Commons Beanutils example source code file (LazyDynaBeanTestCase.java)

This example Commons Beanutils source code file (LazyDynaBeanTestCase.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Commons Beanutils tags/keywords

array, check, check, first, illegalargumentexception, indexed, indexed, integer, mapped, property, property, reflection, second, util, value, value

The Commons Beanutils LazyDynaBeanTestCase.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 java.util.HashMap;
import java.util.TreeMap;
import java.util.ArrayList;
import java.util.LinkedList;
import java.lang.reflect.InvocationTargetException;
import junit.framework.TestCase;
import junit.framework.Test;
import junit.framework.TestSuite;

/**
 * <p>Test Case for the LazyDynaBean implementation class.

 *
 * @author Niall Pemberton
 */
public class LazyDynaBeanTestCase extends TestCase {

    protected LazyDynaBean  bean      = null;
    protected LazyDynaClass dynaClass = null;
    protected String testProperty     = "myProperty";
    protected String testPropertyA    = "myProperty-A";
    protected String testPropertyB    = "myProperty-B";
    protected String testString1      = "myStringValue-1";
    protected String testString2      = "myStringValue-2";
    protected Integer testInteger1    = new Integer(30);
    protected Integer testInteger2    = new Integer(40);
    protected String testKey          = "myKey";

    // ---------------------------------------------------------- Constructors

    /**
     * Construct a new instance of this test case.
     *
     * @param name Name of the test case
     */
    public LazyDynaBeanTestCase(String name) {
        super(name);
    }

    // -------------------------------------------------- Overall Test Methods

    /**
     * Run thus Test
     */
    public static void main(String[] args) {
        junit.textui.TestRunner.run(suite());
    }

    /**
     * Return the tests included in this test suite.
     */
    public static Test suite() {
        return (new TestSuite(LazyDynaBeanTestCase.class));
    }

    /**
     * Set up instance variables required by this test case.
     */
    public void setUp() throws Exception {
        bean = new LazyDynaBean();
        dynaClass = (LazyDynaClass)bean.getDynaClass();
        dynaClass.setReturnNull(true);
    }

    /**
     * Tear down instance variables required by this test case.
     */
    public void tearDown() {
      bean = null;
    }

    // ------------------------------------------------ Individual Test Methods

    /**
     * Test Getting/Setting a Simple Property
     */
    public void testSimpleProperty() {

        // Check the property & value doesn't exist
        assertNull("Check Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Value is null", bean.get(testProperty));

        // Set a new property - should add new property and set value
        bean.set(testProperty, testInteger1);
        assertEquals("Check First Value is correct", testInteger1, bean.get(testProperty));
        assertEquals("Check Property type is correct", Integer.class, dynaClass.getDynaProperty(testProperty).getType());

        // Set the property again - should set the new value
        bean.set(testProperty, testInteger2);
        assertEquals("Check Second Value is correct", testInteger2, bean.get(testProperty));

        // Set the property again - with a different type, should fail
        try {
            bean.set(testProperty, testString1);
            fail("expected ConversionException trying to set an Integer property to a String");
        } catch (ConversionException expected) {
            // expected result
        }

    }

    /**
     * Test Getting/Setting a 'null' Property
     */
    public void testNullProperty() {

        // Check the property & value doesn't exist
        assertNull("Check Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Value is null", bean.get(testProperty));

        // Set a new property to null
        bean.set(testProperty, null);
        assertNull("Check Value is still null", bean.get(testProperty));

    }

    /**
     * Test Setting a Simple Property when MutableDynaClass is set to restricted
     */
    public void testSimplePropertyRestricted() {

        // Set the MutableDyanClass to 'restricted' (i.e. no new properties cab be added
        dynaClass.setRestricted(true);
        assertTrue("Check MutableDynaClass is restricted", dynaClass.isRestricted());

        // Check the property & value doesn't exist
        assertNull("Check Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Value is null", bean.get(testProperty));

        // Set the property - should fail because property doesn't exist and MutableDynaClass is restricted
        try {
            bean.set(testProperty, testString1);
            fail("expected IllegalArgumentException trying to add new property to restricted DynaClass");
        } catch (IllegalArgumentException expected) {
            // expected result
        }

    }

    /**
     * Test Getting/Setting a 'Mapped' Property - default HashMap property
     */
    public void testMappedPropertyDefault() {

        // Check the property & value doesn't exist
        assertNull("Check Mapped Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Map is null", bean.get(testProperty));
        assertNull("Check Mapped Value is null", bean.get(testProperty, testKey));

        // Set a new mapped property - should add new HashMap property and set the mapped value
        bean.set(testProperty, testKey, testInteger1);
        assertEquals("Check Mapped Property exists", HashMap.class, bean.get(testProperty).getClass());
        assertEquals("Check First Mapped Value is correct(a)", testInteger1, bean.get(testProperty, testKey));
        assertEquals("Check First Mapped Value is correct(b)", testInteger1, ((HashMap)bean.get(testProperty)).get(testKey));

        // Set the property again - should set the new value
        bean.set(testProperty, testKey, testInteger2);
        assertEquals("Check Second Mapped Value is correct(a)", testInteger2, bean.get(testProperty, testKey));
        assertEquals("Check Second Mapped Value is correct(b)", testInteger2, ((HashMap)bean.get(testProperty)).get(testKey));
    }

    /**
     * Test Getting/Setting a 'Mapped' Property - use TreeMap property
     */
    public void testMappedPropertyTreeMap() {

        // Check the property & value doesn't exist
        assertNull("Check Mapped Property doesn't exist", dynaClass.getDynaProperty(testProperty));

        // Add a 'TreeMap' property to the DynaClass
        dynaClass.add(testProperty, TreeMap.class);
        assertTrue("Check Property is mapped", dynaClass.getDynaProperty(testProperty).isMapped());
        assertEquals("Check Property is correct type", TreeMap.class, dynaClass.getDynaProperty(testProperty).getType());
        assertEquals("Check Mapped Property exists", TreeMap.class, bean.get(testProperty).getClass());
//        assertNull("Check mapped property is null", bean.get(testProperty));

        // Set a new mapped property - should instatiate a new TreeMap property and set the mapped value
        bean.set(testProperty, testKey, testInteger1);
        assertEquals("Check Mapped Property exists", TreeMap.class, bean.get(testProperty).getClass());
        assertEquals("Check First Mapped Value is correct(a)", testInteger1, bean.get(testProperty, testKey));
        assertEquals("Check First Mapped Value is correct(b)", testInteger1, ((TreeMap)bean.get(testProperty)).get(testKey));

        // Set the property again - should set the new value
        bean.set(testProperty, testKey, testInteger2);
        assertEquals("Check Second Mapped Value is correct(a)", testInteger2, bean.get(testProperty, testKey));
        assertEquals("Check Second Mapped Value is correct(b)", testInteger2, ((TreeMap)bean.get(testProperty)).get(testKey));
    }

    /**
     * Test Setting a 'Mapped' Property using PropertyUtils
     */
    public void testMappedPropertyUtils() {

        dynaClass.setReturnNull(false);

        // Check the property & value doesn't exist
        assertFalse("Check Mapped Property doesn't exist", dynaClass.isDynaProperty(testProperty));
        assertNull("Check Map is null", bean.get(testProperty));
        assertNull("Check Mapped Value is null", bean.get(testProperty, testKey));

        // Set the mapped property using PropertyUtils
        try {
          PropertyUtils.setProperty(bean, testProperty+"("+testKey+")", testString1);
        }
        catch (NoSuchMethodException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }
        catch (InvocationTargetException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }
        catch (IllegalAccessException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }

        // Check property value correctly set
        assertEquals("Check Mapped Bean Value is correct", testString1, bean.get(testProperty, testKey));

    }

    /**
     * Test Setting a Mapped Property when MutableDynaClass is set to restricted
     */
    public void testMappedPropertyRestricted() {

        // Set the MutableDyanClass to 'restricted' (i.e. no new properties cab be added
        dynaClass.setRestricted(true);
        assertTrue("Check MutableDynaClass is restricted", dynaClass.isRestricted());

        // Check the property & value doesn't exist
        assertNull("Check Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Value is null", bean.get(testProperty));

        // Set the property - should fail because property doesn't exist and MutableDynaClass is restricted
        try {
            bean.set(testProperty, testKey, testInteger1);
            fail("expected IllegalArgumentException trying to add new property to restricted MutableDynaClass");
        } catch (IllegalArgumentException expected) {
            // expected result
        }

    }

    /**
     * Test setting mapped property for type which is not Map
     */
    public void testMappedInvalidType() {
        dynaClass.add(testProperty, String.class);
        assertFalse("Check Property is not mapped", dynaClass.getDynaProperty(testProperty).isMapped());
        try {
            bean.set(testProperty, testKey, testInteger1);
            fail("set(property, key, value) should have thrown IllegalArgumentException");
        } catch (IllegalArgumentException expected) {
            // expected result
        }
    }

    /**
     * Test Getting/Setting an 'Indexed' Property - default ArrayList property
     */
    public void testIndexedPropertyDefault() {

        int index = 3;

        // Check the property & value doesn't exist
        assertNull("Check Indexed Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));
        assertNull("Check Indexed value is null", bean.get(testProperty, index));

        // Set the property, should create new ArrayList and set appropriate indexed value
        bean.set(testProperty, index, testInteger1);
        assertNotNull("Check Indexed Property is not null", bean.get(testProperty));
        assertEquals("Check Indexed Property is correct type", ArrayList.class, bean.get(testProperty).getClass());
        assertEquals("Check First Indexed Value is correct", testInteger1, bean.get(testProperty, index));
        assertEquals("Check First Array length is correct", new Integer(index+1),  new Integer(((ArrayList)bean.get(testProperty)).size()));

        // Set a second indexed value, should automatically grow the ArrayList and set appropriate indexed value
        index = index + 2;
        bean.set(testProperty, index, testString1);
        assertEquals("Check Second Indexed Value is correct", testString1, bean.get(testProperty, index));
        assertEquals("Check Second Array length is correct", new Integer(index+1),  new Integer(((ArrayList)bean.get(testProperty)).size()));
    }

    /**
     * Test Getting/Setting a List 'Indexed' Property - use alternative List (LinkedList)
     */
    public void testIndexedLinkedList() {

        int   index     = 3;

        // Check the property & value doesn't exist
        assertNull("Check Indexed Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));

        // Add a 'LinkedList' property to the DynaClass
        dynaClass.add(testProperty, LinkedList.class);
        assertTrue("Check Property is indexed", dynaClass.getDynaProperty(testProperty).isIndexed());
        assertEquals("Check Property is correct type", LinkedList.class, dynaClass.getDynaProperty(testProperty).getType());
        assertEquals("Check Property type is correct", LinkedList.class, bean.get(testProperty).getClass());

        // Set the property, should instantiate a new LinkedList and set appropriate indexed value
        bean.set(testProperty, index, testString1);
        assertEquals("Check Property type is correct", LinkedList.class, bean.get(testProperty).getClass());
        assertEquals("Check First Indexed Value is correct", testString1, bean.get(testProperty, index));
        assertEquals("Check First Array length is correct", new Integer(index+1),  new Integer(((LinkedList)bean.get(testProperty)).size()));

        // Set a second indexed value, should automatically grow the LinkedList and set appropriate indexed value
        index = index + 2;
        bean.set(testProperty, index, testInteger1);
        assertEquals("Check Second Indexed Value is correct", testInteger1, bean.get(testProperty, index));
        assertEquals("Check Second Array length is correct", new Integer(index+1),  new Integer(((LinkedList)bean.get(testProperty)).size()));
    }

    /**
     * Test Getting/Setting a primitive array 'Indexed' Property - use int[]
     */
    public void testIndexedPrimitiveArray() {

        int   index     = 3;
        int[] primitiveArray = new int[0];

        // Check the property & value doesn't exist
        assertNull("Check Indexed Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));

        // Add a DynaProperty of type int[]
        dynaClass.add(testProperty, primitiveArray.getClass());
        assertEquals("Check Indexed Property exists", primitiveArray.getClass(), dynaClass.getDynaProperty(testProperty).getType());
        assertEquals("Check Indexed Property is correct type", primitiveArray.getClass(), bean.get(testProperty).getClass());

        // Set an indexed value
        bean.set(testProperty, index, testInteger1);
        assertNotNull("Check Indexed Property is not null", bean.get(testProperty));
        assertEquals("Check Indexed Property is correct type", primitiveArray.getClass(), bean.get(testProperty).getClass());
        assertEquals("Check First Indexed Value is correct(a)", testInteger1, bean.get(testProperty, index));
        assertEquals("Check First Indexed Value is correct(b)", testInteger1, new Integer(((int[])bean.get(testProperty))[index]));
        assertEquals("Check Array length is correct", new Integer(index+1),  new Integer(((int[])bean.get(testProperty)).length));

        // Set a second indexed value, should automatically grow the int[] and set appropriate indexed value
        index = index + 2;
        bean.set(testProperty, index, testInteger2);
        assertEquals("Check Second Indexed Value is correct(a)", testInteger2, bean.get(testProperty, index));
        assertEquals("Check Second Indexed Value is correct(b)", testInteger2, new Integer(((int[])bean.get(testProperty))[index]));
        assertEquals("Check Second Array length is correct", new Integer(index+1),  new Integer(((int[])bean.get(testProperty)).length));

    }

    /**
     * Test Getting/Setting an Object array 'Indexed' Property - use String[]
     */
    public void testIndexedObjectArray() {

        int   index     = 3;
        Object objectArray = new String[0];

        // Check the property & value doesn't exist
        assertNull("Check Indexed Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));

        // Add a DynaProperty of type String[]
        dynaClass.add(testProperty, objectArray.getClass());
        assertEquals("Check Indexed Property exists", objectArray.getClass(), dynaClass.getDynaProperty(testProperty).getType());
        assertEquals("Check Indexed Property is correct type", objectArray.getClass(), bean.get(testProperty).getClass());

        // Set an indexed value
        bean.set(testProperty, index, testString1);
        assertNotNull("Check Indexed Property is not null", bean.get(testProperty));
        assertEquals("Check Indexed Property is correct type", objectArray.getClass(), bean.get(testProperty).getClass());
        assertEquals("Check First Indexed Value is correct(a)", testString1, bean.get(testProperty, index));
        assertEquals("Check First Indexed Value is correct(b)", testString1, ((String[])bean.get(testProperty))[index]);
        assertEquals("Check Array length is correct", new Integer(index+1),  new Integer(((String[])bean.get(testProperty)).length));

        // Set a second indexed value, should automatically grow the String[] and set appropriate indexed value
        index = index + 2;
        bean.set(testProperty, index, testString2);
        assertEquals("Check Second Indexed Value is correct(a)", testString2, bean.get(testProperty, index));
        assertEquals("Check Second Indexed Value is correct(b)", testString2, ((String[])bean.get(testProperty))[index]);
        assertEquals("Check Second Array length is correct", new Integer(index+1),  new Integer(((String[])bean.get(testProperty)).length));
    }

    /**
     * Test Getting/Setting an DynaBean[] array
     */
    public void testIndexedDynaBeanArray() {

        int   index     = 3;
        Object objectArray = new LazyDynaMap[0];

        // Check the property & value doesn't exist
        assertNull("Check Indexed Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));

        // Add a DynaProperty of type String[]
        dynaClass.add(testProperty, objectArray.getClass());
        assertEquals("Check Indexed Property exists", objectArray.getClass(), dynaClass.getDynaProperty(testProperty).getType());
        assertEquals("Check Indexed Property is correct type", objectArray.getClass(), bean.get(testProperty).getClass());

        // Retrieving from Array should initialize DynaBean
        for (int i = index; i >= 0; i--) {
            assertEquals("Check Array Components initialized", LazyDynaMap.class, bean.get(testProperty, index).getClass());
        }

        dynaClass.add(testPropertyB, objectArray.getClass());
        LazyDynaMap newMap = new LazyDynaMap();
        newMap.set(testPropertyB, testString2);
        bean.set(testPropertyA, index, newMap);
        assertEquals("Check Indexed Value is correct(a)", testString2, ((DynaBean)bean.get(testPropertyA, index)).get(testPropertyB));

    }

    /**
     * Test Setting an 'Indexed' Property using PropertyUtils
     */
    public void testIndexedPropertyUtils() {

        int   index     = 3;
        dynaClass.setReturnNull(false);

        // Check the property & value doesn't exist
        assertFalse("Check Indexed Property doesn't exist", dynaClass.isDynaProperty(testProperty));
        assertNull("Check Indexed Property is null", bean.get(testProperty));
        assertNull("Check Indexed value is null", bean.get(testProperty, index));

        // Use PropertyUtils to set the indexed value
        try {
          PropertyUtils.setProperty(bean, testProperty+"["+index+"]", testString1);
        }
        catch (NoSuchMethodException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }
        catch (InvocationTargetException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }
        catch (IllegalAccessException ex) {
            fail("testIndexedPropertyUtils threw "+ex);
        }

        // Check property value correctly set
        assertEquals("Check Indexed Bean Value is correct", testString1, bean.get(testProperty, index));

    }

    /**
     * Test Setting an Indexed Property when MutableDynaClass is set to restricted
     */
    public void testIndexedPropertyRestricted() {

        int   index     = 3;

        // Set the MutableDyanClass to 'restricted' (i.e. no new properties cab be added
        dynaClass.setRestricted(true);
        assertTrue("Check MutableDynaClass is restricted", dynaClass.isRestricted());

        // Check the property & value doesn't exist
        assertNull("Check Property doesn't exist", dynaClass.getDynaProperty(testProperty));
        assertNull("Check Value is null", bean.get(testProperty));

        // Set the property - should fail because property doesn't exist and MutableDynaClass is restricted
        try {
            bean.set(testProperty, index, testInteger1);
            fail("expected IllegalArgumentException trying to add new property to restricted MutableDynaClass");
        } catch (IllegalArgumentException expected) {
            // expected result
        }

    }

    /**
     * Test setting indexed property for type which is not List or Array
     */
    public void testIndexedInvalidType() {
        int   index     = 3;
        dynaClass.add(testProperty, String.class);
        assertFalse("Check Property is not indexed", dynaClass.getDynaProperty(testProperty).isIndexed());
        try {
            bean.set(testProperty, index, testString1);
            fail("set(property, index, value) should have thrown IllegalArgumentException");
        } catch (IllegalArgumentException expected) {
            // expected result
        }
    }

}