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1
26
27 package net.sourceforge.groboutils.util.datastruct.v1;
28
29 import net.sourceforge.groboutils.junit.v1.MultiThreadedTestRunner;
30
31 import junit.framework.Test;
32 import junit.framework.TestCase;
33 import junit.framework.TestSuite;
34
35
42 public class ObjectCacheUTest extends TestCase
43 {
44 private static final Class  THIS_CLASS = ObjectCacheUTest.class;
45
46 public ObjectCacheUTest( String name )
47 {
48 super( name );
49 }
50
51 public static Test suite()
52 {
53 TestSuite suite = new TestSuite( THIS_CLASS );
54
55 return suite;
56 }
57
58 public static void main( String [] args )
59 {
60 String [] name = { THIS_CLASS.getName() };
61
62
65 junit.textui.TestRunner.main( name );
66 }
67
68 protected void setUp() throws Exception
69 {
70 super.setUp();
71
72 }
74
75
76 protected void tearDown() throws Exception
77 {
78
80
81 super.tearDown();
82 }
83
84
85 public class OCreator implements ObjectCache.ObjectCreator
86 {
87 private int count = 0;
88 public synchronized Object createObject()
89 {
90 return "Object "+(++count);
91 }
92
93 public int getCreationCount()
94 {
95 return count;
96 }
97 }
98
99
100
101 public void testInstantiate()
102 {
103 ObjectCache oc = new ObjectCache();
104 assertEquals( "Size must be at default of UNLIMITED.",
105 oc.UNLIMITED_SIZE, oc.getMaxSize() );
106 assertEquals( "Underflows must be at zero.",
107 0, oc.getUnderflows() );
108 assertEquals( "Overflows must be at zero.",
109 0, oc.getOverflows() );
110 assertTrue( "Cache should be empty after creation.", oc.get() == null );
113
114 oc = new ObjectCache( 10 );
115 assertEquals( "Size must be at specified size.",
116 10, oc.getMaxSize() );
117 assertEquals( "Underflows must be at zero.",
118 0, oc.getUnderflows() );
119 assertEquals( "Overflows must be at zero.",
120 0, oc.getOverflows() );
121 assertTrue( "Cache should be empty after creation.", oc.get() == null );
124
125 oc = new ObjectCache( Object .class );
126 assertEquals( "Size must be at default of UNLIMITED.",
127 oc.UNLIMITED_SIZE, oc.getMaxSize() );
128 assertEquals( "Underflows must be at zero.",
129 0, oc.getUnderflows() );
130 assertEquals( "Overflows must be at zero.",
131 0, oc.getOverflows() );
132
133 oc = new ObjectCache( Object .class, 10 );
134 assertEquals( "Size must be at specified size.",
135 10, oc.getMaxSize() );
136 assertEquals( "Underflows must be at zero.",
137 0, oc.getUnderflows() );
138 assertEquals( "Overflows must be at zero.",
139 0, oc.getOverflows() );
140
141 oc = new ObjectCache( new OCreator() );
142 assertEquals( "Size must be at default of UNLIMITED.",
143 oc.UNLIMITED_SIZE, oc.getMaxSize() );
144 assertEquals( "Underflows must be at zero.",
145 0, oc.getUnderflows() );
146 assertEquals( "Overflows must be at zero.",
147 0, oc.getOverflows() );
148
149 oc = new ObjectCache( new OCreator(), 10 );
150 assertEquals( "Size must be at specified size.",
151 10, oc.getMaxSize() );
152 assertEquals( "Underflows must be at zero.",
153 0, oc.getUnderflows() );
154 assertEquals( "Overflows must be at zero.",
155 0, oc.getOverflows() );
156 }
157
158
159 public void testSimpleAdd() throws InterruptedException
160 {
161 ObjectCache oc = new ObjectCache();
162 Object o1 = new Object ();
163 assertTrue( "Cache should be empty after creation.", oc.get() == null );
165 oc.putBack( o1 );
166 Object o2 = oc.get();
167 assertEquals( "What gets put in, needs to equal what gets put out.",
168 o1, o2 );
169 assertTrue( "Cache should be empty after removing.", oc.get() == null );
171 }
172
173 public void testClassCreator()
174 {
175 ObjectCache oc = new ObjectCache( Object .class );
176 Object o1 = oc.get();
177 assertNotNull( "Cache should have created an entry.", o1 );
178 assertEquals( "Cache should have created an Object.",
179 Object .class, o1.getClass() );
180 }
181
182 public void testObjectCreator()
183 {
184 ObjectCache oc = new ObjectCache( new OCreator() );
185 Object o1 = oc.get();
186 assertNotNull( "Cache should have created an entry.", o1 );
187 assertEquals( "Cache should have created a String.",
188 String .class, o1.getClass() );
189 }
190
191 public void testFill()
192 {
193 OCreator creator = new OCreator();
194 ObjectCache oc = new ObjectCache( creator, 5, true );
195 assertEquals( "Cache did not fill itself.",
196 5, creator.getCreationCount() );
197
198 for (int i = 0; i < 5; i++)
200 {
201 Object o = oc.get();
202 assertNotNull( "Cache with creator should never return null.",
203 o );
204 }
205
206 oc.fillCache();
208 assertEquals( "Cache did not fill itself.",
209 10, creator.getCreationCount() );
210 }
211
212 public void testPutBack()
213 {
214 ObjectCache oc = new ObjectCache( 1 );
215 Object o1 = new Object ();
216 Object o2 = new Object ();
217 oc.putBack( o1 );
218 oc.putBack( o2 );
219 assertEquals( "ObjectCache should have an overflow.",
220 1, oc.getOverflows() );
221 Object o3 = oc.get();
222 assertEquals( "Cache should have returned 1st object.",
223 o1, o3 );
224 Object o4 = oc.get();
225 assertEquals( "Cache should have returned null.",
226 null, o4 );
227 }
228 }
229 |
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