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diff --git a/testing/web-platform/tests/2dcontext/shadows/2d.shadow.composite.3.html b/testing/web-platform/tests/2dcontext/shadows/2d.shadow.composite.3.html
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index 000000000..feee1ce5e
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+++ b/testing/web-platform/tests/2dcontext/shadows/2d.shadow.composite.3.html
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+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>Canvas test: 2d.shadow.composite.3</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+<link rel="stylesheet" href="/common/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.shadow.composite.3</h1>
+<p class="desc">Areas outside shadows are drawn correctly with destination-out</p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+<p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
+<ul id="d"></ul>
+<script>
+var t = async_test("Areas outside shadows are drawn correctly with destination-out");
+_addTest(function(canvas, ctx) {
+
+ctx.fillStyle = '#0f0';
+ctx.fillRect(0, 0, 100, 50);
+ctx.globalCompositeOperation = 'destination-out';
+ctx.shadowColor = '#f00';
+ctx.shadowBlur = 10;
+ctx.fillStyle = '#f00';
+ctx.fillRect(200, 0, 100, 50);
+
+_assertPixelApprox(canvas, 5,5, 0,255,0,255, "5,5", "0,255,0,255", 2);
+_assertPixelApprox(canvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255", 2);
+
+
+});
+</script>
+