function
Wraps a function to be executed in the fakeAsync zone:
flushMicrotasks()
,tick()
simulates the asynchronous passage of time.fakeAsync(fn: Function): (...args: any[]) => any
fn | Function |
(...args: any[]) => any
: The function wrapped to be executed in the fakeAsync zone
If there are any pending timers at the end of the function, an exception will be thrown.
Can be used to wrap inject() calls.
Further information available in the Usage Notes...
describe('this test', () => { it('looks async but is synchronous', <any>fakeAsync((): void => { let flag = false; setTimeout(() => { flag = true; }, 100); expect(flag).toBe(false); tick(50); expect(flag).toBe(false); tick(50); expect(flag).toBe(true); })); });
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Licensed under the Creative Commons Attribution License 4.0.
https://v11.angular.io/api/core/testing/fakeAsync