--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/nashorn/script/basic/sealfreeze.js	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+/**
+ * Basic checks for Object.seal and Object.freeze.
+ *
+ * @test
+ * @run
+ */
+
+var obj = { num: Math.E };
+
+print("sealed? " + Object.isSealed(obj));
+print("frozen? " + Object.isFrozen(obj));
+
+Object.seal(obj);
+print("sealed? " + Object.isSealed(obj));
+
+// delete should fail - because we have sealed
+print("deleted num? " + (delete obj.num));
+print("num = " + obj.num);
+
+// assignment should succeed
+print("assign PI to num");
+obj.num = Math.PI;
+print("num = " + obj.num);
+
+// assignment should fail -- because we freeze
+Object.freeze(obj);
+print("frozen? " + Object.isFrozen(obj));
+
+print("assign 1729 to num");
+obj.num = 1729;
+print("num = " + obj.num);
+