131 lines
5 KiB
HTML
131 lines
5 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>RTCPeerConnection.prototype.createOffer</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="RTCPeerConnection-helper.js"></script>
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<script>
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'use strict';
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// Test is based on the following editor draft:
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// https://w3c.github.io/webrtc-pc/archives/20170515/webrtc.html
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// The following helper functions are called from RTCPeerConnection-helper.js:
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// countAudioLine()
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// countVideoLine()
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// assert_session_desc_similar()
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/*
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* 4.3.2. createOffer()
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*/
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/*
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* Final steps to create an offer
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* 4. Let offer be a newly created RTCSessionDescriptionInit dictionary
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* with its type member initialized to the string "offer" and its sdp member
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* initialized to sdpString.
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*/
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promise_test(async t => {
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const pc = new RTCPeerConnection()
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t.add_cleanup(() => pc.close());
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const offer = await pc.createOffer()
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assert_equals(typeof offer, 'object',
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'Expect offer to be plain object (dictionary RTCSessionDescriptionInit)');
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assert_false(offer instanceof RTCSessionDescription,
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'Expect offer to not be instance of RTCSessionDescription')
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}, 'createOffer() returns RTCSessionDescriptionInit');
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promise_test(t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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const states = [];
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pc.addEventListener('signalingstatechange', () => states.push(pc.signalingState));
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return generateVideoReceiveOnlyOffer(pc)
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.then(offer =>
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pc.setLocalDescription(offer)
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.then(() => {
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assert_equals(pc.signalingState, 'have-local-offer');
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assert_session_desc_similar(pc.localDescription, offer);
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assert_equals(pc.pendingLocalDescription, pc.localDescription);
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assert_equals(pc.currentLocalDescription, null);
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assert_array_equals(states, ['have-local-offer']);
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}));
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}, 'createOffer() and then setLocalDescription() should succeed');
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promise_test(t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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pc.close();
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return promise_rejects_dom(t, 'InvalidStateError',
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pc.createOffer());
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}, 'createOffer() after connection is closed should reject with InvalidStateError');
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/*
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* Final steps to create an offer
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* 2. If connection was modified in such a way that additional inspection of the
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* system state is necessary, then in parallel begin the steps to create an
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* offer again, given p, and abort these steps.
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*
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* This test might hit step 2 of final steps to create an offer. But the media stream
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* is likely added already by the time steps to create an offer is executed, because
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* that is enqueued as an operation.
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* Either way it verifies that the media stream is included in the offer even though
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* the stream is added after synchronous call to createOffer.
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*/
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promise_test(t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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const promise = pc.createOffer();
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pc.addTransceiver('audio');
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return promise.then(offer => {
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assert_equals(countAudioLine(offer.sdp), 1,
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'Expect m=audio line to be found in offer SDP')
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});
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}, 'When media stream is added when createOffer() is running in parallel, the result offer should contain the new media stream');
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/*
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If connection's signaling state is neither "stable" nor "have-local-offer", return a promise rejected with a newly created InvalidStateError.
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*/
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promise_test(t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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const states = [];
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pc.addEventListener('signalingstatechange', () => states.push(pc.signalingState));
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return generateVideoReceiveOnlyOffer(pc)
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.then(offer =>
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pc.setRemoteDescription(offer)
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.then(() => {
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assert_equals(pc.signalingState, 'have-remote-offer');
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return promise_rejects_dom(t, 'InvalidStateError',
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pc.createOffer());
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})
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)
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}, 'createOffer() should fail when signaling state is not stable or have-local-offer');
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/*
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* TODO
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* 4.3.2 createOffer
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* 3. If connection is configured with an identity provider, and an identity
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* assertion has not yet been generated using said identity provider, then
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* begin the identity assertion request process if it has not already begun.
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* Steps to create an offer
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* 1. If the need for an identity assertion was identified when createOffer was
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* invoked, wait for the identity assertion request process to complete.
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*
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* Non-Testable
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* 4.3.2 createOffer
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* Steps to create an offer
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* 4. Inspect the system state to determine the currently available resources as
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* necessary for generating the offer, as described in [JSEP] (section 4.1.6.).
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* 5. If this inspection failed for any reason, reject p with a newly created
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* OperationError and abort these steps.
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*/
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</script>
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