toBlob-origin-clean-offscreen.sub.html (1125B)
1 <!DOCTYPE html> 2 <meta charset=utf-8> 3 <title>convertToBlob, OffscreenCanvas: origin-clean flag</title> 4 <script src="/resources/testharness.js"></script> 5 <script src="/resources/testharnessreport.js"></script> 6 <link rel="help" href="https://html.spec.whatwg.org/multipage/scripting.html#the-imagebitmap-rendering-context"> 7 <script> 8 const crossOriginImageUrl = "http://{{domains[www1]}}:{{ports[http][0]}}/images/red.png"; 9 10 async_test(t => { 11 var img = new Image(); 12 // Use a cross-origin URL. 13 img.src = crossOriginImageUrl; 14 15 img.onload = t.step_func(e => { 16 createImageBitmap(img, 0, 0, img.width, img.height) 17 .then(t.step_func(bitmap => { 18 var canvasBitmap = new OffscreenCanvas(img.width,img.height); 19 var contextBitmap = canvasBitmap.getContext("bitmaprenderer"); 20 contextBitmap.transferFromImageBitmap(bitmap); 21 promise_rejects_dom(t, 'SecurityError', 22 canvasBitmap.convertToBlob(), 23 "convertToBlob on a tainted OffscreenCanvas has to throw").then(t.step_func_done()); 24 })); 25 }); 26 }, "Test that call convertToBlob on a tainted OffscreenCanvas throws exception"); 27 </script>