2d.imageData.get.range.worker.js (973B)
1 // DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. 2 // OffscreenCanvas test in a worker:2d.imageData.get.range 3 // Description:getImageData() returns values in the range [0, 255] 4 // Note: 5 6 importScripts("/resources/testharness.js"); 7 importScripts("/html/canvas/resources/canvas-tests.js"); 8 9 var t = async_test("getImageData() returns values in the range [0, 255]"); 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 = '#000'; 20 ctx.fillRect(0, 0, 100, 50); 21 ctx.fillStyle = '#fff'; 22 ctx.fillRect(20, 10, 60, 10); 23 var imgdata1 = ctx.getImageData(10, 5, 1, 1); 24 _assertSame(imgdata1.data[0], 0, "imgdata1.data[\""+(0)+"\"]", "0"); 25 var imgdata2 = ctx.getImageData(30, 15, 1, 1); 26 _assertSame(imgdata2.data[0], 255, "imgdata2.data[\""+(0)+"\"]", "255"); 27 t.done(); 28 }); 29 done();