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51 package org.apache.avalon.framework.component.test;
52
53 import junit.framework.TestCase;
54 import org.apache.avalon.framework.component.Component;
55 import org.apache.avalon.framework.component.ComponentException;
56 import org.apache.avalon.framework.component.DefaultComponentSelector;
57
58
63 public final class DefaultComponentSelectorTestCase
64 extends TestCase
65 {
66 class FeatureComponent
67 implements Component
68 {
69 Object  m_feature;
70 public FeatureComponent( final Object feature )
71 {
72 m_feature = feature;
73 }
74
75 public Object getFeature()
76 {
77 return m_feature;
78 }
79 }
80
81 class Hint
82 {
83 String m_name;
84
85 public Hint( final String name )
86 {
87 m_name = name;
88 }
89
90 public String getName()
91 {
92 return m_name;
93 }
94 }
95
96 private DefaultComponentSelector m_componentSelector;
97 protected boolean m_exceptionThrown;
98
99 public DefaultComponentSelectorTestCase()
100 {
101 this("DefaultComponentSelector Test Case");
102 }
103
104 public DefaultComponentSelectorTestCase( final String name )
105 {
106 super( name );
107 }
108
109 protected void setUp()
110 throws Exception
111 {
112 m_componentSelector = new DefaultComponentSelector();
113 m_exceptionThrown =false;
114 }
115
116 protected void tearDown()
117 throws Exception
118 {
119 m_componentSelector = null;
120 }
121
122
128 public void testlookup()
129 throws Exception
130 {
131 Hint hintA = new Hint("a");
132 Hint hintB = new Hint("b");
133 m_componentSelector.put(hintA,new FeatureComponent(hintA));
134 m_componentSelector.put(hintB,new FeatureComponent(hintB));
135 FeatureComponent fComponent = (FeatureComponent)m_componentSelector.select(hintA);
136 assertEquals( hintA, fComponent.getFeature() );
137 Object o = null;
138 try
139 {
140 o = (FeatureComponent)m_componentSelector.select(new Hint("no component"));
141 }
142 catch (ComponentException ce)
143 {
144 m_exceptionThrown = true;
145 }
146 if (o == null)
147 assertTrue("ComponentException was not thrown when component was not found by lookup." ,m_exceptionThrown );
148 else
149 assertTrue("component was found by lookup ,when there was no component.",false);
150 }
151
152 public void testhasComponent()
153 throws Exception
154 {
155 Hint hintA = new Hint("a");
156 Hint hintB = new Hint("b");
157 m_componentSelector.put(hintA,new FeatureComponent(hintA));
158 assertTrue(m_componentSelector.hasComponent(hintA));
159 assertTrue(!m_componentSelector.hasComponent(hintB));
160 }
161
162 public void testmakeReadOnly()
164 throws Exception
165 {
166 Hint hintA = new Hint("a");
167 Hint hintB = new Hint("b");
168 m_componentSelector.put(hintA,new FeatureComponent(hintA));
170 FeatureComponent fComponent = (FeatureComponent)m_componentSelector.select(hintA);
171 assertEquals( hintA, fComponent.getFeature() );
172 m_componentSelector.makeReadOnly();
173 try
175 {
176 m_componentSelector.put(hintB,new FeatureComponent(hintB));
177 }
178 catch (IllegalStateException se)
179 {
180 m_exceptionThrown = true;
181 }
182 assertTrue("IllegalStateException was not thrown in put after makeReadOnly." , m_exceptionThrown );
183 }
184 }
185
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