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path: root/testing/web-platform/tests/html/canvas/offscreen/transformations/2d.transformation.scale.negative.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.transformation.scale.negative
// Description:scale() with negative scale factors works
// Note:

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

var t = async_test("scale() with negative scale factors works");
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');

  ctx.fillStyle = '#f00';
  ctx.fillRect(0, 0, 100, 50);

  ctx.save();
  ctx.scale(-1, 1);
  ctx.fillStyle = '#0f0';
  ctx.fillRect(-50, 0, 50, 50);
  ctx.restore();

  ctx.save();
  ctx.scale(1, -1);
  ctx.fillStyle = '#0f0';
  ctx.fillRect(50, -50, 50, 50);
  ctx.restore();
  _assertPixel(canvas, 25,25, 0,255,0,255);
  _assertPixel(canvas, 75,25, 0,255,0,255);
  t.done();
});
done();