tor-browser

The Tor Browser
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2d.composite.globalAlpha.range.worker.js (1074B)

      1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py.
      2 // OffscreenCanvas test in a worker:2d.composite.globalAlpha.range
      3 // Description:
      4 // Note:
      5 
      6 importScripts("/resources/testharness.js");
      7 importScripts("/html/canvas/resources/canvas-tests.js");
      8 
      9 var t = async_test("");
     10 var t_pass = t.done.bind(t);
     11 var t_fail = t.step_func(function(reason) {
     12    throw reason;
     13 });
     14 t.step(function() {
     15 
     16  var canvas = new OffscreenCanvas(100, 50);
     17  var ctx = canvas.getContext('2d');
     18 
     19  ctx.globalAlpha = 0.5;
     20  // This may not set it to exactly 0.5 if it is rounded/quantised, so
     21  // remember for future comparisons.
     22  var a = ctx.globalAlpha;
     23  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
     24  ctx.globalAlpha = 1.1;
     25  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
     26  ctx.globalAlpha = -0.1;
     27  _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
     28  ctx.globalAlpha = 0;
     29  _assertSame(ctx.globalAlpha, 0, "ctx.globalAlpha", "0");
     30  ctx.globalAlpha = 1;
     31  _assertSame(ctx.globalAlpha, 1, "ctx.globalAlpha", "1");
     32  t.done();
     33 });
     34 done();