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Test Info: Errors
- This test failed 2 times in the preceding 30 days. quicksearch this test
- Manifest: dom/media/test/mochitest.toml
<!DOCTYPE HTML>
<html>
<!--
-->
<head>
<meta charset="utf-8">
<title>ImageCapture tests</title>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="gUM_support.js"></script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1041393">ImageCapture tests</a>
<script type="application/javascript">
// Check if the callback returns even no JS reference on it.
async function gcTest(track) {
const repeat = 100;
const promises = [];
for (let i = 0; i < repeat; ++i) {
const imageCapture = new ImageCapture(track);
promises.push(new Promise((resolve, reject) => {
imageCapture.onphoto = resolve;
imageCapture.onerror = () =>
reject(new Error(`takePhoto gcTest failure for capture ${i}`));
}));
imageCapture.takePhoto();
}
info("Call gc ");
SpecialPowers.gc();
await Promise.all(promises);
}
// Continue calling takePhoto() in rapid succession.
async function rapidTest(track) {
const repeat = 100;
const imageCapture = new ImageCapture(track);
// "error" can fire synchronously in `takePhoto`
const errorPromise = new Promise(r => imageCapture.onerror = r);
for (let i = 0; i < repeat; ++i) {
imageCapture.takePhoto();
}
for (let i = 0; i < repeat; ++i) {
await Promise.race([
new Promise(r => imageCapture.onphoto = r),
errorPromise.then(() => Promise.reject(new Error("Capture failed"))),
]);
}
}
// Check if the blob is decodable.
async function blobTest(track) {
const imageCapture = new ImageCapture(track);
// "error" can fire synchronously in `takePhoto`
const errorPromise = new Promise(r => imageCapture.onerror = r);
imageCapture.takePhoto();
const blob = await Promise.race([
new Promise(r => imageCapture.onphoto = r),
errorPromise.then(() => Promise.reject(new Error("Capture failed"))),
]);
const img = new Image();
img.src = URL.createObjectURL(blob.data);
await new Promise((resolve, reject) => {
img.onload = resolve;
img.onerror = () => reject(new Error("Decode failed"));
});
}
// It should return an error event after disabling video track.
async function trackTest(track) {
const imageCapture = new ImageCapture(track);
track.enabled = false;
try {
const errorPromise = new Promise(r => imageCapture.onerror = r);
imageCapture.takePhoto();
const error = await Promise.race([
errorPromise,
new Promise(r => imageCapture.onphoto = r).then(
() => Promise.reject(new Error("Disabled video track should fail"))),
]);
is(error.imageCaptureError.code, error.imageCaptureError.PHOTO_ERROR,
"Expected error code")
} finally {
track.enabled = true;
}
}
async function init() {
// Use loopback camera if available, otherwise fake.
// MediaTrackGraph will be the backend of ImageCapture.
await setupGetUserMediaTestPrefs();
let stream = await navigator.mediaDevices.getUserMedia({video: true});
return stream.getVideoTracks()[0];
}
async function start() {
try {
const track = await init();
info("ImageCapture track disable test.");
await trackTest(track);
info("ImageCapture blob test.");
await blobTest(track);
info("ImageCapture rapid takePhoto() test.");
await rapidTest(track);
info("ImageCapture multiple instances test.");
await gcTest(track);
} catch (e) {
ok(false, "Unexpected error during test: " + e);
} finally {
SimpleTest.finish();
}
}
SimpleTest.requestCompleteLog();
SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({
"set": [
["dom.imagecapture.enabled", true],
["media.navigator.permission.disabled", true],
],
}, start);
</script>
</pre>
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</html>