LayoutTests/imported/w3c/web-platform-tests/offscreen-canvas/compositing/2d.composite.globalAlpha.invalid.worker.js

// DO NOT EDIT! This test has been generated by tools/gentest.py.
// OffscreenCanvas test in a worker:2d.composite.globalAlpha.invalid
// Description:
// Note:

importScripts("/resources/testharness.js");
importScripts("/2dcontext/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 offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');

ctx.globalAlpha = 0.5;
var a = ctx.globalAlpha; // might not be exactly 0.5, if it is rounded/quantised, so remember for future comparisons
ctx.globalAlpha = Infinity;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
ctx.globalAlpha = -Infinity;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
ctx.globalAlpha = NaN;
_assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a");
t.done();

});
done();