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| 1 <!DOCTYPE html> |
| 2 <title>Block reading offscreen canvas via StrictCanvasTainting setting</title> |
| 3 <script src="/resources/testharness.js"></script> |
| 4 <script src="/resources/testharnessreport.js"></script> |
| 5 <script> |
| 6 if (window.testRunner) |
| 7 testRunner.overridePreference("WebKitDisableReadingFromCanvas", true); |
| 8 |
| 9 var image = new Image(); |
| 10 var offCanvas = new OffscreenCanvas(100, 100); |
| 11 var context = offCanvas.getContext('2d'); |
| 12 |
| 13 test(function () { |
| 14 assert_throws( |
| 15 "SecurityError", |
| 16 function() { |
| 17 var imageData = context.getImageData(0, 0, 100, 100); |
| 18 assert_unreached('getImageData should throw'); |
| 19 }); |
| 20 }, 'getImageData'); |
| 21 |
| 22 test(function () { |
| 23 assert_throws( |
| 24 "SecurityError", |
| 25 function() { |
| 26 context.drawImage(image, 0, 0, 100, 100); |
| 27 var imageData = context.getImageData(0, 0, 100, 100); |
| 28 assert_unreached('getImageData should throw'); |
| 29 }); |
| 30 }, 'getImageData'); |
| 31 |
| 32 </script> |
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