| <!DOCTYPE html> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/2dcontext/resources/canvas-tests.js"></script> |
| <link rel="help" href="https://html.spec.whatwg.org/#offscreencanvas"> |
| |
| <script id="myWorker" type="text/worker"> |
| |
| function isInvalidStateError(funcStr, offscreenCanvas) |
| { |
| try { |
| eval(funcStr); |
| } catch (e) { |
| if (e instanceof DOMException && e.name == "InvalidStateError") |
| return true; |
| return false; |
| } |
| } |
| |
| function testExceptionWith2DContext() |
| { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| var ctx = offscreenCanvas.getContext('2d'); |
| return isInvalidStateError("self.postMessage(offscreenCanvas, [offscreenCanvas])", offscreenCanvas); |
| } |
| |
| function testExceptionWithWebGLContext() |
| { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| var ctx = offscreenCanvas.getContext('webgl'); |
| return isInvalidStateError("self.postMessage(offscreenCanvas, [offscreenCanvas])", offscreenCanvas); |
| } |
| |
| function testExceptionWithDetachedOffscreenCanvas1() |
| { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| self.postMessage(offscreenCanvas, [offscreenCanvas]); |
| return isInvalidStateError("self.postMessage(offscreenCanvas, [offscreenCanvas])", offscreenCanvas); |
| } |
| |
| function testExceptionWithDetachedOffscreenCanvas2() |
| { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| self.postMessage(offscreenCanvas, [offscreenCanvas]); |
| return isInvalidStateError("offscreenCanvas.getContext('2d')", offscreenCanvas); |
| } |
| |
| function testExceptionWithDetachedOffscreenCanvas3() |
| { |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| self.postMessage(offscreenCanvas, [offscreenCanvas]); |
| return isInvalidStateError("offscreenCanvas.getContext('webgl')", offscreenCanvas); |
| } |
| |
| self.onmessage = function(e) { |
| switch(e.data) { |
| case 'test1': |
| var offscreenCanvas = new OffscreenCanvas(10, 10); |
| self.postMessage(offscreenCanvas, [offscreenCanvas]); |
| break; |
| case 'test2': |
| self.postMessage(testExceptionWith2DContext()); |
| break; |
| case 'test3': |
| self.postMessage(testExceptionWithWebGLContext()); |
| break; |
| case 'test4': |
| self.postMessage(testExceptionWithDetachedOffscreenCanvas1()); |
| break; |
| case 'test5': |
| self.postMessage(testExceptionWithDetachedOffscreenCanvas2()); |
| break; |
| case 'test6': |
| self.postMessage(testExceptionWithDetachedOffscreenCanvas3()); |
| break; |
| } |
| }; |
| |
| </script> |
| |
| <script> |
| function makeWorker(test) { |
| var blob = new Blob([document.getElementById("myWorker").textContent]); |
| var worker = new Worker(URL.createObjectURL(blob)); |
| worker.onerror = test.unreached_func("error"); |
| return worker; |
| } |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| assert_equals(msg.data.width, 10); |
| assert_equals(msg.data.height, 10); |
| })); |
| worker.postMessage('test1'); |
| }, "Test that OffscreenCanvas's size is correct after being transferred from a worker."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| assert_true(msg.data); |
| })); |
| worker.postMessage('test2'); |
| }, "Test that transfer an OffscreenCanvas that has a 2d context throws exception in a worker."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| assert_true(msg.data); |
| })); |
| worker.postMessage('test3'); |
| }, "Test that transfer an OffscreenCanvas that has a webgl context throws exception in a worker."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| if (msg.data == true || msg.data == false) |
| assert_true(msg.data); |
| })); |
| worker.postMessage('test4'); |
| }, "Test that transfer an OffscreenCanvas twice throws exception in a worker."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| if (msg.data == true || msg.data == false) |
| assert_true(msg.data); |
| })); |
| worker.postMessage('test5'); |
| }, "Test that calling getContext('2d') on a detached OffscreenCanvas throws exception in a worker."); |
| |
| async_test(function(t) { |
| var worker = makeWorker(t); |
| worker.addEventListener('message', t.step_func_done(function(msg) { |
| if (msg.data == true || msg.data == false) |
| assert_true(msg.data); |
| })); |
| worker.postMessage('test6'); |
| }, "Test that calling getContext('webgl') on a detached OffscreenCanvas throws exception in a worker."); |
| |
| </script> |
| |
