testing/web-platform/tests/html/canvas/offscreen/drawing-images-to-the-canvas/2d.drawImage.path.worker.js

   1 // META: timeout=long
   2 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
   3 // OffscreenCanvas test in a worker:2d.drawImage.path
   4 // Description:
   5 // Note:
   6
   7 importScripts("/resources/testharness.js");
   8 importScripts("/html/canvas/resources/canvas-tests.js");
   9
  10 var t = async_test("");
  11 var t_pass = t.done.bind(t);
  12 var t_fail = t.step_func(function(reason) {
  13     throw reason;
  14 });
  15 t.step(function() {
  16
  17 var offscreenCanvas = new OffscreenCanvas(100, 50);
  18 var ctx = offscreenCanvas.getContext('2d');
  19
  20 ctx.fillStyle = '#0f0';
  21 ctx.rect(0, 0, 100, 50);
  22 var promise = new Promise(function(resolve, reject) {
  23     var xhr = new XMLHttpRequest();
  24     xhr.open("GET", '/images/red.png');
  25     xhr.responseType = 'blob';
  26     xhr.send();
  27     xhr.onload = function() {
  28         resolve(xhr.response);
  29     };
  30 });
  31 promise.then(function(response) {
  32     createImageBitmap(response).then(bitmap => {
  33         ctx.drawImage(bitmap, 0, 0);
  34         ctx.fill();
  35         _assertPixelApprox(offscreenCanvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
  36     }, t_fail);
  37 }).then(t_pass, t_fail);
  38
  39 });
  40 done();