tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

test_imagecapture.html (3872B)

      1 <!DOCTYPE HTML>
      2 <html>
      3 <!--
      4 https://bugzilla.mozilla.org/show_bug.cgi?id=1041393
      5 -->
      6 <head>
      7  <meta charset="utf-8">
      8  <title>ImageCapture tests</title>
      9  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
     10  <script src="/tests/SimpleTest/SimpleTest.js"></script>
     11  <script type="text/javascript" src="gUM_support.js"></script>
     12 </head>
     13 <body>
     14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1041393">ImageCapture tests</a>
     15 <script type="application/javascript">
     16 
     17 // Check if the callback returns even no JS reference on it.
     18 async function gcTest(track) {
     19  const repeat = 100;
     20  const promises = [];
     21  for (let i = 0; i < repeat; ++i) {
     22    const imageCapture = new ImageCapture(track);
     23    promises.push(new Promise((resolve, reject) => {
     24      imageCapture.onphoto = resolve;
     25      imageCapture.onerror = () =>
     26        reject(new Error(`takePhoto gcTest failure for capture ${i}`));
     27    }));
     28    imageCapture.takePhoto();
     29  }
     30  info("Call gc ");
     31  SpecialPowers.gc();
     32  await Promise.all(promises);
     33 }
     34 
     35 // Continue calling takePhoto() in rapid succession.
     36 async function rapidTest(track) {
     37  const repeat = 100;
     38  const imageCapture = new ImageCapture(track);
     39  // "error" can fire synchronously in `takePhoto`
     40  const errorPromise = new Promise(r => imageCapture.onerror = r);
     41  for (let i = 0; i < repeat; ++i) {
     42    imageCapture.takePhoto();
     43  }
     44  for (let i = 0; i < repeat; ++i) {
     45    await Promise.race([
     46      new Promise(r => imageCapture.onphoto = r),
     47      errorPromise.then(() => Promise.reject(new Error("Capture failed"))),
     48    ]);
     49  }
     50 }
     51 
     52 // Check if the blob is decodable.
     53 async function blobTest(track) {
     54  const imageCapture = new ImageCapture(track);
     55  // "error" can fire synchronously in `takePhoto`
     56  const errorPromise = new Promise(r => imageCapture.onerror = r);
     57  imageCapture.takePhoto();
     58  const blob = await Promise.race([
     59    new Promise(r => imageCapture.onphoto = r),
     60    errorPromise.then(() => Promise.reject(new Error("Capture failed"))),
     61  ]);
     62 
     63  const img = new Image();
     64  img.src = URL.createObjectURL(blob.data);
     65  await new Promise((resolve, reject) => {
     66    img.onload = resolve;
     67    img.onerror = () => reject(new Error("Decode failed"));
     68  });
     69 }
     70 
     71 // It should return an error event after disabling video track.
     72 async function trackTest(track) {
     73  const imageCapture = new ImageCapture(track);
     74  track.enabled = false;
     75  try {
     76    const errorPromise = new Promise(r => imageCapture.onerror = r);
     77    imageCapture.takePhoto();
     78    const error = await Promise.race([
     79      errorPromise,
     80      new Promise(r => imageCapture.onphoto = r).then(
     81        () => Promise.reject(new Error("Disabled video track should fail"))),
     82    ]);
     83    is(error.imageCaptureError.code, error.imageCaptureError.PHOTO_ERROR,
     84      "Expected error code")
     85  } finally {
     86    track.enabled = true;
     87  }
     88 }
     89 
     90 async function init() {
     91  // Use loopback camera if available, otherwise fake.
     92  // MediaTrackGraph will be the backend of ImageCapture.
     93  await setupGetUserMediaTestPrefs();
     94  let stream = await navigator.mediaDevices.getUserMedia({video: true});
     95  return stream.getVideoTracks()[0];
     96 }
     97 
     98 async function start() {
     99  try {
    100    const track = await init();
    101    info("ImageCapture track disable test.");
    102    await trackTest(track);
    103    info("ImageCapture blob test.");
    104    await blobTest(track);
    105    info("ImageCapture rapid takePhoto() test.");
    106    await rapidTest(track);
    107    info("ImageCapture multiple instances test.");
    108    await gcTest(track);
    109  } catch (e) {
    110    ok(false, "Unexpected error during test: " + e);
    111  } finally {
    112    SimpleTest.finish();
    113  }
    114 }
    115 
    116 SimpleTest.requestCompleteLog();
    117 SimpleTest.waitForExplicitFinish();
    118 
    119 SpecialPowers.pushPrefEnv({
    120  "set": [
    121    ["dom.imagecapture.enabled", true],
    122    ["media.navigator.permission.disabled", true],
    123  ],
    124 }, start);
    125 </script>
    126 </pre>
    127 </body>
    128 </html>