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<!doctype html>
<html>
<head>
<title>enumerateDevices: test that enumerateDevices is present</title>
<link rel="author" title="Dr Alex Gouaillard" href="mailto:agouaillard@gmail.com"/>
<link rel="help" href="https://w3c.github.io/mediacapture-main/#enumerating-devices">
<meta name='assert' content='Check that the enumerateDevices() method is present.'/>
</head>
<body>
<h1 class="instructions">Description</h1>
<p class="instructions">This test checks for the presence of the
<code>navigator.mediaDevices.enumerateDevices()</code> method.</p>
<div id='log'></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src=permission-helper.js></script>
<script>
"use strict";
//NOTE ALEX: for completion, a test for ondevicechange event is missing.
promise_test(async () => {
assert_not_equals(navigator.mediaDevices.enumerateDevices, undefined, "navigator.mediaDevices.enumerateDevices exists");
const deviceList = await navigator.mediaDevices.enumerateDevices();
for (const mediaInfo of deviceList) {
assert_not_equals(mediaInfo.kind, undefined, "mediaInfo's kind should exist.");
assert_equals(mediaInfo.deviceId, "", "mediaInfo's deviceId should exist and be empty if getUserMedia was never called successfully.");
assert_equals(mediaInfo.label, "", "mediaInfo's label should exist and be empty if getUserMedia was never called successfully.");
assert_equals(mediaInfo.groupId, "", "mediaInfo's groupId should exist and be empty if getUserMedia was never called successfully.");
assert_in_array(mediaInfo.kind, ["videoinput", "audioinput", "audiooutput"]);
}
assert_less_than_equal(deviceList.filter((item) => { return item.kind == "audioinput"; }).length, 1, "there should be zero or one audio input device ");
assert_less_than_equal(deviceList.filter((item) => { return item.kind == "videoinput"; }).length, 1, "there should be zero or one video input device ");
}, "mediaDevices.enumerateDevices() is present and working - before capture");
promise_test(async () => {
await setMediaPermission("granted", ["microphone"]);
await navigator.mediaDevices.getUserMedia({ audio : true });
const deviceList = await navigator.mediaDevices.enumerateDevices();
for (const mediaInfo of deviceList) {
assert_not_equals(mediaInfo.kind, undefined, "mediaInfo's kind should exist.");
assert_not_equals(mediaInfo.deviceId, "", "mediaInfo's deviceId should exist and not be empty.");
assert_in_array(mediaInfo.kind, ["videoinput", "audioinput", "audiooutput"]);
}
}, "mediaDevices.enumerateDevices() is present and working - after capture");
promise_test(async () => {
const deviceList = await navigator.mediaDevices.enumerateDevices();
for (const mediaInfo of deviceList) {
if (mediaInfo.kind == "audioinput" || mediaInfo.kind == "videoinput") {
assert_true(mediaInfo instanceof InputDeviceInfo);
} else if ( mediaInfo.kind == "audiooutput" ) {
assert_true(mediaInfo instanceof MediaDeviceInfo);
} else {
assert_unreached("mediaInfo.kind should be one of 'audioinput', 'videoinput', or 'audiooutput'.")
}
}
}, "InputDeviceInfo is supported");
</script>
</body>
</html>
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