63 lines
2.1 KiB
JavaScript
63 lines
2.1 KiB
JavaScript
/*
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* Copyright (c) 2015, 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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* JDK-8141407: Wrong evaluation of a != a when a = NaN
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*
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* @test
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* @run
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*/
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function expectNotEqualToSelf(a) {
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Assert.assertFalse(a == a);
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Assert.assertFalse(a === a);
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Assert.assertTrue(a != a);
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Assert.assertTrue(a !== a);
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}
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// In previous versions of Nashorn this failed only on the second assignment,
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// because only then the property slot was widened to object.
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var a = NaN;
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expectNotEqualToSelf(a);
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a = {};
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a = NaN;
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expectNotEqualToSelf(a);
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// We do have to do value-based rather than reference-based comparison for
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// java.lang.Double since that class is used to represent primitive numbers
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// in JavaScript.
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var b = new java.lang.Double(NaN);
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expectNotEqualToSelf(b);
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b = {};
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b = new java.lang.Double(NaN);
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expectNotEqualToSelf(b);
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// Although float is not used internally by Nashorn, java.lang.Float
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// is handled like a primitive number in most of Nashorn, so for consistency
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// we treat it like java.lang.Double.
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var c = new java.lang.Float(NaN);
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expectNotEqualToSelf(c);
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c = {};
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c = new java.lang.Float(NaN);
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expectNotEqualToSelf(c);
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