41 lines
1.2 KiB
HTML
41 lines
1.2 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<script src="../../resources/testharness.js"></script>
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<script src="../../resources/testharnessreport.js"></script>
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<script>
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promise_test(async (test) => {
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if (window.testRunner)
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testRunner.setUserMediaPermission(true);
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let devices1 = await navigator.mediaDevices.enumerateDevices();
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let eventCount = 0;
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await new Promise((resolve, reject) => {
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navigator.mediaDevices.ondevicechange = (evt) => {
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++eventCount;
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resolve();
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}
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setTimeout(() => {
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reject("navigator.mediaDevices.ondevicechange took too long")
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}, 4000);
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navigator.mediaDevices.getUserMedia({ audio:true, video:true });
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});
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let devices2 = await navigator.mediaDevices.enumerateDevices();
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assert_true(devices1.length < devices2.length, "more devices revealed after gUM");
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assert_equals(eventCount, 1, "one event fired");
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}, "'devicechange' event fired after getUserMedia() if enumerateDevices() previously returned filtered list");
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</script>
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</head>
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<body>
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</body>
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</html>
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