chromium/third_party/blink/web_tests/external/wpt/webrtc/RTCPeerConnection-helper-test.html

<!doctype html>
<meta charset=utf-8>
<title>RTCPeerConnection-helper tests</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCPeerConnection-helper.js"></script>
<script>
'use strict';

promise_test(async t => {
  const pc1 = new RTCPeerConnection();
  const pc2 = new RTCPeerConnection();
  t.add_cleanup(() => pc1.close());
  t.add_cleanup(() => pc2.close());
  const transceiver = pc1.addTransceiver('video');

  exchangeIceCandidates(pc1, pc2);
  await exchangeOfferAnswer(pc1, pc2);
  await waitForState(transceiver.sender.transport, 'connected');
}, 'Setting up a connection using helpers and defaults should work');
</script>