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/*
* Copyright (c) 1997, 1998, 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.
*/
/* @test
@bug 4093817 4189594
@summary Test for an illegalargumentexception on loadFactor
*/
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;
/**
* This class tests to see if creating a hash table with an
* illegal value of loadFactor results in an IllegalArgumentException
*/
public class IllegalLoadFactor {
public static void main(String[] args) throws Exception {
boolean testSucceeded = false;
try {
// this should generate an IllegalArgumentException
Hashtable bad1 = new Hashtable(100, -3);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("Hashtable, negative load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
Hashtable bad1 = new Hashtable(100, Float.NaN);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("Hashtable, NaN load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
HashMap bad1 = new HashMap(100, -3);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("HashMap, negative load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
HashMap bad1 = new HashMap(100, Float.NaN);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("HashMap, NaN load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
HashSet bad1 = new HashSet(100, -3);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("HashSet, negative load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
HashSet bad1 = new HashSet(100, Float.NaN);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("HashSet, NaN load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
WeakHashMap bad1 = new WeakHashMap(100, -3);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("WeakHashMap, negative load factor");
testSucceeded = false;
try {
// this should generate an IllegalArgumentException
WeakHashMap bad1 = new WeakHashMap(100, Float.NaN);
}
catch (IllegalArgumentException e1) {
testSucceeded = true;
}
if (!testSucceeded)
throw new Exception("WeakHashMap, NaN load factor");
// Make sure that legal creates don't throw exceptions
Map goodMap = new Hashtable(100, .69f);
goodMap = new HashMap(100, .69f);
Set goodSet = new HashSet(100, .69f);
goodMap = new WeakHashMap(100, .69f);
}
}
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