<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=1041393 --> <head> <meta charset="utf-8"> <title>onndevicechange tests</title> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1152383">ondevicechange tests</a> <script type="application/javascript"> const RESPONSE_WAIT_TIME_MS = 10000; function wait(time, message) { return new Promise(r => setTimeout(() => r(message), time)); } function OnDeviceChangeEvent() { return new Promise(resolve => navigator.mediaDevices.ondevicechange = resolve); } function OnDeviceChangeEventReceived() { return Promise.race([ OnDeviceChangeEvent(), wait(RESPONSE_WAIT_TIME_MS).then(() => Promise.reject("Timed out while waiting for devicechange event")) ]); } function OnDeviceChangeEventNotReceived() { return Promise.race([ OnDeviceChangeEvent().then(() => Promise.reject("ondevicechange event is fired unexpectedly.")), wait(RESPONSE_WAIT_TIME_MS) ]); } var pushPrefs = (...p) => new Promise(r => SpecialPowers.pushPrefEnv({set: p}, r)); var videoTracks; SimpleTest.requestCompleteLog(); SimpleTest.waitForExplicitFinish(); SimpleTest.requestFlakyTimeout("Fake devicechange event is fired periodically, \ so we need to wait a while to make sure the event is fired or not as we expect."); var videoTracks; function wait(time, message) { return new Promise(r => setTimeout(() => r(message), time)); } pushPrefs(["media.ondevicechange.fakeDeviceChangeEvent.enabled", true]) .then(() => pushPrefs(["media.navigator.permission.disabled", false])) .then(() => pushPrefs(["media.ondevicechange.enabled", true])) .then(() => info("assure devicechange event is NOT fired when gUM is NOT in use and permanent permission is NOT granted")) .then(() => OnDeviceChangeEventNotReceived()) .then(() => ok(true, "devicechange event is NOT fired when gUM is NOT in use and permanent permission is NOT granted")) .then(() => pushPrefs(['media.navigator.permission.disabled', true])) .then(() => info("assure devicechange event is fired when gUM is NOT in use and permanent permission is granted")) .then(() => OnDeviceChangeEventReceived()) .then(() => ok(true, "devicechange event is fired when gUM is NOT in use and permanent permission is granted")) .then(() => navigator.mediaDevices.getUserMedia({video: true, fake: true})) .then(st => {videoTracks = st.getVideoTracks();}) .then(() => info("assure devicechange event is fired when gUM is in use")) .then(() => OnDeviceChangeEventReceived()) .then(() => ok(true, "devicechange event is fired when gUM is in use")) .catch(e => ok(false, "Error: " + e)) .then(() => { if(videoTracks) videoTracks.forEach(track => track.stop()); }) .then(() => SimpleTest.finish()); </script> </pre> </body> </html>