/*
* 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.beanutils;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* <p>
* Test Case for the BeanComparator class.
*
* @author <a href="mailto:epugh@upstate.com">Eric Pugh</a>
* @version $Revision: 745074 $
*/
public class BeanComparatorTestCase extends TestCase {
// ---------------------------------------------------- Instance Variables
/**
* The test beans for each test.
*/
protected TestBean bean = null;
protected AlphaBean alphaBean1 = null;
protected AlphaBean alphaBean2 = null;
// The test BeanComparator
protected BeanComparator beanComparator = null;
// ---------------------------------------------------------- Constructors
/**
* Construct a new instance of this test case.
*
* @param name Name of the test case
*/
public BeanComparatorTestCase(String name) {
super(name);
}
// -------------------------------------------------- Overall Test Methods
/**
* Set up instance variables required by this test case.
*/
public void setUp() {
bean = new TestBean();
alphaBean1 = new AlphaBean("alphaBean1");
alphaBean2 = new AlphaBean("alphaBean2");
}
/**
* Return the tests included in this test suite.
*/
public static Test suite() {
return (new TestSuite(BeanComparatorTestCase.class));
}
/**
* Tear down instance variables required by this test case.
*/
public void tearDown() {
bean = null;
alphaBean1 = null;
alphaBean2 = null;
beanComparator = null;
}
// ------------------------------------------------ Individual Test Methods
/**
* tests comparing two beans via their name using the default Comparator
*/
public void testSimpleCompare() {
try {
beanComparator = new BeanComparator("name");
int result = beanComparator.compare(alphaBean1, alphaBean2);
assertTrue("Comparator did not sort properly. Result:" + result,result==-1);
}
catch (Exception e) {
fail("Exception");
}
}
/**
* tests comparing two beans via their name using the default Comparator, but the inverse
*/
public void testSimpleCompareInverse() {
try {
beanComparator = new BeanComparator("name");
int result = beanComparator.compare(alphaBean2, alphaBean1);
assertTrue("Comparator did not sort properly. Result:" + result,result==1);
}
catch (Exception e) {
fail("Exception" + e);
}
}
/**
* tests comparing two beans via their name using the default Comparator where they have the same value.
*/
public void testCompareIdentical() {
try {
alphaBean1 = new AlphaBean("alphabean");
alphaBean2 = new AlphaBean("alphabean");
beanComparator = new BeanComparator("name");
int result = beanComparator.compare(alphaBean1, alphaBean2);
assertTrue("Comparator did not sort properly. Result:" + result,result==0);
}
catch (Exception e) {
fail("Exception");
}
}
/**
* tests comparing one bean against itself.
*/
public void testCompareBeanAgainstSelf() {
try {
beanComparator = new BeanComparator("name");
int result = beanComparator.compare(alphaBean1, alphaBean1);
assertTrue("Comparator did not sort properly. Result:" + result,result==0);
}
catch (Exception e) {
fail("Exception");
}
}
/**
* tests comparing two beans via their name using the default Comparator, but with one of the beans
* being null.
*/
public void testCompareWithNulls() {
try {
beanComparator = new BeanComparator("name");
beanComparator.compare(alphaBean2, null);
// DEP not sure if this is the best way to test an exception?
fail("Should not be able to compare a null value.");
}
catch (Exception e) {
}
}
/**
* tests comparing two beans who don't have a property
*/
public void testCompareOnMissingProperty() {
try {
beanComparator = new BeanComparator("bogusName");
beanComparator.compare(alphaBean2, alphaBean1);
fail("should not be able to compare");
}
catch (Exception e) {
assertTrue("Wrong exception was thrown: " + e, e.toString().indexOf("Unknown property") > -1);
}
}
/**
* tests comparing two beans on a boolean property, which is not possible.
*/
public void testCompareOnBooleanProperty() {
try {
TestBean testBeanA = new TestBean();
TestBean testBeanB = new TestBean();
testBeanA.setBooleanProperty(true);
testBeanB.setBooleanProperty(false);
beanComparator = new BeanComparator("booleanProperty");
beanComparator.compare(testBeanA, testBeanB);
// **** java.lang.Boolean implements Comparable from JDK 1.5 onwards
// so this test no longer fails
// fail("BeanComparator should throw an exception when comparing two booleans.");
}
catch (ClassCastException cce){
// Expected result
}
catch (Exception e) {
fail("Exception" + e);
}
}
/**
* tests comparing two beans on a boolean property, then changing the property and testing
*/
public void testSetProperty() {
try {
TestBean testBeanA = new TestBean();
TestBean testBeanB = new TestBean();
testBeanA.setDoubleProperty(5.5);
testBeanB.setDoubleProperty(1.0);
beanComparator = new BeanComparator("doubleProperty");
int result = beanComparator.compare(testBeanA, testBeanB);
assertTrue("Comparator did not sort properly. Result:" + result,result==1);
testBeanA.setStringProperty("string 1");
testBeanB.setStringProperty("string 2");
beanComparator.setProperty("stringProperty");
result = beanComparator.compare(testBeanA, testBeanB);
assertTrue("Comparator did not sort properly. Result:" + result,result==-1);
}
catch (ClassCastException cce){
fail("ClassCaseException " + cce.toString());
}
catch (Exception e) {
fail("Exception" + e);
}
}
}