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diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html
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+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.object.return.html
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+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.gradient.object.return</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.gradient.object.return</h1>
+<p class="desc">createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient</p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("createLinearGradient() and createRadialGradient() returns objects implementing CanvasGradient");
+_addTest(function(canvas, ctx) {
+
+  window.CanvasGradient.prototype.thisImplementsCanvasGradient = true;
+
+  var g1 = ctx.createLinearGradient(0, 0, 100, 0);
+  _assertDifferent(g1.addColorStop, undefined, "g1.addColorStop", "undefined");
+  _assertSame(g1.thisImplementsCanvasGradient, true, "g1.thisImplementsCanvasGradient", "true");
+
+  var g2 = ctx.createRadialGradient(0, 0, 10, 0, 0, 20);
+  _assertDifferent(g2.addColorStop, undefined, "g2.addColorStop", "undefined");
+  _assertSame(g2.thisImplementsCanvasGradient, true, "g2.thisImplementsCanvasGradient", "true");
+
+});
+</script>
+