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path: root/testing/web-platform/tests/html/canvas/offscreen/fill-and-stroke-styles/2d.gradient.interpolate.coloralpha.worker.js
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// DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
// OffscreenCanvas test in a worker:2d.gradient.interpolate.coloralpha
// Description:
// Note:

importScripts("/resources/testharness.js");
importScripts("/html/canvas/resources/canvas-tests.js");

var t = async_test("");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
    throw reason;
});
t.step(function() {

  var canvas = new OffscreenCanvas(100, 50);
  var ctx = canvas.getContext('2d');

  var g = ctx.createLinearGradient(0, 0, 100, 0);
  g.addColorStop(0, 'rgba(255,255,0, 0)');
  g.addColorStop(1, 'rgba(0,0,255, 1)');
  ctx.fillStyle = g;
  ctx.fillRect(0, 0, 100, 50);
  _assertPixelApprox(canvas, 25,25, 190,190,65,65, 3);
  _assertPixelApprox(canvas, 50,25, 126,126,128,128, 3);
  _assertPixelApprox(canvas, 75,25, 62,62,192,192, 3);
  t.done();
});
done();