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 package org.picocontainer.adapters;
009
010 import static org.junit.Assert.assertEquals;
011 import static org.junit.Assert.assertTrue;
012 import static org.junit.Assert.fail;
013
014 import java.lang.reflect.Constructor;
015
016 import org.junit.Test;
017 import org.picocontainer.ComponentAdapter;
018 import org.picocontainer.ComponentMonitor;
019 import org.picocontainer.Parameter;
020 import org.picocontainer.PicoCompositionException;
021 import org.picocontainer.PicoContainer;
022 import org.picocontainer.PicoVerificationException;
023 import org.picocontainer.PicoVisitor;
024 import org.picocontainer.injectors.AbstractInjector;
025 import org.picocontainer.lifecycle.NullLifecycleStrategy;
026 import org.picocontainer.monitors.NullComponentMonitor;
027 import org.picocontainer.parameters.ConstantParameter;
028
029 /**
030 * Test AbstractAdapter behaviour
031 * @author Jörg Schaible
032 */
033 public class ComponentAdapterTestCase {
034
035 @SuppressWarnings("serial")
036 private static class TestAdapter<T> extends AbstractAdapter<T> {
037
038 TestAdapter(Object componentKey, Class<T> componentImplementation, ComponentMonitor componentMonitor) {
039 super(componentKey, componentImplementation, componentMonitor);
040 }
041 TestAdapter(Object componentKey, Class<T> componentImplementation) {
042 super(componentKey, componentImplementation);
043 }
044 public T getComponentInstance(PicoContainer container) throws PicoCompositionException {
045 return null;
046 }
047 public void verify(PicoContainer container) throws PicoVerificationException {
048 }
049
050 public String getDescriptor() {
051 return TestAdapter.class.getName() + ":" ;
052 }
053 }
054
055 @SuppressWarnings("serial")
056 private static class TestMonitoringComponentAdapter<T> extends AbstractAdapter<T> {
057 TestMonitoringComponentAdapter(ComponentMonitor componentMonitor) {
058 super(null, null, componentMonitor);
059 }
060 public T getComponentInstance(PicoContainer container) throws PicoCompositionException {
061 return null;
062 }
063 public void verify(PicoContainer container) throws PicoVerificationException {
064 }
065 public Object getComponentKey() {
066 return null;
067 }
068 public Class<T> getComponentImplementation() {
069 return null;
070 }
071 public void accept(PicoVisitor visitor) {
072 }
073
074 public String getDescriptor() {
075 return null;
076 }
077 }
078
079 @SuppressWarnings("serial")
080 private static class TestInstantiatingAdapter<T> extends AbstractInjector<T> {
081 TestInstantiatingAdapter(Object componentKey, Class<T> componentImplementation, Parameter... parameters) {
082 super(componentKey, componentImplementation, parameters, new NullComponentMonitor(), new NullLifecycleStrategy(), false);
083 }
084 protected Constructor<T> getGreediestSatisfiableConstructor(PicoContainer container) throws PicoCompositionException {
085 return null;
086 }
087
088 public void verify(PicoContainer container) throws PicoCompositionException {
089 }
090
091 public T getComponentInstance(PicoContainer container) throws PicoCompositionException {
092 return null;
093 }
094
095 public String getDescriptor() {
096 return null;
097 }
098 }
099
100 @Test public void testComponentImplementationMayNotBeNull() {
101 try {
102 new TestAdapter<Object>("Key", null);
103 fail("NullPointerException expected");
104 } catch (NullPointerException e) {
105 assertEquals("componentImplementation", e.getMessage());
106 }
107 }
108
109 @Test public void testComponentKeyCanBeNullButNotRequested() {
110 ComponentAdapter<String> componentAdapter = new TestAdapter<String>(null, String.class);
111 try {
112 componentAdapter.getComponentKey();
113 fail("NullPointerException expected");
114 } catch (NullPointerException e) {
115 assertEquals("componentKey", e.getMessage());
116 }
117 }
118
119 @Test public void testComponentMonitorMayNotBeNull() {
120 try {
121 new TestAdapter<String>("Key", String.class, null);
122 fail("NullPointerException expected");
123 } catch (NullPointerException e) {
124 assertEquals("ComponentMonitor==null", e.getMessage());
125 }
126 try {
127 new TestMonitoringComponentAdapter<Object>(null);
128 fail("NullPointerException expected");
129 } catch (NullPointerException e) {
130 assertEquals("ComponentMonitor==null", e.getMessage());
131 }
132 }
133
134 @Test public void testParameterMayNotBeNull() throws Exception {
135 try {
136 new TestInstantiatingAdapter<String>("Key", String.class, new Parameter[]{new ConstantParameter("Value"), null});
137 fail("Thrown " + NullPointerException.class.getName() + " expected");
138 } catch (final NullPointerException e) {
139 assertTrue(e.getMessage().endsWith("1 is null"));
140 }
141 }
142
143 @Test public void testStringRepresentation() {
144 ComponentAdapter<Integer> componentAdapter = new TestAdapter<Integer>("Key", Integer.class);
145 assertEquals(TestAdapter.class.getName() + ":Key", componentAdapter.toString());
146 }
147 }