/*
* $Id$
*
* Copyright 2006, The jCoderZ.org Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
* * Neither the name of the jCoderZ.org Project nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jcoderz.commons.util;
import junit.framework.TestCase;
/**
* JUnit test for the class {@link org.jcoderz.commons.util.HashCodeUtil}.
*
* @author Michael Griffel
*/
public class HashCodeUtilTest
extends TestCase
{
private static final double DOUBLE_TEST_3 = -1.1d;
private static final double DOUBLE_TEST_2 = 0.0d;
private static final double DOUBLE_TEST_1 = 1.1d;
private static final double FLOAT_TEST_3 = -1.1;
private static final double FLOAT_TEST_2 = 0.0;
private static final double FLOAT_TEST_1 = 1.1;
/**
* Test the method {@link HashCodeUtil#hash}.
*/
public void testHashCode ()
{
final int hashCode = HashCodeUtil.SEED;
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, true));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, false));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, 1));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, 0));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, -1));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, 1L));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, 0L));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, -1L));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, 'c'));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, null));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, "foo"));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, ""));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, FLOAT_TEST_1));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, FLOAT_TEST_2));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, FLOAT_TEST_3));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, DOUBLE_TEST_1));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, DOUBLE_TEST_2));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, DOUBLE_TEST_3));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode, new Object[]{}));
assertNotEquals(hashCode, HashCodeUtil.hash(hashCode,
new Object[]{"foo", "bar"}));
}
/**
* Asserts that the expected value is equals the current value.
* @param expectedValue expected value
* @param currentValue current value
*/
private void assertNotEquals (int expectedValue, int currentValue)
{
assertFalse("hashcode should be changed, but is equals " + expectedValue,
expectedValue == currentValue);
}
}