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diff --git a/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.html
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+++ b/testing/web-platform/tests/html/canvas/element/fill-and-stroke-styles/2d.gradient.conic.invalid.inputs.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.conic.invalid.inputs</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.conic.invalid.inputs</h1>
+<p class="desc">Conic gradient function with invalid inputs</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("Conic gradient function with invalid inputs");
+_addTest(function(canvas, ctx) {
+
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(-Infinity, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(NaN, 0, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, Infinity, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, -Infinity, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, NaN, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, -Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, 0, NaN); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, Infinity, 1); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, Infinity, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(Infinity, 0, Infinity); });
+  assert_throws_js(TypeError, function() { ctx.createConicGradient(0, Infinity, Infinity); });
+
+  const g = ctx.createConicGradient(0, 0, 25);
+  assert_throws_js(TypeError, function() { g.addColorStop(-Infinity, '#f00'); });
+  assert_throws_js(TypeError, function() { g.addColorStop(NaN, '#f00'); });
+  assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, -Infinity); });
+  assert_throws_dom("SYNTAX_ERR", function() { g.addColorStop(0, NaN); });
+
+});
+</script>
+