/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.collections.keyvalue;
import java.util.Arrays;
import junit.framework.Assert;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit tests for {@link org.apache.commons.collections.MultiKey}.
*
* @version $Revision: 646780 $ $Date: 2008-04-10 13:48:07 +0100 (Thu, 10 Apr 2008) $
*
* @author Stephen Colebourne
*/
public class TestMultiKey extends TestCase {
Integer ONE = new Integer(1);
Integer TWO = new Integer(2);
Integer THREE = new Integer(3);
Integer FOUR = new Integer(4);
Integer FIVE = new Integer(5);
public TestMultiKey(String name) {
super(name);
}
public static Test suite() {
return new TestSuite(TestMultiKey.class);
}
public static void main(String[] args) {
String[] testCaseName = { TestMultiKey.class.getName() };
junit.textui.TestRunner.main(testCaseName);
}
public void setUp() throws Exception {
super.setUp();
}
protected void tearDown() throws Exception {
super.tearDown();
}
//-----------------------------------------------------------------------
public void testConstructors() throws Exception {
MultiKey mk = null;
mk = new MultiKey(ONE, TWO);
Assert.assertTrue(Arrays.equals(new Object[] {ONE, TWO}, mk.getKeys()));
mk = new MultiKey(ONE, TWO, THREE);
Assert.assertTrue(Arrays.equals(new Object[] {ONE, TWO, THREE}, mk.getKeys()));
mk = new MultiKey(ONE, TWO, THREE, FOUR);
Assert.assertTrue(Arrays.equals(new Object[] {ONE, TWO, THREE, FOUR}, mk.getKeys()));
mk = new MultiKey(ONE, TWO, THREE, FOUR, FIVE);
Assert.assertTrue(Arrays.equals(new Object[] {ONE, TWO, THREE, FOUR, FIVE}, mk.getKeys()));
mk = new MultiKey(new Object[] {THREE, FOUR, ONE, TWO}, false);
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
}
public void testConstructorsByArray() throws Exception {
MultiKey mk = null;
Object[] keys = new Object[] {THREE, FOUR, ONE, TWO};
mk = new MultiKey(keys);
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
keys[3] = FIVE; // no effect
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
keys = new Object[] {};
mk = new MultiKey(keys);
Assert.assertTrue(Arrays.equals(new Object[] {}, mk.getKeys()));
keys = new Object[] {THREE, FOUR, ONE, TWO};
mk = new MultiKey(keys, true);
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
keys[3] = FIVE; // no effect
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
keys = new Object[] {THREE, FOUR, ONE, TWO};
mk = new MultiKey(keys, false);
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, TWO}, mk.getKeys()));
// change key - don't do this!
// the hashcode of the MultiKey is now broken
keys[3] = FIVE;
Assert.assertTrue(Arrays.equals(new Object[] {THREE, FOUR, ONE, FIVE}, mk.getKeys()));
}
public void testConstructorsByArrayNull() throws Exception {
Object[] keys = null;
try {
new MultiKey(keys);
fail();
} catch (IllegalArgumentException ex) {}
try {
new MultiKey(keys, true);
fail();
} catch (IllegalArgumentException ex) {}
try {
new MultiKey(keys, false);
fail();
} catch (IllegalArgumentException ex) {}
}
public void testSize() {
Assert.assertEquals(2, new MultiKey(ONE, TWO).size());
Assert.assertEquals(2, new MultiKey(null, null).size());
Assert.assertEquals(3, new MultiKey(ONE, TWO, THREE).size());
Assert.assertEquals(3, new MultiKey(null, null, null).size());
Assert.assertEquals(4, new MultiKey(ONE, TWO, THREE, FOUR).size());
Assert.assertEquals(4, new MultiKey(null, null, null, null).size());
Assert.assertEquals(5, new MultiKey(ONE, TWO, THREE, FOUR, FIVE).size());
Assert.assertEquals(5, new MultiKey(null, null, null, null, null).size());
Assert.assertEquals(0, new MultiKey(new Object[] {}).size());
Assert.assertEquals(1, new MultiKey(new Object[] {ONE}).size());
Assert.assertEquals(2, new MultiKey(new Object[] {ONE, TWO}).size());
Assert.assertEquals(7, new MultiKey(new Object[] {ONE, TWO, ONE, TWO, ONE, TWO, ONE}).size());
}
public void testGetIndexed() {
MultiKey mk = new MultiKey(ONE, TWO);
Assert.assertSame(ONE, mk.getKey(0));
Assert.assertSame(TWO, mk.getKey(1));
try {
mk.getKey(-1);
fail();
} catch (IndexOutOfBoundsException ex) {}
try {
mk.getKey(2);
fail();
} catch (IndexOutOfBoundsException ex) {}
}
public void testGetKeysSimpleConstructor() {
MultiKey mk = new MultiKey(ONE, TWO);
Object[] array = mk.getKeys();
Assert.assertSame(ONE, array[0]);
Assert.assertSame(TWO, array[1]);
Assert.assertEquals(2, array.length);
}
public void testGetKeysArrayConstructorCloned() {
Object[] keys = new Object[] {ONE, TWO};
MultiKey mk = new MultiKey(keys, true);
Object[] array = mk.getKeys();
Assert.assertTrue(array != keys);
Assert.assertTrue(Arrays.equals(array, keys));
Assert.assertSame(ONE, array[0]);
Assert.assertSame(TWO, array[1]);
Assert.assertEquals(2, array.length);
}
public void testGetKeysArrayConstructorNonCloned() {
Object[] keys = new Object[] {ONE, TWO};
MultiKey mk = new MultiKey(keys, false);
Object[] array = mk.getKeys();
Assert.assertTrue(array != keys); // still not equal
Assert.assertTrue(Arrays.equals(array, keys));
Assert.assertSame(ONE, array[0]);
Assert.assertSame(TWO, array[1]);
Assert.assertEquals(2, array.length);
}
public void testHashCode() {
MultiKey mk1 = new MultiKey(ONE, TWO);
MultiKey mk2 = new MultiKey(ONE, TWO);
MultiKey mk3 = new MultiKey(ONE, "TWO");
Assert.assertTrue(mk1.hashCode() == mk1.hashCode());
Assert.assertTrue(mk1.hashCode() == mk2.hashCode());
Assert.assertTrue(mk1.hashCode() != mk3.hashCode());
int total = (0 ^ ONE.hashCode()) ^ TWO.hashCode();
Assert.assertEquals(total, mk1.hashCode());
}
public void testEquals() {
MultiKey mk1 = new MultiKey(ONE, TWO);
MultiKey mk2 = new MultiKey(ONE, TWO);
MultiKey mk3 = new MultiKey(ONE, "TWO");
Assert.assertEquals(mk1, mk1);
Assert.assertEquals(mk1, mk2);
Assert.assertTrue(mk1.equals(mk3) == false);
Assert.assertTrue(mk1.equals("") == false);
Assert.assertTrue(mk1.equals(null) == false);
}
}