| <!DOCTYPE html> |
| <meta charset=utf-8> |
| <title>convertToBlob, OffscreenCanvas: origin-clean flag</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context"> |
| <script> |
| const crossOriginImageUrl = "http://{{domains[www1]}}:{{ports[http][0]}}/images/red.png"; |
| |
| async_test(t => { |
| var img = new Image(); |
| // Use a cross-origin URL. |
| img.src = crossOriginImageUrl; |
| |
| img.onload = t.step_func(e => { |
| createImageBitmap(img, 0, 0, img.width, img.height) |
| .then(t.step_func(bitmap => { |
| var canvasBitmap = new OffscreenCanvas(img.width,img.height); |
| var contextBitmap = canvasBitmap.getContext("bitmaprenderer"); |
| contextBitmap.transferFromImageBitmap(bitmap); |
| promise_rejects(t, |
| new DOMException( |
| 'convertToBlob on a tainted OffscreenCanvas has to throw', |
| 'SecurityError'), |
| canvasBitmap.convertToBlob(), |
| "convertToBlob on a tainted OffscreenCanvas has to throw").then(t.step_func_done()); |
| })); |
| }); |
| }, "Test that call convertToBlob on a tainted OffscreenCanvas throws exception"); |
| </script> |
