// DO NOT EDIT! This test has been generated by tools/gentest.py. // OffscreenCanvas test in a worker:2d.composite.globalAlpha.range // Description: // Note: importScripts("/resources/testharness.js"); importScripts("/common/canvas-tests.js"); var t = async_test(""); 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 = 1.1; _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a"); ctx.globalAlpha = -0.1; _assertSame(ctx.globalAlpha, a, "ctx.globalAlpha", "a"); ctx.globalAlpha = 0; _assertSame(ctx.globalAlpha, 0, "ctx.globalAlpha", "0"); ctx.globalAlpha = 1; _assertSame(ctx.globalAlpha, 1, "ctx.globalAlpha", "1"); t.done(); }); done();