| <!DOCTYPE html> |
| <html> |
| <script src="../../resources/js-test.js"></script> |
| <body> |
| <script id="myWorker" type="text/worker"> |
| var setWidth = Math.pow(2, 31); |
| var setHeight = Math.pow(2, 31); |
| |
| self.onmessage = function(e) { |
| var canvas1 = new OffscreenCanvas(setWidth, setHeight); |
| self.postMessage({version:'canvas1', width:canvas1.width, height:canvas1.height}); |
| |
| var canvas2 = new OffscreenCanvas(null, null); |
| self.postMessage({version:'canvas2', width:canvas2.width, height:canvas2.height}); |
| }; |
| </script> |
| |
| <script> |
| jsTestIsAsync = true; |
| description("Tests that the OffscreenCanvas can handle invalid arguments on a worker"); |
| |
| var width; |
| var height; |
| var setWidth = Math.pow(2, 31); |
| var setHeight = Math.pow(2, 31); |
| |
| function makeWorker(script) { |
| var blob = new Blob([script]); |
| return new Worker(URL.createObjectURL(blob)); |
| } |
| |
| function handleMessageFromWorker(msg) { |
| width = msg.data.width; |
| height = msg.data.height; |
| switch (msg.data.version) { |
| case 'canvas1': |
| shouldBe('width', 'setWidth-1'); |
| shouldBe('height', 'setHeight-1'); |
| break; |
| case 'canvas2': |
| shouldBe('width', '0'); |
| shouldBe('height', '0'); |
| finishJSTest(); |
| break; |
| default: |
| testFailed("Unexpected failure"); |
| break; |
| } |
| } |
| |
| var worker = makeWorker(document.getElementById('myWorker').textContent); |
| worker.addEventListener('message', handleMessageFromWorker); |
| worker.postMessage(""); |
| </script> |
| |
| </body> |
| </html> |
