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<meta charset=utf-8>
<title>RTCDTMFSender.prototype.insertDTMF</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCPeerConnection-helper.js"></script>
<script src="RTCDTMFSender-helper.js"></script>
<script>
'use strict';
// Test is based on the following editor draft:
// https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
// The following helper functions are called from RTCPeerConnection-helper.js
// generateAnswer
// The following helper functions are called from RTCDTMFSender-helper.js
// createDtmfSender
// test_tone_change_events
// getTransceiver
/*
7. Peer-to-peer DTMF
partial interface RTCRtpSender {
readonly attribute RTCDTMFSender? dtmf;
};
interface RTCDTMFSender : EventTarget {
void insertDTMF(DOMString tones,
optional unsigned long duration = 100,
optional unsigned long interToneGap = 70);
attribute EventHandler ontonechange;
readonly attribute DOMString toneBuffer;
};
*/
/*
7.2. insertDTMF
The tones parameter is treated as a series of characters.
The characters 0 through 9, A through D, #, and * generate the associated
DTMF tones.
The characters a to d MUST be normalized to uppercase on entry and are
equivalent to A to D.
As noted in [RTCWEB-AUDIO] Section 3, support for the characters 0 through 9,
A through D, #, and * are required.
The character ',' MUST be supported, and indicates a delay of 2 seconds
before processing the next character in the tones parameter.
All other characters (and only those other characters) MUST be considered
unrecognized.
*/
promise_test(async t => {
const dtmfSender = await createDtmfSender();
dtmfSender.insertDTMF('');
dtmfSender.insertDTMF('012345689');
dtmfSender.insertDTMF('ABCD');
dtmfSender.insertDTMF('abcd');
dtmfSender.insertDTMF('#*');
dtmfSender.insertDTMF(',');
dtmfSender.insertDTMF('0123456789ABCDabcd#*,');
}, 'insertDTMF() should succeed if tones contains valid DTMF characters');
/*
7.2. insertDTMF
6. If tones contains any unrecognized characters, throw an
InvalidCharacterError.
*/
promise_test(async t => {
const dtmfSender = await createDtmfSender();
assert_throws_dom('InvalidCharacterError', () =>
// 'F' is invalid
dtmfSender.insertDTMF('123FFABC'));
assert_throws_dom('InvalidCharacterError', () =>
// 'E' is invalid
dtmfSender.insertDTMF('E'));
assert_throws_dom('InvalidCharacterError', () =>
// ' ' is invalid
dtmfSender.insertDTMF('# *'));
}, 'insertDTMF() should throw InvalidCharacterError if tones contains invalid DTMF characters');
/*
7.2. insertDTMF
3. If transceiver.stopped is true, throw an InvalidStateError.
*/
test(t => {
const pc = new RTCPeerConnection();
const transceiver = pc.addTransceiver('audio');
const dtmfSender = transceiver.sender.dtmf;
transceiver.stop();
assert_throws_dom('InvalidStateError', () => dtmfSender.insertDTMF(''));
}, 'insertDTMF() should throw InvalidStateError if transceiver is stopped');
/*
7.2. insertDTMF
4. If transceiver.currentDirection is recvonly or inactive, throw an InvalidStateError.
*/
promise_test(async t => {
const caller = new RTCPeerConnection();
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
const transceiver =
caller.addTransceiver('audio', { direction: 'recvonly' });
const dtmfSender = transceiver.sender.dtmf;
const offer = await caller.createOffer();
await caller.setLocalDescription(offer);
await callee.setRemoteDescription(offer);
const stream = await getNoiseStream({audio: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
const [track] = stream.getTracks();
callee.addTrack(track, stream);
const answer = await callee.createAnswer();
await callee.setLocalDescription(answer);
await caller.setRemoteDescription(answer);
assert_equals(transceiver.currentDirection, 'recvonly');
assert_throws_dom('InvalidStateError', () => dtmfSender.insertDTMF(''));
}, 'insertDTMF() should throw InvalidStateError if transceiver.currentDirection is recvonly');
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const transceiver =
pc.addTransceiver('audio', { direction: 'inactive' });
const dtmfSender = transceiver.sender.dtmf;
const offer = await pc.createOffer();
await pc.setLocalDescription(offer);
const answer = await generateAnswer(offer);
await pc.setRemoteDescription(answer);
assert_equals(transceiver.currentDirection, 'inactive');
assert_throws_dom('InvalidStateError', () => dtmfSender.insertDTMF(''));
}, 'insertDTMF() should throw InvalidStateError if transceiver.currentDirection is inactive');
/*
7.2. insertDTMF
The characters a to d MUST be normalized to uppercase on entry and are
equivalent to A to D.
7. Set the object's toneBuffer attribute to tones.
*/
promise_test(async t => {
const dtmfSender = await createDtmfSender();
dtmfSender.insertDTMF('123');
assert_equals(dtmfSender.toneBuffer, '123');
dtmfSender.insertDTMF('ABC');
assert_equals(dtmfSender.toneBuffer, 'ABC');
dtmfSender.insertDTMF('bcd');
assert_equals(dtmfSender.toneBuffer, 'BCD');
}, 'insertDTMF() should set toneBuffer to provided tones normalized, with old tones overridden');
promise_test(async t => {
const pc = new RTCPeerConnection();
t.add_cleanup(() => pc.close());
const [track, mediaStream] = await getTrackFromUserMedia('audio');
const sender = pc.addTrack(track, mediaStream);
await pc.setLocalDescription(await pc.createOffer());
const dtmfSender = sender.dtmf;
pc.removeTrack(sender);
pc.close();
assert_throws_dom('InvalidStateError', () =>
dtmfSender.insertDTMF('123'));
}, 'insertDTMF() after remove and close should reject');
</script>
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