jdk/test/java/util/Hashtable/IllegalLoadFactor.java
author xdono
Thu, 18 Dec 2008 21:34:08 -0800
changeset 1749 ff917d84bdf3
parent 2 90ce3da70b43
child 5506 202f599c92aa
permissions -rw-r--r--
Added tag jdk7-b42 for changeset 180d45acc127
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/*
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 * Copyright 1997-1998 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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/* @test
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   @bug 4093817 4189594
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   @summary Test for an illegalargumentexception on loadFactor
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*/
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import java.util.*;
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/**
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 * This class tests to see if creating a hash table with an
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 * illegal value of loadFactor results in an IllegalArgumentException
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 */
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public class IllegalLoadFactor {
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      public static void main(String argv[]) throws Exception {
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          boolean testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              Hashtable bad1 = new Hashtable(100, -3);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("Hashtable, negative load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              Hashtable bad1 = new Hashtable(100, Float.NaN);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("Hashtable, NaN load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              HashMap bad1 = new HashMap(100, -3);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("HashMap, negative load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              HashMap bad1 = new HashMap(100, Float.NaN);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("HashMap, NaN load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              HashSet bad1 = new HashSet(100, -3);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("HashSet, negative load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              HashSet bad1 = new HashSet(100, Float.NaN);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("HashSet, NaN load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              WeakHashMap bad1 = new WeakHashMap(100, -3);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("WeakHashMap, negative load factor");
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          testSucceeded = false;
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          try{
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              // this should generate an IllegalArgumentException
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              WeakHashMap bad1 = new WeakHashMap(100, Float.NaN);
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          }
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          catch (IllegalArgumentException e1) {
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              testSucceeded = true;
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          }
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          if(!testSucceeded)
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              throw new Exception("WeakHashMap, NaN load factor");
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          // Make sure that legal creates don't throw exceptions
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          Map goodMap = new Hashtable(100, .69f);
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          goodMap = new HashMap(100, .69f);
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          Set goodSet = new HashSet(100, .69f);
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          goodMap = new WeakHashMap(100, .69f);
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     }
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}