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     * Original code by                                                          *
009     *****************************************************************************/
010    package org.picocontainer.tck;
011    
012    import static org.junit.Assert.assertEquals;
013    import static org.junit.Assert.assertNotNull;
014    import static org.junit.Assert.assertSame;
015    
016    import org.junit.Test;
017    import org.picocontainer.Characteristics;
018    import org.picocontainer.MutablePicoContainer;
019    import org.picocontainer.PicoException;
020    
021    /**
022     * @author Aslak Hellesøy
023     */
024    public abstract class AbstractLazyInstantiationTest {
025    
026        protected abstract MutablePicoContainer createPicoContainer();
027    
028        public static class Kilroy {
029            public Kilroy(Havana havana) {
030                havana.graffiti("Kilroy was here");
031            }
032        }
033    
034        public static class Havana {
035            public String paint = "Clean wall";
036    
037            public void graffiti(String paint) {
038                this.paint = paint;
039            }
040        }
041    
042        @Test public void testLazyInstantiation() throws PicoException {
043            MutablePicoContainer pico = createPicoContainer();
044    
045            pico.as(Characteristics.CACHE).addComponent(Kilroy.class);
046            pico.as(Characteristics.CACHE).addComponent(Havana.class);
047    
048            assertSame(pico.getComponent(Havana.class), pico.getComponent(Havana.class));
049            assertNotNull(pico.getComponent(Havana.class));
050            assertEquals("Clean wall", pico.getComponent(Havana.class).paint);
051            assertNotNull(pico.getComponent(Kilroy.class));
052            assertEquals("Kilroy was here", pico.getComponent(Havana.class).paint);
053        }
054    }