<!doctype html>
<html>
<head>
<title>Assigning a MediaStream to a media element and not playing it results in rendering a first frame</title>
</head>
<body>
<p class="instructions">When prompted, accept to share your video stream.</p>
<h1 class="instructions">Description</h1>
<p class="instructions">This test checks that a HTMLMediaElement with an
assigned MediaStream with a video track fires the appropriate events to reach
the "canplay" event and readyState HAVE_ENOUGH_DATA even when not playing or
autoplaying.</p>
<video id="vid"></video>
<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';
const vid = document.getElementById("vid");
promise_test(async t => {
const wait = ms => new Promise(r => t.step_timeout(r, ms));
const timeout = (promise, time, msg) => Promise.race([
promise,
wait(time).then(() => Promise.reject(new Error(msg)))
]);
await setMediaPermission("granted", ["camera"]);
const stream = await navigator.mediaDevices.getUserMedia({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
vid.srcObject = stream;
await timeout(new Promise(r => vid.oncanplay = r), 8000, "canplay timeout");
assert_equals(vid.readyState, vid.HAVE_ENOUGH_DATA,
"readyState is HAVE_ENOUGH_DATA after \"canplay\"");
}, "Tests that loading a MediaStream in a media element eventually results in \"canplay\" even when not playing or autoplaying");
promise_test(async t => {
const wait = ms => new Promise(r => t.step_timeout(r, ms));
const timeout = (promise, time, msg) => Promise.race([
promise,
wait(time).then(() => Promise.reject(new Error(msg)))
]);
const unexpected = e => assert_unreached(`Got unexpected event ${e.type}`);
const stream = await navigator.mediaDevices.getUserMedia({video: true});
t.add_cleanup(() => {
vid.ondurationchange = null;
stream.getTracks().forEach(track => track.stop())
});
vid.srcObject = stream;
vid.onloadstart = unexpected;
vid.ondurationchange = unexpected;
vid.onresize = unexpected;
vid.onloadedmetadata = unexpected;
vid.onloadeddata = unexpected;
vid.oncanplay = unexpected;
vid.oncanplaythrough = unexpected;
await timeout(new Promise(r => vid.onloadstart = r), 8000,
"loadstart timeout");
vid.onloadstart = unexpected;
await timeout(new Promise(r => vid.ondurationchange = r), 8000,
"durationchange timeout");
vid.ondurationchange = unexpected;
assert_equals(vid.duration, Infinity, "duration changes to Infinity");
await timeout(new Promise(r => vid.onresize = r), 8000,
"resize timeout");
vid.onresize = unexpected;
assert_not_equals(vid.videoWidth, 0,
"videoWidth is something after \"resize\"");
assert_not_equals(vid.videoHeight, 0,
"videoHeight is something after \"resize\"");
await timeout(new Promise(r => vid.onloadedmetadata = r), 8000,
"loadedmetadata timeout");
vid.onloadedmetadata = unexpected;
assert_greater_than_equal(vid.readyState, vid.HAVE_METADATA,
"readyState is at least HAVE_METADATA after \"loadedmetadata\"");
await timeout(new Promise(r => vid.onloadeddata = r), 8000,
"loadeddata timeout");
vid.onloadeddata = unexpected;
assert_equals(vid.readyState, vid.HAVE_ENOUGH_DATA,
"readyState is HAVE_ENOUGH_DATA after \"loadeddata\" since there's no buffering");
await timeout(new Promise(r => vid.oncanplay = r), 8000, "canplay timeout");
vid.oncanplay = unexpected;
assert_equals(vid.readyState, vid.HAVE_ENOUGH_DATA,
"readyState is HAVE_ENOUGH_DATA after \"canplay\" since there's no buffering");
await timeout(new Promise(r => vid.oncanplaythrough = r), 8000,
"canplaythrough timeout");
vid.oncanplaythrough = unexpected;
assert_equals(vid.readyState, vid.HAVE_ENOUGH_DATA,
"readyState is HAVE_ENOUGH_DATA after \"canplaythrough\"");
// Crank the event loop to see whether any more events are fired.
await wait(100);
}, "Tests that loading a MediaStream in a media element sees all the expected (deterministic) events even when not playing or autoplaying");
</script>
</body>
</html>
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