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.
expect(ReactNoop).toMatchRenderedOutput(
      <>
        <span>A</span>
        <span>Loading B</span>
      </>,
    );
    
    
    ReactNoop.act(() => ReactNoop.render(<Foo updateList={true} />));
    expect(Scheduler).toHaveYielded(['A', 'Suspend! [B]', 'Loading B']);
    expect(ReactNoop).toMatchRenderedOutput(
      <>
        <span>A</span>
        <span>Loading B</span>
      </>,
    );
    await AsyncB.resolve();
    expect(Scheduler).toFlushAndYield(['B']);
    expect(ReactNoop).toMatchRenderedOutput(
      <>
        <span>A</span>
        <span>B</span>
      </>,
    );
    
    
    expect(previousInst).toBe(setAsyncB);
  });
});