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angular 2.0_typescript

angular

tick

Experimental Function

Class Export

export tick(millis?: number) : void

Simulates the asynchronous passage of time for the timers in the fakeAsync zone.

The microtasks queue is drained at the very start of this function and after any timer callback has been executed.

Example

describe('this test', () => {
  it('looks async but is synchronous', <any>fakeAsync((): void => {
       var flag = false;
       setTimeout(() => { flag = true; }, 100);
       expect(flag).toBe(false);
       tick(50);
       expect(flag).toBe(false);
       tick(50);
       expect(flag).toBe(true);
     }));
});

exported from @angular/core/testing/index defined in @angular/core/testing/fake_async.ts

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Licensed under the Creative Commons Attribution License 4.0.
https://angular.io/docs/ts/latest/api/core/testing/index/tick-function.html