56 lines
1.7 KiB
JavaScript
56 lines
1.7 KiB
JavaScript
/*
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* Basic checks for Object.seal and Object.freeze.
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*
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* @test
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* @run
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*/
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var obj = { num: Math.E };
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print("sealed? " + Object.isSealed(obj));
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print("frozen? " + Object.isFrozen(obj));
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Object.seal(obj);
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print("sealed? " + Object.isSealed(obj));
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// delete should fail - because we have sealed
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print("deleted num? " + (delete obj.num));
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print("num = " + obj.num);
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// assignment should succeed
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print("assign PI to num");
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obj.num = Math.PI;
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print("num = " + obj.num);
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// assignment should fail -- because we freeze
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Object.freeze(obj);
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print("frozen? " + Object.isFrozen(obj));
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print("assign 1729 to num");
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obj.num = 1729;
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print("num = " + obj.num);
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