001    /*****************************************************************************
002     * Copyright (c) PicoContainer Organization. All rights reserved.            *
003     * ------------------------------------------------------------------------- *
004     * The software in this package is published under the terms of the BSD      *
005     * style license a copy of which has been included with this distribution in *
006     * the LICENSE.txt file.                                                     *
007     *                                                                           *
008     * Idea by Rachel Davies, Original code by Aslak Hellesoy and Paul Hammant   *
009     *****************************************************************************/
010    
011    package org.picocontainer.defaults;
012    
013    import junit.framework.TestCase;
014    import org.picocontainer.MutablePicoContainer;
015    import org.picocontainer.PicoCompositionException;
016    import org.picocontainer.DefaultPicoContainer;
017    import org.picocontainer.injectors.AbstractInjector;
018    import org.picocontainer.testmodel.DependsOnTouchable;
019    import org.picocontainer.testmodel.SimpleTouchable;
020    
021    public class DelegatingPicoContainerTestCase extends TestCase {
022        private MutablePicoContainer parent;
023        private DefaultPicoContainer child;
024    
025        public void setUp() throws PicoCompositionException {
026            parent = new DefaultPicoContainer();
027            child = new DefaultPicoContainer(parent);
028        }
029    
030        public void testChildGetsFromParent() {
031            parent.addComponent(SimpleTouchable.class);
032            child.addComponent(DependsOnTouchable.class);
033            DependsOnTouchable dependsOnTouchable = child.getComponent(DependsOnTouchable.class);
034    
035            assertNotNull(dependsOnTouchable);
036        }
037    
038        public void testParentDoesntGetFromChild() {
039            child.addComponent(SimpleTouchable.class);
040            parent.addComponent(DependsOnTouchable.class);
041            try {
042                parent.getComponent(DependsOnTouchable.class);
043                fail();
044            } catch (AbstractInjector.UnsatisfiableDependenciesException e) {
045            }
046        }
047    
048        public void testChildOverridesParent() {
049            parent.addComponent(SimpleTouchable.class);
050            child.addComponent(SimpleTouchable.class);
051    
052            SimpleTouchable parentTouchable = parent.getComponent(SimpleTouchable.class);
053            SimpleTouchable childTouchable = child.getComponent(SimpleTouchable.class);
054            assertEquals(1, child.getComponents().size());
055            assertNotSame(parentTouchable, childTouchable);
056        }
057    }