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Commons Beanutils example source code file (BeanComparatorTestCase.java)
The Commons Beanutils BeanComparatorTestCase.java source code/* * 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 * @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); } } } Other Commons Beanutils examples (source code examples)Here is a short list of links related to this Commons Beanutils BeanComparatorTestCase.java source code file: |
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