diff options
Diffstat (limited to 'dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js')
| -rw-r--r-- | dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js new file mode 100644 index 0000000000..b6e1133dd1 --- /dev/null +++ b/dom/media/autoplay/test/browser/browser_autoplay_policy_web_audio.js @@ -0,0 +1,217 @@ +/** + * This test is used for testing whether WebAudio can be started correctly in + * different scenarios, such as + * 1) site has existing 'autoplay-media' permission for allowing autoplay + * 2) site has existing 'autoplay-media' permission for blocking autoplay + * 3) site doesn't have permission, start audio context by calling resume() or + * AudioScheduledNode.start() after granting user activation. + */ +"use strict"; + +const { PermissionTestUtils } = ChromeUtils.importESModule( + "resource://testing-common/PermissionTestUtils.sys.mjs" +); + +const PAGE = GetTestWebBasedURL("file_empty.html"); + +function setup_test_preference() { + return SpecialPowers.pushPrefEnv({ + set: [ + ["media.autoplay.default", SpecialPowers.Ci.nsIAutoplay.BLOCKED], + ["media.autoplay.blocking_policy", 0], + ["media.autoplay.block-webaudio", true], + ["media.autoplay.block-event.enabled", true], + ], + }); +} + +function createAudioContext() { + content.ac = new content.AudioContext(); + const ac = content.ac; + + ac.allowedToStart = new Promise(resolve => { + ac.addEventListener( + "statechange", + function () { + if (ac.state === "running") { + resolve(); + } + }, + { once: true } + ); + }); + + ac.notAllowedToStart = new Promise(resolve => { + ac.addEventListener( + "blocked", + function () { + resolve(); + }, + { once: true } + ); + }); +} + +async function checkIfAudioContextIsAllowedToStart(isAllowedToStart) { + const ac = content.ac; + if (isAllowedToStart) { + await ac.allowedToStart; + ok(ac.state === "running", `AudioContext is running.`); + } else { + await ac.notAllowedToStart; + ok(ac.state === "suspended", `AudioContext is not started yet.`); + } +} + +async function resumeAudioContext(isAllowedToStart) { + const ac = content.ac; + const resumePromise = ac.resume(); + const blockedPromise = new Promise(resolve => { + ac.addEventListener( + "blocked", + function () { + resolve(); + }, + { once: true } + ); + }); + + if (isAllowedToStart) { + await resumePromise; + ok(true, `successfully resume AudioContext.`); + } else { + await blockedPromise; + ok(true, `resume is blocked because AudioContext is not allowed to start.`); + } +} + +function startAudioContext(method) { + const ac = content.ac; + if (method == "AudioContext") { + info(`using AudioContext.resume() to start AudioContext`); + ac.resume(); + return; + } + info(`using ${method}.start() to start AudioContext`); + let node; + switch (method) { + case "AudioBufferSourceNode": + node = ac.createBufferSource(); + break; + case "ConstantSourceNode": + node = ac.createConstantSource(); + break; + case "OscillatorNode": + node = ac.createOscillator(); + break; + default: + ok(false, "undefined AudioScheduledSourceNode type"); + return; + } + node.connect(ac.destination); + node.start(); +} + +async function testAutoplayExistingPermission({ name, permission }) { + info(`- starting \"${name}\" -`); + const tab = await BrowserTestUtils.openNewForegroundTab( + window.gBrowser, + PAGE + ); + const browser = tab.linkedBrowser; + + info(`- set the 'autoplay-media' permission -`); + const promptShow = () => + PopupNotifications.getNotification("autoplay-media", browser); + PermissionTestUtils.add(browser.currentURI, "autoplay-media", permission); + ok(!promptShow(), `should not be showing permission prompt yet`); + + info(`- create audio context -`); + await SpecialPowers.spawn(browser, [], createAudioContext); + + info(`- check AudioContext status -`); + const isAllowedToStart = permission === Services.perms.ALLOW_ACTION; + await SpecialPowers.spawn( + browser, + [isAllowedToStart], + checkIfAudioContextIsAllowedToStart + ); + await SpecialPowers.spawn(browser, [isAllowedToStart], resumeAudioContext); + + info(`- remove tab -`); + PermissionTestUtils.remove(browser.currentURI, "autoplay-media"); + await BrowserTestUtils.removeTab(tab); +} + +async function testAutoplayUnknownPermission({ name, method }) { + info(`- starting \"${name}\" -`); + const tab = await BrowserTestUtils.openNewForegroundTab( + window.gBrowser, + PAGE + ); + const browser = tab.linkedBrowser; + + info(`- set the 'autoplay-media' permission to UNKNOWN -`); + const promptShow = () => + PopupNotifications.getNotification("autoplay-media", browser); + PermissionTestUtils.add( + browser.currentURI, + "autoplay-media", + Services.perms.UNKNOWN_ACTION + ); + ok(!promptShow(), `should not be showing permission prompt yet`); + + info(`- create AudioContext which should not start -`); + await SpecialPowers.spawn(browser, [], createAudioContext); + await SpecialPowers.spawn( + browser, + [false], + checkIfAudioContextIsAllowedToStart + ); + + info(`- simulate user activate the page -`); + await SpecialPowers.spawn(browser, [], () => { + content.document.notifyUserGestureActivation(); + }); + + info(`- try to start AudioContext -`); + await SpecialPowers.spawn(browser, [method], startAudioContext); + + info(`- check AudioContext status -`); + await SpecialPowers.spawn( + browser, + [true], + checkIfAudioContextIsAllowedToStart + ); + await SpecialPowers.spawn(browser, [true], resumeAudioContext); + + info(`- remove tab -`); + PermissionTestUtils.remove(browser.currentURI, "autoplay-media"); + await BrowserTestUtils.removeTab(tab); +} + +add_task(async function start_tests() { + info("- setup test preference -"); + await setup_test_preference(); + + await testAutoplayExistingPermission({ + name: "Prexisting allow permission", + permission: Services.perms.ALLOW_ACTION, + }); + await testAutoplayExistingPermission({ + name: "Prexisting block permission", + permission: Services.perms.DENY_ACTION, + }); + const startMethods = [ + "AudioContext", + "AudioBufferSourceNode", + "ConstantSourceNode", + "OscillatorNode", + ]; + for (let method of startMethods) { + await testAutoplayUnknownPermission({ + name: "Unknown permission and start AudioContext after granting user activation", + method, + }); + } +}); |