dirkv 2004/05/13 13:13:25
Added: pool/src/test/org/apache/commons/pool/impl
TestSoftRefOutOfMemory.java
Log:
Testcase for Bugzilla Bug 28918: SoftReferenceObjectPool
Revision Changes Path
1.1
jakarta-commons/pool/src/test/org/apache/commons/pool/impl/TestSoftRefOutOfMemory.java
Index: TestSoftRefOutOfMemory.java
===================================================================
/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.pool.impl;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.apache.commons.pool.PoolableObjectFactory;
import java.util.Arrays;
import java.util.HashMap;
/**
* @author Dirk Verbeeck
* @version $Revision: 1.1 $ $Date: 2004/05/13 20:13:25 $
*/
public class TestSoftRefOutOfMemory extends TestCase {
private SoftReferenceObjectPool pool;
public TestSoftRefOutOfMemory(String testName) {
super(testName);
}
public static TestSuite suite() {
return new TestSuite(TestSoftRefOutOfMemory.class);
}
public void tearDown() throws Exception {
if (pool != null) {
pool.close();
pool = null;
}
System.gc();
}
public void testOutOfMemory() throws Exception {
pool = new SoftReferenceObjectPool(new SmallPoolableObjectFactory());
Object obj = pool.borrowObject();
assertEquals("1", obj);
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
try {
HashMap map = new HashMap();
for (int i = 0; i < 1000000; i++) {
map.put(new Integer(i), new String("Fred Flintstone" + i));
}
} catch (OutOfMemoryError ex) {
}
obj = pool.borrowObject();
assertEquals("2", obj);
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
}
public void testOutOfMemory1000() throws Exception {
pool = new SoftReferenceObjectPool(new SmallPoolableObjectFactory());
for (int i = 0 ; i < 1000 ; i++) {
pool.addObject();
}
Object obj = pool.borrowObject();
assertEquals("1000", obj);
pool.returnObject(obj);
obj = null;
assertEquals(1000, pool.getNumIdle());
try {
HashMap map = new HashMap();
for (int i = 0; i < 1000000; i++) {
map.put(new Integer(i), new String("Fred Flintstone" + i));
}
}
catch (OutOfMemoryError ex) { }
obj = pool.borrowObject();
assertEquals("1001", obj);
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
}
public void testOutOfMemoryLarge() throws Exception {
pool = new SoftReferenceObjectPool(new LargePoolableObjectFactory(1000000));
Object obj = pool.borrowObject();
assertTrue(((String)obj).startsWith("1."));
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
try {
HashMap map = new HashMap();
for (int i = 0; i < 1000000; i++) {
map.put(new Integer(i), new String("Fred Flintstone" + i));
}
}
catch (OutOfMemoryError ex) { }
obj = pool.borrowObject();
assertTrue(((String)obj).startsWith("2."));
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
}
public void testOutOfMemoryKeepMap() throws Exception {
pool = new SoftReferenceObjectPool(new LargePoolableObjectFactory(1000000));
Object obj = pool.borrowObject();
assertTrue(((String)obj).startsWith("1."));
pool.returnObject(obj);
obj = null;
assertEquals(1, pool.getNumIdle());
// allocate map outside try/catch block
HashMap map = new HashMap();
try {
for (int i = 0; i < 1000000; i++) {
map.put(new Integer(i), new String("Fred Flintstone" + i));
}
}
catch (OutOfMemoryError ex) { }
try {
obj = pool.borrowObject();
fail("Expected out of memory");
}
catch (OutOfMemoryError ex) { }
}
public static class SmallPoolableObjectFactory implements PoolableObjectFactory {
private int counter = 0;
public Object makeObject() {
counter++;
return String.valueOf(counter);
}
public boolean validateObject(Object obj) {
return true;
}
public void activateObject(Object obj) { }
public void passivateObject(Object obj) { }
public void destroyObject(Object obj) { }
}
public static class LargePoolableObjectFactory implements PoolableObjectFactory {
private String buffer;
private int counter = 0;
public LargePoolableObjectFactory(int size) {
char[] data = new char[size];
Arrays.fill(data, '.');
buffer = new String(data);
}
public Object makeObject() {
counter++;
return String.valueOf(counter) + buffer;
}
public boolean validateObject(Object obj) {
return true;
}
public void activateObject(Object obj) { }
public void passivateObject(Object obj) { }
public void destroyObject(Object obj) { }
}
}
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