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flush

Simulates the asynchronous passage of time for the timers in the fakeAsync zone by draining the macrotask queue until it is empty. The returned value is the milliseconds of time that would have been elapsed.

flush(maxTurns?: number): number
      
      flush(maxTurns?: number): number
    
参数
maxTurns number

可选. 默认值是 undefined.

返回值

number: The simulated time elapsed, in millis.