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diff --git a/testing/web-platform/tests/2dcontext/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html b/testing/web-platform/tests/2dcontext/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
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index 000000000..2dce28b66
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+++ b/testing/web-platform/tests/2dcontext/fill-and-stroke-styles/2d.gradient.object.invalidoffset.html
@@ -0,0 +1,32 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>Canvas test: 2d.gradient.object.invalidoffset</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.gradient.object.invalidoffset</h1>
+<p class="desc"></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("");
+_addTest(function(canvas, ctx) {
+
+var g = ctx.createLinearGradient(0, 0, 100, 0);
+assert_throws("INDEX_SIZE_ERR", function() { g.addColorStop(-1, '#000'); });
+assert_throws("INDEX_SIZE_ERR", function() { g.addColorStop(2, '#000'); });
+assert_throws(new TypeError(), function() { g.addColorStop(Infinity, '#000'); });
+assert_throws(new TypeError(), function() { g.addColorStop(-Infinity, '#000'); });
+assert_throws(new TypeError(), function() { g.addColorStop(NaN, '#000'); });
+
+
+});
+</script>
+