chromium/third_party/blink/web_tests/fast/peerconnection/RTCPeerConnection-close.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Verify that RTCPeerConnection.close() does not throw exceptions.</title>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
  test(() => {
    var pc = new RTCPeerConnection();
    pc.close();
    pc.close();
  });
</script>