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RTCPeerConnection-description-attributes-timing.https.html
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<!doctype html>
<meta charset=utf-8>
<title></title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
'use strict';
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const offer = await pc.createOffer();
assert_equals(pc.pendingLocalDescription, null,
'pendingLocalDescription is null before setLocalDescription');
const promise = pc.setLocalDescription(offer);
assert_equals(pc.pendingLocalDescription, null,
'pendingLocalDescription is still null while promise pending');
await promise;
assert_not_equals(pc.pendingLocalDescription, null,
'pendingLocalDescription is not null after await');
}, "pendingLocalDescription is surfaced at the right time");
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const offer = await pc.createOffer();
assert_equals(pc.pendingRemoteDescription, null,
'pendingRemoteDescription is null before setRemoteDescription');
const promise = pc.setRemoteDescription(offer);
assert_equals(pc.pendingRemoteDescription, null,
'pendingRemoteDescription is still null while promise pending');
await promise;
assert_not_equals(pc.pendingRemoteDescription, null,
'pendingRemoteDescription is not null after await');
}, "pendingRemoteDescription is surfaced at the right time");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const offer = await pc1.createOffer();
await pc1.setLocalDescription(offer);
await pc2.setRemoteDescription(offer);
const answer = await pc2.createAnswer();
assert_equals(pc2.currentLocalDescription, null,
'currentLocalDescription is null before setLocalDescription');
const promise = pc2.setLocalDescription(answer);
assert_equals(pc2.currentLocalDescription, null,
'currentLocalDescription is still null while promise pending');
await promise;
assert_not_equals(pc2.currentLocalDescription, null,
'currentLocalDescription is not null after await');
}, "currentLocalDescription is surfaced at the right time");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc2.close());
const offer = await pc1.createOffer();
await pc1.setLocalDescription(offer);
await pc2.setRemoteDescription(offer);
const answer = await pc2.createAnswer();
assert_equals(pc1.currentRemoteDescription, null,
'currentRemoteDescription is null before setRemoteDescription');
const promise = pc1.setRemoteDescription(answer);
assert_equals(pc1.currentRemoteDescription, null,
'currentRemoteDescription is still null while promise pending');
await promise;
assert_not_equals(pc1.currentRemoteDescription, null,
'currentRemoteDescription is not null after await');
}, "currentRemoteDescription is surfaced at the right time");
</script>