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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/manual/draw-element-image/privacy/background-image-in-iframe-ignored.tentative.https.sub.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<html>
<head>
<title>drawElementImage does not draw cross-origin background images</title>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<script src='/html/canvas/resources/canvas-tests.js'></script>
<script src="/html/canvas/resources/wait-for-canvas-paint.js"></script>
</head>
<body>
<iframe id="iframe" src="support/subframe-cross-origin-background-image.https.sub.html"></iframe>
<canvas id="canvas" width="300" height="150" layoutsubtree>
<div id="child"></div>
</canvas>
<script>
window.onload = () => {
promise_test(async function(t) {
await waitForCanvasPaint(canvas);
// Atomically move the iframe into the canvas.
child.moveBefore(iframe, null);
await waitForCanvasPaint(canvas);
const context = canvas.getContext("2d");
context.drawElementImage(child, 0, 0);
const imgData = context.getImageData(0, 0, canvas.width, canvas.height);
let pixel = _getPixelFromImageData(imgData, 50, 50);
assert_array_equals(pixel, [0, 128, 0, 255],
"Cross-origin background image in iframe should not draw");
});
};
</script>
</body>
</html>