export clearPendingTimers() : void
exported from angular2/testing
defined in angular2/src/testing/fake_async.ts (line 68)
Clear the queue of pending timers and microtasks.
Useful for cleaning up after an asynchronous test passes.
Example
describe('this test', () => {
  it('aborts a timer', <any>fakeAsync((): void => {
       // This timer is scheduled but doesn't need to complete for the
       // test to pass (maybe it's a timeout for some operation).
       // Leaving it will cause the test to fail...
       setTimeout(() => {}, 100);
       // Unless we clean it up first.
       clearPendingTimers();
     }));
});