Describe the problem that you experienced

With zoneless becoming the default, fakeAsync can't be used anymore.

Besides, Angular will now support Vitest and Jasmine, which both provide different ways of faking timers/clock. And those fake timers/clock have an impact on whether await fixture.whenStable() will return or not.

To make it even more subtle and complex, Vitest browser mode has expect.element() which retries assertions every N milliseconds, and that of course is also interfering with fake timers.

It would be nice if the documentation revamped the section about fake async tests to illustrate common sccenarios, with those various frameworks:

• a component delegating to a mock service returning a promise
• a component using setTimeout, setInterval and RxJS delay() or debounceTime()

Enter the URL of the topic with the problem

https://angular.dev/guide/testing/components-scenarios#async-test-with-fakeasync

Describe what you were looking for in the documentation

No response

Describe the actions that led you to experience the problem

No response

Describe what you want to experience that would fix the problem

No response

Add a screenshot if that helps illustrate the problem

No response

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