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chromium / external / w3c / web-platform-tests / 044cb1b9a719fd2ff423e0bcd2e62dd6e547d52d / . / webrtc / RTCPeerConnection-setLocalDescription-rollback.html
blob: 951a8f2ff0acd8eebc795e35016e876426dcaaa6 [file] [log] [blame]
Soares Chen5dbbd5f2017-07-10 09:56:09[diff] [blame]1<!doctype html>
2<meta charset=utf-8>
3<title>RTCPeerConnection.prototype.setLocalDescription rollback</title>
4<script src="/resources/testharness.js"></script>
5<script src="/resources/testharnessreport.js"></script>
6<script src="RTCPeerConnection-helper.js"></script>
7<script>
8 'use strict';
9
10 // Test is based on the following editor draft:
11 // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
12
13 // The following helper functions are called from RTCPeerConnection-helper.js:
14 // assert_session_desc_equals
Soares Chen5dbbd5f2017-07-10 09:56:09[diff] [blame]15
16 /*
17 4.3.2. Interface Definition
18 [Constructor(optional RTCConfiguration configuration)]
19 interface RTCPeerConnection : EventTarget {
20 Promise<void> setLocalDescription(
21 RTCSessionDescriptionInit description);
22
23 readonly attribute RTCSessionDescription? localDescription;
24 readonly attribute RTCSessionDescription? currentLocalDescription;
25 readonly attribute RTCSessionDescription? pendingLocalDescription;
26
27 Promise<void> setRemoteDescription(
28 RTCSessionDescriptionInit description);
29
30 readonly attribute RTCSessionDescription? remoteDescription;
31 readonly attribute RTCSessionDescription? currentRemoteDescription;
32 readonly attribute RTCSessionDescription? pendingRemoteDescription;
33 ...
34 };
35
36 4.6.2. RTCSessionDescription Class
37 dictionary RTCSessionDescriptionInit {
38 required RTCSdpType type;
39 DOMString sdp = "";
40 };
41
42 4.6.1. RTCSdpType
43 enum RTCSdpType {
44 "offer",
45 "pranswer",
46 "answer",
47 "rollback"
48 };
49 */
50
51 /*
52 4.3.1.6. Set the RTCSessionSessionDescription
53 2.2.2. If description is set as a local description, then run one of the
54 following steps:
55 - If description is of type "rollback", then this is a rollback. Set
56 connection.pendingLocalDescription to null and signaling state to stable.
57 */
58 promise_test(t=> {
59 const pc = new RTCPeerConnection();
60
Philipp Hanckeeb37a992018-05-30 15:55:02[diff] [blame]61 const states = [];
62 pc.addEventListener('signalingstatechange', () => states.push(pc.signalingState));
Soares Chen5dbbd5f2017-07-10 09:56:09[diff] [blame]63
64 return pc.createOffer()
65 .then(offer => pc.setLocalDescription(offer))
66 .then(() => {
67 assert_equals(pc.signalingState, 'have-local-offer');
68 assert_not_equals(pc.localDescription, null);
69 assert_not_equals(pc.pendingLocalDescription, null);
70 assert_equals(pc.currentLocalDescription, null);
71
72 return pc.setLocalDescription({ type: 'rollback' });
73 })
74 .then(() => {
75 assert_equals(pc.signalingState, 'stable');
76 assert_equals(pc.localDescription, null);
77 assert_equals(pc.pendingLocalDescription, null);
78 assert_equals(pc.currentLocalDescription, null);
Philipp Hanckeeb37a992018-05-30 15:55:02[diff] [blame]79
80 assert_array_equals(states, ['have-local-offer', 'stable']);
Soares Chen5dbbd5f2017-07-10 09:56:09[diff] [blame]81 });
82 }, 'setLocalDescription(rollback) from have-local-offer state should reset back to stable state');
83
Soares Chenc94ef3e2017-07-14 05:20:20[diff] [blame]84 /*
85 4.3.1.6. Set the RTCSessionSessionDescription
86 2.3. If the description's type is invalid for the current signaling state of
87 connection, then reject p with a newly created InvalidStateError and abort
88 these steps. Note that this implies that once the answerer has performed
89 setLocalDescription with his answer, this cannot be rolled back.
90
91 [jsep]
92 4.1.8.2. Rollback
93 - Rollback can only be used to cancel proposed changes;
94 there is no support for rolling back from a stable state to a
95 previous stable state
96 */
97 promise_test(t => {
98 const pc = new RTCPeerConnection();
99 return promise_rejects(t, 'InvalidStateError',
100 pc.setLocalDescription({ type: 'rollback' }));
101 }, `setLocalDescription(rollback) from stable state should reject with InvalidStateError`);
102
103 promise_test(t => {
104 const pc = new RTCPeerConnection();
Rick Waldron5445fa32017-08-30 21:53:59[diff] [blame]105 return pc.createOffer({ offerToReceiveAudio: true })
Soares Chenc94ef3e2017-07-14 05:20:20[diff] [blame]106 .then(offer =>
107 pc.setRemoteDescription(offer)
108 .then(() => pc.createAnswer()))
109 .then(answer => pc.setLocalDescription(answer))
110 .then(() => {
111 return promise_rejects(t, 'InvalidStateError',
112 pc.setLocalDescription({ type: 'rollback' }));
113 });
114 }, `setLocalDescription(rollback) after setting answer description should reject with InvalidStateError`);
115
116 promise_test(t => {
117 const pc = new RTCPeerConnection();
118 return pc.createOffer()
119 .then(offer => pc.setLocalDescription(offer))
120 .then(() => pc.setLocalDescription({
121 type: 'rollback',
122 sdp: '!<Invalid SDP Content>;'
123 }));
124 }, `setLocalDescription(rollback) should ignore invalid sdp content and succeed`);
Soares Chen5dbbd5f2017-07-10 09:56:09[diff] [blame]125</script>