2d.imageData.create1.initial.worker.js (1303B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.create1.initial 3 // Description:createImageData(imgdata) returns transparent black data of the right size 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("createImageData(imgdata) returns transparent black data of the right size"); 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.fillStyle = '#0f0'; 20 ctx.fillRect(0, 0, 100, 50); 21 var imgdata1 = ctx.getImageData(0, 0, 10, 20); 22 var imgdata2 = ctx.createImageData(imgdata1); 23 _assertSame(imgdata2.data.length, imgdata1.data.length, "imgdata2.data.length", "imgdata1.data.length"); 24 _assertSame(imgdata2.width, imgdata1.width, "imgdata2.width", "imgdata1.width"); 25 _assertSame(imgdata2.height, imgdata1.height, "imgdata2.height", "imgdata1.height"); 26 var isTransparentBlack = true; 27 for (var i = 0; i < imgdata2.data.length; ++i) 28 if (imgdata2.data[i] !== 0) 29 isTransparentBlack = false; 30 _assert(isTransparentBlack, "isTransparentBlack"); 31 t.done(); 32 }); 33 done();