/* | |
* 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.beanutils2; | |
import junit.framework.Test; | |
import junit.framework.TestCase; | |
import junit.framework.TestSuite; | |
/** | |
* Test Case for the BeanComparator class. | |
*/ | |
public class BeanComparatorTestCase extends TestCase { | |
/** | |
* The test beans for each test. | |
*/ | |
protected TestBean bean = null; | |
protected AlphaBean alphaBean1 = null; | |
protected AlphaBean alphaBean2 = null; | |
/** | |
* Constructs a new instance of this test case. | |
* | |
* @param name Name of the test case | |
*/ | |
public BeanComparatorTestCase(final String name) { | |
super(name); | |
} | |
/** | |
* Sets up instance variables required by this test case. | |
*/ | |
@Override | |
public void setUp() { | |
bean = new TestBean(); | |
alphaBean1 = new AlphaBean("alphaBean1"); | |
alphaBean2 = new AlphaBean("alphaBean2"); | |
} | |
/** | |
* Returns the tests included in this test suite. | |
*/ | |
public static Test suite() { | |
return new TestSuite(BeanComparatorTestCase.class); | |
} | |
/** | |
* Tears down instance variables required by this test case. | |
*/ | |
@Override | |
public void tearDown() { | |
bean = null; | |
alphaBean1 = null; | |
alphaBean2 = null; | |
} | |
/** | |
* Tests comparing two beans via their name using the default Comparator | |
*/ | |
public void testSimpleCompare() { | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>( | |
"name"); | |
final int result = beanComparator.compare(alphaBean1, alphaBean2); | |
assertTrue("Comparator did not sort properly. Result:" + result, | |
result == -1); | |
} | |
/** | |
* Tests comparing two beans via their name using the default Comparator, but the inverse | |
*/ | |
public void testSimpleCompareInverse() { | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>( | |
"name"); | |
final int result = beanComparator.compare(alphaBean2, alphaBean1); | |
assertTrue("Comparator did not sort properly. Result:" + result, | |
result == 1); | |
} | |
/** | |
* Tests comparing two beans via their name using the default Comparator where they have the same value. | |
*/ | |
public void testCompareIdentical() { | |
alphaBean1 = new AlphaBean("alphabean"); | |
alphaBean2 = new AlphaBean("alphabean"); | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>( | |
"name"); | |
final int result = beanComparator.compare(alphaBean1, alphaBean2); | |
assertTrue("Comparator did not sort properly. Result:" + result, | |
result == 0); | |
} | |
/** | |
* Tests comparing one bean against itself. | |
*/ | |
public void testCompareBeanAgainstSelf() { | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>( | |
"name"); | |
final int result = beanComparator.compare(alphaBean1, alphaBean1); | |
assertTrue("Comparator did not sort properly. Result:" + result, | |
result == 0); | |
} | |
/** | |
* Tests comparing two beans via their name using the default Comparator, but with one of the beans | |
* being null. | |
*/ | |
public void testCompareWithNulls() { | |
try { | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>("name"); | |
beanComparator.compare(alphaBean2, null); | |
fail("Should not be able to compare a null value."); | |
} | |
catch (final Exception e) { | |
// expected result | |
} | |
} | |
/** | |
* Tests comparing two beans who don't have a property | |
*/ | |
public void testCompareOnMissingProperty() { | |
try { | |
final BeanComparator<AlphaBean, String> beanComparator = new BeanComparator<>("bogusName"); | |
beanComparator.compare(alphaBean2, alphaBean1); | |
fail("should not be able to compare"); | |
} | |
catch (final Exception e) { | |
assertTrue("Wrong exception was thrown: " + e, e.toString().contains("Unknown property")); | |
} | |
} | |
/** | |
* Tests comparing two beans on a boolean property, which is not possible. | |
*/ | |
public void testCompareOnBooleanProperty() { | |
try { | |
final TestBean testBeanA = new TestBean(); | |
final TestBean testBeanB = new TestBean(); | |
testBeanA.setBooleanProperty(true); | |
testBeanB.setBooleanProperty(false); | |
final BeanComparator<TestBean, String> 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 (final ClassCastException cce){ | |
// Expected result | |
} | |
} | |
/** | |
* Tests comparing two beans on a boolean property, then changing the property and testing/ | |
*/ | |
public void testSetProperty() { | |
final TestBean testBeanA = new TestBean(); | |
final TestBean testBeanB = new TestBean(); | |
testBeanA.setDoubleProperty(5.5); | |
testBeanB.setDoubleProperty(1.0); | |
final BeanComparator<TestBean, String> 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); | |
} | |
} |