--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/nashorn/script/basic/JDK-8022731.js	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8022731: NativeArguments has wrong implementation of isMapped()
+ *
+ * @test
+ * @run
+ */
+
+Object.defineProperty(Object.prototype, "0", {value: "proto"});
+
+function test0(a, b) {
+    Object.defineProperty(arguments, "1", {get: function() { return "get" }});
+    return arguments[0];
+}
+
+function test1(a, b) {
+    Object.defineProperty(arguments, "0", {get: function() { return "get" }});
+    return a;
+}
+
+function test2(a, b) {
+    Object.defineProperty(arguments, "0", {value: "value"});
+    delete arguments[0];
+    return a;
+}
+
+function test3(a, b) {
+    arguments[1] = "arg1";
+    return b;
+}
+
+function test4(a, b) {
+    b = "b";
+    return arguments[1];
+}
+
+function test5(a, b) {
+    Object.defineProperty(arguments, "0", {value: "value"});
+    arguments[0] = "new";
+    return a;
+}
+
+function test6(a, b) {
+    Object.defineProperty(arguments, "0", {value: "value"});
+    arguments[0] = "new";
+    delete arguments[0];
+    return a;
+}
+
+function test7(a, b) {
+    Object.defineProperty(arguments, "0", {value: "value", writable: false});
+    arguments[0] = "new";
+    return a;
+}
+
+print(test0());
+print(test0("p1", "p2"));
+print(test1());
+print(test1("p1"));
+print(test2());
+print(test2("p1"));
+print(test3());
+print(test3(1, 2));
+print(test4());
+print(test4("p1", "p2"));
+print(test5());
+print(test5("p1"));
+print(test6());
+print(test6("p1"));
+print(test7());
+print(test7("p1"));