'t find how i should do.

This is the function

// Di         


        

Answer 1

For anyone googling this, a better answer can be found timer testing

import { fakeAsync, tick, discardPeriodicTasks } from '@angular/core/testing';

it('polls statusStore.refreshStatus on an interval', fakeAsync(() => {
  spyOn(mockStatusStore, 'refreshStatus').and.callThrough();
  component.ngOnInit();
  expect(mockStatusStore.refreshStatus).not.toHaveBeenCalled();
  tick(3001);
  expect(mockStatusStore.refreshStatus).toHaveBeenCalled();
  tick(3001);
  expect(mockStatusStore.refreshStatus).toHaveBeenCalledTimes(2);
  discardPeriodicTasks();
 }));