RTCPeerConnection-explicit-rollback-iceGatheringState.html

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This WPT test may be referenced by the following Test IDs:
- /webrtc/RTCPeerConnection-explicit-rollback-iceGatheringState.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>RTCPeerConnection.prototype.iceGatheringState</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();

  t.add_cleanup(() => pc1.close());

  const pc2 = new RTCPeerConnection();

  t.add_cleanup(() => pc2.close());

  pc1.addTransceiver('audio', { direction: 'recvonly' });

  await initialOfferAnswerWithIceGatheringStateTransitions(pc1, pc2);

  await pc1.setLocalDescription(await pc1.createOffer({iceRestart: true}));

  await iceGatheringStateTransitions(pc1, 'gathering', 'complete');

  expectNoMoreGatheringStateChanges(t, pc1);

  await pc1.setLocalDescription({type: 'rollback'});

  await new Promise(r => t.step_timeout(r, 1000));

}, 'rolling back an ICE restart when gathering is complete should not result in iceGatheringState changes');

promise_test(async t => {

  const pc1 = new RTCPeerConnection();

  t.add_cleanup(() => pc1.close());

  const pc2 = new RTCPeerConnection();

  t.add_cleanup(() => pc2.close());

  pc1.createDataChannel('test');

  await initialOfferAnswerWithIceGatheringStateTransitions(pc1, pc2);

  await pc1.setLocalDescription(await pc1.createOffer({iceRestart: true}));

  await iceGatheringStateTransitions(pc1, 'gathering', 'complete');

  expectNoMoreGatheringStateChanges(t, pc1);

  await pc1.setLocalDescription({type: 'rollback'});

  await new Promise(r => t.step_timeout(r, 1000));

}, 'rolling back an ICE restart when gathering is complete should not result in iceGatheringState changes (DataChannel case)');

promise_test(async t => {

  const pc = new RTCPeerConnection();

  t.add_cleanup(() => pc.close());

  pc.addTransceiver('audio', { direction: 'recvonly' });

  await pc.setLocalDescription();

  await iceGatheringStateTransitions(pc, 'gathering', 'complete');

  const backToNew = iceGatheringStateTransitions(pc, 'new');

  await pc.setLocalDescription({type: 'rollback'});

  await backToNew;

}, 'setLocalDescription(rollback) of original offer should cause iceGatheringState to reach "new" when starting in "complete"');

promise_test(async t => {

  const pc = new RTCPeerConnection();

  t.add_cleanup(() => pc.close());

  pc.createDataChannel('test');

  await pc.setLocalDescription();

  await iceGatheringStateTransitions(pc, 'gathering', 'complete');

  const backToNew = iceGatheringStateTransitions(pc, 'new');

  await pc.setLocalDescription({type: 'rollback'});

  await backToNew;

}, 'setLocalDescription(rollback) of original offer should cause iceGatheringState to reach "new" when starting in "complete" (DataChannel case)');

promise_test(async t => {

  const pc = new RTCPeerConnection();

  t.add_cleanup(() => pc.close());

  pc.addTransceiver('audio', { direction: 'recvonly' });

  await pc.setLocalDescription();

  await iceGatheringStateTransitions(pc, 'gathering');

  const backToNew = Promise.allSettled([

    iceGatheringStateTransitions(pc, 'new'),

    iceGatheringStateTransitions(pc, 'complete', 'new')]);

  await pc.setLocalDescription({type: 'rollback'});

  // We might go directly to 'new', or we might go to 'complete' first,

  // depending on timing. Allow either.

  const results = await backToNew;

  assert_true(results.some(result => result.status == 'fulfilled'),

    'ICE gathering state should go back to "new", possibly through "complete"');

}, 'setLocalDescription(rollback) of original offer should cause iceGatheringState to reach "new" when starting in "gathering"');

promise_test(async t => {

  const pc = new RTCPeerConnection();

  t.add_cleanup(() => pc.close());

  pc.createDataChannel('test');

  await pc.setLocalDescription();

  await iceGatheringStateTransitions(pc, 'gathering');

  const backToNew = Promise.allSettled([

    iceGatheringStateTransitions(pc, 'new'),

    iceGatheringStateTransitions(pc, 'complete', 'new')]);

  await pc.setLocalDescription({type: 'rollback'});

  // We might go directly to 'new', or we might go to 'complete' first,

  // depending on timing. Allow either.

  const results = await backToNew;

  assert_true(results.some(result => result.status == 'fulfilled'),

    'ICE gathering state should go back to "new", possibly through "complete"');

}, 'setLocalDescription(rollback) of original offer should cause iceGatheringState to reach "new" when starting in "gathering" (DataChannel case)');

</script>