|  | <!doctype html> | 
|  | <meta charset=utf-8> | 
|  | <meta name="timeout" content="long"> | 
|  | <title>RTCDataChannel.prototype.close</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 => { | 
|  | let pc1 = new RTCPeerConnection(); | 
|  | t.add_cleanup(() => pc1.close()); | 
|  | let [channel1, channel2] = await createDataChannelPair(pc1); | 
|  | let closeHandler = new Promise(resolve => { | 
|  | channel2.onclose = event => { | 
|  | resolve(); | 
|  | }; | 
|  | }); | 
|  | let closingSeen = false; | 
|  | channel1.onclosing = t.unreached_func(); | 
|  | channel2.onclosing = event => { | 
|  | assert_equals(channel2.readyState, 'closing'); | 
|  | closingSeen = true; | 
|  | } | 
|  | channel2.addEventListener('error', t.unreached_func()); | 
|  | channel1.close(); | 
|  | await closeHandler; | 
|  | assert_equals(channel2.readyState, 'closed'); | 
|  | assert_true(closingSeen, 'Closing event was seen'); | 
|  | }, 'Close datachannel causes onclosing and onclose to be called'); | 
|  |  | 
|  | promise_test(async t => { | 
|  | // This is the same test as above, but using addEventListener | 
|  | // rather than the "onclose" attribute. | 
|  | let pc1 = new RTCPeerConnection(); | 
|  | t.add_cleanup(() => pc1.close()); | 
|  | let [channel1, channel2] = await createDataChannelPair(pc1); | 
|  | let closeHandler = new Promise(resolve => { | 
|  | channel2.addEventListener('close', event => { | 
|  | resolve(); | 
|  | }); | 
|  | }); | 
|  | let closingSeen = false; | 
|  | channel1.addEventListener('closing', t.unreached_func()); | 
|  | channel2.addEventListener('closing', event => { | 
|  | assert_equals(channel2.readyState, 'closing'); | 
|  | closingSeen = true; | 
|  | }); | 
|  | channel2.addEventListener('error', t.unreached_func()); | 
|  | channel1.close(); | 
|  | await closeHandler; | 
|  | assert_equals(channel2.readyState, 'closed'); | 
|  | assert_true(closingSeen, 'Closing event was seen'); | 
|  | }, 'Close datachannel causes closing and close event to be called'); | 
|  |  | 
|  | promise_test(async t => { | 
|  | let pc1 = new RTCPeerConnection(); | 
|  | t.add_cleanup(() => pc1.close()); | 
|  | let [channel1, channel2] = await createDataChannelPair(pc1); | 
|  | let events = []; | 
|  | let error = null; | 
|  | let closeHandler = new Promise(resolve => { | 
|  | channel2.addEventListener('close', event => { | 
|  | events.push('close'); | 
|  | resolve(); | 
|  | }); | 
|  | }); | 
|  | let errorHandler = new Promise((resolve, reject) => { | 
|  | channel2.addEventListener('error', event => { | 
|  | events.push('error'); | 
|  | try { | 
|  | assert_true(event instanceof RTCErrorEvent); | 
|  | error = event.error; | 
|  | } catch (e) { | 
|  | // Prevent test from hanging when an assert in the error handler fails. | 
|  | reject('Error event wrong: ' + e); | 
|  | } | 
|  | resolve(); | 
|  | }); | 
|  | }); | 
|  | pc1.close(); | 
|  | await errorHandler; | 
|  | await closeHandler; | 
|  | // Error should fire before close. | 
|  | assert_array_equals(['error', 'close'], events); | 
|  | assert_true(error instanceof RTCError); | 
|  | assert_equals(error.name, 'OperationError'); | 
|  | }, 'Close peerconnection causes close event and error to be called'); | 
|  |  | 
|  | </script> |