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Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html new file mode 100644 index 0000000000..1347e7b50b --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/manual/the-offscreen-canvas/offscreencanvas.transfercontrol.to.offscreen.w.html @@ -0,0 +1,76 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> +<link rel="help" href="https://html.spec.whatwg.org/#dom-canvas-transfercontroltooffscreen"> + +<script id="myWorker" type="text/worker"> + +function testSize(offscreenCanvas) +{ + if (offscreenCanvas.width == 100 && offscreenCanvas.height == 50) + return true; + return false; +} + +self.onmessage = function(e) { + switch (e.data.msg) { + case 'test1': + self.postMessage(testSize(e.data.data)); + break; + case 'test2': + self.postMessage(""); + break; + case 'test3': + self.postMessage(""); + break; + } +}; + +</script> + +<script> +function makeWorker(script) +{ + var blob = new Blob([script]); + return new Worker(URL.createObjectURL(blob)); +} + +async_test(function(t) { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + var worker = makeWorker(document.getElementById("myWorker").textContent); + worker.addEventListener('message', t.step_func_done(function(msg) { + assert_true(msg.data); + })); + worker.postMessage({msg: 'test1', data: offscreenCanvas}, [offscreenCanvas]); +}, "Test that an OffscreenCanvas generated by transferControlToOffscreen gets correct width and height when it is transferred to a worker"); + +async_test(function(t) { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + var worker = makeWorker(document.getElementById("myWorker").textContent); + worker.addEventListener('message', t.step_func_done(function(msg) { + assert_throws_dom("InvalidStateError", function() { placeholder.getContext('2d'); }); + })); + worker.postMessage({msg: 'test2', data: offscreenCanvas}, [offscreenCanvas]); +}, "Test that calling getContext on a placeholder canvas that is transferred its control to an OffscreenCanvas throws an exception, when the OffscreenCanvas is transferred to a worker"); + +async_test(function(t) { + var placeholder = document.createElement('canvas'); + placeholder.width = 100; + placeholder.height = 50; + var offscreenCanvas = placeholder.transferControlToOffscreen(); + var worker = makeWorker(document.getElementById("myWorker").textContent); + worker.addEventListener('message', t.step_func_done(function(msg) { + assert_throws_dom("InvalidStateError", function() { placeholder.transferControlToOffscreen(); }); + })); + worker.postMessage({msg: 'test3', data: offscreenCanvas}, [offscreenCanvas]); +}, "Test that calling transferControlToOffscreen twice throws an exception, when its associated OffscreenCanvas is transferred to a worker"); + +</script> + |