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diff --git a/testing/web-platform/tests/2dcontext/path-objects/2d.path.arcTo.negative.html b/testing/web-platform/tests/2dcontext/path-objects/2d.path.arcTo.negative.html
new file mode 100644
index 000000000..5aa7baa4c
--- /dev/null
+++ b/testing/web-platform/tests/2dcontext/path-objects/2d.path.arcTo.negative.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>Canvas test: 2d.path.arcTo.negative</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.path.arcTo.negative</h1>
+<p class="desc">arcTo() with negative radius throws an exception</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("arcTo() with negative radius throws an exception");
+_addTest(function(canvas, ctx) {
+
+assert_throws("INDEX_SIZE_ERR", function() { ctx.arcTo(0, 0, 0, 0, -1); });
+
+
+});
+</script>
+