title: Jest did not exit one second after the test run has completed
body: <p>I got the following error by running the test case:</p>
  
  <blockquote>
    <p>Jest did not exit one second after the test run has completed.
    This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with <code>--detectOpenHandles</code> to troubleshoot this issue.</p>
  </blockquote>
  
  <p>I ran the test case with <code>--ForceExit</code> as well as <code>--detectOpenHandles</code>. But I didn't resolve this error.</p>