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diff --git a/testing/web-platform/tests/html/canvas/element/canvas-context/2d.canvas.context.type.prototype.html b/testing/web-platform/tests/html/canvas/element/canvas-context/2d.canvas.context.type.prototype.html
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+++ b/testing/web-platform/tests/html/canvas/element/canvas-context/2d.canvas.context.type.prototype.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.canvas.context.type.prototype</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.canvas.context.type.prototype</h1>
+<p class="desc">window.CanvasRenderingContext2D.prototype are not [[Writable]] and not [[Configurable]], and its methods are [[Configurable]].</p>
+
+<p class="notes">Defined in "Web IDL" (draft)
+<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("window.CanvasRenderingContext2D.prototype are not [[Writable]] and not [[Configurable]], and its methods are [[Configurable]].");
+_addTest(function(canvas, ctx) {
+
+  _assert(window.CanvasRenderingContext2D.prototype, "window.CanvasRenderingContext2D.prototype");
+  _assert(window.CanvasRenderingContext2D.prototype.fill, "window.CanvasRenderingContext2D.prototype.fill");
+  window.CanvasRenderingContext2D.prototype = null;
+  _assert(window.CanvasRenderingContext2D.prototype, "window.CanvasRenderingContext2D.prototype");
+  delete window.CanvasRenderingContext2D.prototype;
+  _assert(window.CanvasRenderingContext2D.prototype, "window.CanvasRenderingContext2D.prototype");
+  window.CanvasRenderingContext2D.prototype.fill = 1;
+  _assertSame(window.CanvasRenderingContext2D.prototype.fill, 1, "window.CanvasRenderingContext2D.prototype.fill", "1");
+  delete window.CanvasRenderingContext2D.prototype.fill;
+  _assertSame(window.CanvasRenderingContext2D.prototype.fill, undefined, "window.CanvasRenderingContext2D.prototype.fill", "undefined");
+
+});
+</script>
+