2d.imageData.object.readonly.worker.js (1250B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.object.readonly 3 // Description:ImageData objects properties are read-only 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("ImageData objects properties are read-only"); 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 var imgdata = ctx.getImageData(0, 0, 10, 10); 20 var w = imgdata.width; 21 var h = imgdata.height; 22 var d = imgdata.data; 23 imgdata.width = 123; 24 imgdata.height = 123; 25 imgdata.data = [100,100,100,100]; 26 _assertSame(imgdata.width, w, "imgdata.width", "w"); 27 _assertSame(imgdata.height, h, "imgdata.height", "h"); 28 _assertSame(imgdata.data, d, "imgdata.data", "d"); 29 _assertSame(imgdata.data[0], 0, "imgdata.data[\""+(0)+"\"]", "0"); 30 _assertSame(imgdata.data[1], 0, "imgdata.data[\""+(1)+"\"]", "0"); 31 _assertSame(imgdata.data[2], 0, "imgdata.data[\""+(2)+"\"]", "0"); 32 _assertSame(imgdata.data[3], 0, "imgdata.data[\""+(3)+"\"]", "0"); 33 t.done(); 34 }); 35 done();