1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
const EMPTY_PAGE_URL = GetTestWebBasedURL("file_empty.html");
/**
* When web audio changes its audible state, the sound indicator should be
* updated as well, which should appear only when web audio is audible.
*/
add_task(
async function testWebAudioAudibilityWouldAffectTheAppearenceOfTabSoundIndicator() {
info(`sound indicator should appear when web audio plays audible sound`);
const tab = await BrowserTestUtils.openNewForegroundTab(
gBrowser,
EMPTY_PAGE_URL
);
await initWebAudioDocument(tab);
await waitForTabSoundIndicatorAppears(tab);
info(`sound indicator should disappear when suspending web audio`);
await suspendWebAudio(tab);
await waitForTabSoundIndicatorDisappears(tab);
info(`sound indicator should appear when resuming web audio`);
await resumeWebAudio(tab);
await waitForTabSoundIndicatorAppears(tab);
info(`sound indicator should disappear when muting web audio by docShell`);
await muteWebAudioByDocShell(tab);
await waitForTabSoundIndicatorDisappears(tab);
info(`sound indicator should appear when unmuting web audio by docShell`);
await unmuteWebAudioByDocShell(tab);
await waitForTabSoundIndicatorAppears(tab);
info(`sound indicator should disappear when muting web audio by gain node`);
await muteWebAudioByGainNode(tab);
await waitForTabSoundIndicatorDisappears(tab);
info(`sound indicator should appear when unmuting web audio by gain node`);
await unmuteWebAudioByGainNode(tab);
await waitForTabSoundIndicatorAppears(tab);
info(`sound indicator should disappear when closing web audio`);
await closeWebAudio(tab);
await waitForTabSoundIndicatorDisappears(tab);
info("remove tab");
BrowserTestUtils.removeTab(tab);
}
);
add_task(async function testSoundIndicatorShouldDisappearAfterTabNavigation() {
info("create a tab loading media document");
const tab = await createBlankForegroundTab();
info(`sound indicator should appear when audible web audio starts playing`);
await Promise.all([
initWebAudioDocument(tab),
waitForTabSoundIndicatorAppears(tab),
]);
info(`sound indicator should disappear after navigating tab to blank page`);
await Promise.all([
BrowserTestUtils.loadURIString(tab.linkedBrowser, "about:blank"),
waitForTabSoundIndicatorDisappears(tab),
]);
info("remove tab");
BrowserTestUtils.removeTab(tab);
});
add_task(
async function testSoundIndicatorShouldDisappearAfterWebAudioBecomesSilent() {
info("create a tab loading media document");
const tab = await createBlankForegroundTab();
info(`sound indicator should appear when audible web audio starts playing`);
await Promise.all([
initWebAudioDocument(tab, { duration: 0.1 }),
waitForTabSoundIndicatorAppears(tab),
]);
info(`sound indicator should disappear after web audio become silent`);
await waitForTabSoundIndicatorDisappears(tab);
info("remove tab");
BrowserTestUtils.removeTab(tab);
}
);
add_task(async function testNoSoundIndicatorWhenSimplyCreateAudioContext() {
info("create a tab loading media document");
const tab = await createBlankForegroundTab({ needObserver: true });
info(`sound indicator should not appear when simply create an AudioContext`);
await SpecialPowers.spawn(tab.linkedBrowser, [], async _ => {
content.ac = new content.AudioContext();
while (content.ac.state != "running") {
info(`wait until web audio starts running`);
await new Promise(r => (content.ac.onstatechange = r));
}
});
ok(!tab.observer.hasEverUpdated(), "didn't ever update sound indicator");
info("remove tab");
BrowserTestUtils.removeTab(tab);
});
/**
* Following are helper functions
*/
function initWebAudioDocument(tab, { duration } = {}) {
// eslint-disable-next-line no-shadow
return SpecialPowers.spawn(tab.linkedBrowser, [duration], async duration => {
content.ac = new content.AudioContext();
const ac = content.ac;
const dest = ac.destination;
const source = new content.OscillatorNode(ac);
source.start(ac.currentTime);
if (duration != undefined) {
source.stop(ac.currentTime + duration);
}
// create a gain node for future muting/unmuting
content.gainNode = ac.createGain();
source.connect(content.gainNode);
content.gainNode.connect(dest);
while (ac.state != "running") {
info(`wait until web audio starts running`);
await new Promise(r => (ac.onstatechange = r));
}
});
}
function suspendWebAudio(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], async _ => {
await content.ac.suspend();
});
}
function resumeWebAudio(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], async _ => {
await content.ac.resume();
});
}
function closeWebAudio(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], async _ => {
await content.ac.close();
});
}
function muteWebAudioByDocShell(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
content.docShell.allowMedia = false;
});
}
function unmuteWebAudioByDocShell(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
content.docShell.allowMedia = true;
});
}
function muteWebAudioByGainNode(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
content.gainNode.gain.setValueAtTime(0, content.ac.currentTime);
});
}
function unmuteWebAudioByGainNode(tab) {
return SpecialPowers.spawn(tab.linkedBrowser, [], _ => {
content.gainNode.gain.setValueAtTime(1.0, content.ac.currentTime);
});
}
|
