tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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perftest_http3_youtube_watch.js (2272B)

      1 // This Source Code Form is subject to the terms of the Mozilla Public
      2 // License, v. 2.0. If a copy of the MPL was not distributed with this
      3 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
      4 /* eslint-env node */
      5 
      6 /*
      7 Ensure the `--firefox.preference=network.http.http3.enable:true` is
      8 set for this test.
      9 */
     10 
     11 async function test(context, commands) {
     12  let rootUrl = "https://www.youtube.com/watch?v=COU5T-Wafa4";
     13  let waitTime = 20000;
     14 
     15  if (
     16    (typeof context.options.browsertime !== "undefined") &
     17    (typeof context.options.browsertime.waitTime !== "undefined")
     18  ) {
     19    waitTime = context.options.browsertime.waitTime;
     20  }
     21 
     22  // Make firefox learn of HTTP/3 server
     23  await commands.navigate(rootUrl);
     24 
     25  let cycles = 1;
     26  for (let cycle = 0; cycle < cycles; cycle++) {
     27    await commands.measure.start("pageload");
     28    await commands.navigate(rootUrl);
     29 
     30    // Make sure the video is running
     31    if (
     32      await commands.js.run(`return document.querySelector("video").paused;`)
     33    ) {
     34      throw new Error("Video should be running but it's paused");
     35    }
     36 
     37    // Disable youtube autoplay
     38    await commands.click.byIdAndWait("toggleButton");
     39 
     40    // Start playback quality measurements
     41    const start = await commands.js.run(`return performance.now();`);
     42    while (
     43      !(await commands.js.run(`
     44          return document.querySelector("video").ended;
     45      `)) &
     46      !(await commands.js.run(`
     47          return document.querySelector("video").paused;
     48      `)) &
     49      ((await commands.js.run(`return performance.now();`)) - start < waitTime)
     50    ) {
     51      await commands.wait.byTime(5000);
     52      context.log.info("playing...");
     53    }
     54 
     55    // Video done, now gather metrics
     56    const playbackQuality = await commands.js.run(
     57      `return document.querySelector("video").getVideoPlaybackQuality();`
     58    );
     59    await commands.measure.stop();
     60 
     61    commands.measure.result[0].browserScripts.pageinfo.droppedFrames =
     62      playbackQuality.droppedVideoFrames;
     63    commands.measure.result[0].browserScripts.pageinfo.decodedFrames =
     64      playbackQuality.totalVideoFrames;
     65  }
     66 }
     67 
     68 module.exports = {
     69  test,
     70  owner: "Network Team",
     71  component: "netwerk",
     72  name: "youtube-noscroll",
     73  description: "Measures quality of the video being played.",
     74 };