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diff --git a/tests/wpt/web-platform-tests b/tests/wpt/web-platform-tests
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-Subproject 29dfb8944e535d439ca94cf7d1b1d9138a8ad11
diff --git a/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/async_002.htm b/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/async_002.htm
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+++ b/tests/wpt/web-platform-tests/html/semantics/scripting-1/the-script-element/async_002.htm
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<html>
+    <head>
+        <title>Changes to the 'async' attribute are reflected in the async property</title>
+        <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+        <meta description="This test ensures changes to the 'async' attribute are reflected in the async property." />
+        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
+        <link rel="help" href="https://html.spec.whatwg.org/multipage/#dom-script-async"/>
+        <script src="/resources/testharness.js"></script>
+        <script src="/resources/testharnessreport.js"></script>
+    </head>
+    <body>
+        <div id=log></div>
+        <script type="text/javascript">
+          test(function() {
+            var s = document.createElement("script");
+            s.async = false;
+            s.setAttribute('async', ''); /*Should change s.async to true*/
+            assert_true(s.async)
+          }, "Test 'async' attribute are reflected in the async property with setAttribute");
+
+          test(function() {
+            var s = document.createElement("script");
+            s.async = false;
+            s.setAttribute('async', ''); /*Should change s.async to true*/
+            s.removeAttribute('async'); /*Should change s.async to false*/
+            assert_false(s.async)
+          }, "Test 'async' attribute are reflected in the async property with removeAttribute");
+        </script>
+    </body>
+</html>