https://codesandbox.io/s/upbeat-frost-3tt25

1. Press Suspend, see "Loading..."
2. Wait five seconds, you'll see "Happy birthday" at some point 
3. You won't see it again no matter how long you wait

Expected: you'll see it every five seconds.
</Suspense>
      );
    }
    
    ReactNoop.render(<App page="A" />);
    expect(Scheduler).toFlushAndYield(['Hi!', 'A']);
    expect(ReactNoop.getChildren()).toEqual([span('Hi!'), span('A')]);
    
    React.unstable_withSuspenseConfig(
      () => ReactNoop.render(<App page="B" />),
      {timeoutMs: 2000},
    );
    expect(Scheduler).toFlushAndYield(['Hi!', 'Suspend! [B]', 'Loading B...']);
    
    expect(ReactNoop.getChildren()).toEqual([span('Hi!'), span('A')]);
    Scheduler.unstable_advanceTime(1800);
    await advanceTimers(1800);
    expect(Scheduler).toFlushAndYield([]);
    
    expect(ReactNoop.getChildren()).toEqual([span('Hi!'), span('A')]);
    Scheduler.unstable_advanceTime(1500);
    await advanceTimers(1500);
    expect(Scheduler).toHaveYielded(['Promise resolved [B]']);
    expect(ReactNoop.getChildren()).toEqual([
      span('Hi!'),
      span('Loading B...'),
    ]);
  });
  it('supports delaying a busy spinner from disappearing', async () => {
    function useLoadingIndicator(config) {