TIL, 2021-09-29 - Some Grokking Observables
expect.assertionsto test that something has been asserted.- The way to do a spec: re making sure async stuff finished:
component.ngOnInit();
localeFacade.selectedLocale$
.pipe(count())
.subscribe((numberOfLocaleChanges) => {
expect(loadLoyaltyProgramsSpy).toHaveBeenCalledTimes(
numberOfLocaleChanges,
);
done();
});
- You can do something like this:
await expect(localeFacade.selectedLocale$.pipe(count()).toPromise()).resolves.toEqual(2);