tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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worklet-reftest.js (1252B)

      1 /**
      2 * Imports code into a worklet. E.g.
      3 *
      4 * importWorklet(CSS.paintWorklet, {url: 'script.js'});
      5 * importWorklet(CSS.paintWorklet, '(javascript string)');
      6 *
      7 * @param {Worklet} worklet
      8 * @param {(Object|string)} code
      9 */
     10 function importWorklet(worklet, code) {
     11    let url;
     12    if (typeof code === 'object') {
     13      url = code.url;
     14    } else {
     15      const blob = new Blob([code], {type: 'text/javascript'});
     16      url = URL.createObjectURL(blob);
     17    }
     18 
     19    return worklet.addModule(url);
     20 }
     21 
     22 /** @private */
     23 async function animationFrames(frames) {
     24  for (let i = 0; i < frames; i++)
     25    await new Promise(requestAnimationFrame);
     26 }
     27 
     28 /** @private */
     29 async function workletPainted() {
     30    await animationFrames(2);
     31 }
     32 
     33 /**
     34 * To make sure that we take the snapshot at the right time, we do double
     35 * requestAnimationFrame. In the second frame, we take a screenshot, that makes
     36 * sure that we already have a full frame.
     37 *
     38 * @param {Worklet} worklet
     39 * @param {(Object|string)} code
     40 */
     41 async function importWorkletAndTerminateTestAfterAsyncPaint(worklet, code) {
     42    if (typeof worklet === 'undefined') {
     43        takeScreenshot();
     44        return;
     45    }
     46 
     47    await importWorklet(worklet, code);
     48    await workletPainted();
     49    takeScreenshot();
     50 }