src/test/org/apache/commons/pool/impl/TestStackObjectPool.java

/*
 * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//pool/src/test/org/apache/commons/pool/impl/TestStackObjectPool.java,v 1.1 2001/04/14 16:42:18 rwaldhoff Exp $
 * $Revision: 1.1 $
 * $Date: 2001/04/14 16:42:18 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
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 *    distribution.
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 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
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 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
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 * 5. Products derived from this software may not be called "Apache"
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 * This software consists of voluntary contributions made by many
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package org.apache.commons.pool.impl;

import junit.framework.*;
import org.apache.commons.pool.*;

/**
 * @author Rodney Waldhoff
 * @version $Id: TestStackObjectPool.java,v 1.1 2001/04/14 16:42:18 rwaldhoff Exp $
 */
public class TestStackObjectPool extends TestCase {
    public TestStackObjectPool(String testName) {
        super(testName);
    }

    public static Test suite() {
        return new TestSuite(TestStackObjectPool.class);
    }

    public static void main(String args[]) {
        String[] testCaseName = { TestStackObjectPool.class.getName() };
        junit.textui.TestRunner.main(testCaseName);
    }

    private StackObjectPool pool = null;

    public void setUp() {
        pool = new StackObjectPool(
            new PoolableObjectFactory()  {
                int counter = 0;
                public Object makeObject() { return String.valueOf(counter++); }
                public void destroyObject(Object obj) { }
                public boolean validateObject(Object obj) { return true; }
                public void activateObject(Object obj) { }
                public void passivateObject(Object obj) { }
            }
            );
    }

    public void testBorrow() {
        Object obj0 = pool.borrowObject();
        assertEquals("0",obj0);
        Object obj1 = pool.borrowObject();
        assertEquals("1",obj1);
        Object obj2 = pool.borrowObject();
        assertEquals("2",obj2);
    }

    public void testBorrowReturn() {
        Object obj0 = pool.borrowObject();
        assertEquals("0",obj0);
        Object obj1 = pool.borrowObject();
        assertEquals("1",obj1);
        Object obj2 = pool.borrowObject();
        assertEquals("2",obj2);
        pool.returnObject(obj2);
        obj2 = pool.borrowObject();
        assertEquals("2",obj2);
        pool.returnObject(obj1);
        obj1 = pool.borrowObject();
        assertEquals("1",obj1);
        pool.returnObject(obj0);
        pool.returnObject(obj2);
        obj2 = pool.borrowObject();
        assertEquals("2",obj2);
        obj0 = pool.borrowObject();
        assertEquals("0",obj0);
    }

    public void testNumActiveNumIdle() {
        assertEquals(0,pool.numActive());
        assertEquals(0,pool.numIdle());
        Object obj0 = pool.borrowObject();
        assertEquals(1,pool.numActive());
        assertEquals(0,pool.numIdle());
        Object obj1 = pool.borrowObject();
        assertEquals(2,pool.numActive());
        assertEquals(0,pool.numIdle());
        pool.returnObject(obj1);
        assertEquals(1,pool.numActive());
        assertEquals(1,pool.numIdle());
        pool.returnObject(obj0);
        assertEquals(0,pool.numActive());
        assertEquals(2,pool.numIdle());
    }

    public void testClear() {
        assertEquals(0,pool.numActive());
        assertEquals(0,pool.numIdle());
        Object obj0 = pool.borrowObject();
        Object obj1 = pool.borrowObject();
        assertEquals(2,pool.numActive());
        assertEquals(0,pool.numIdle());
        pool.returnObject(obj1);
        pool.returnObject(obj0);
        assertEquals(0,pool.numActive());
        assertEquals(2,pool.numIdle());
        pool.clear();
        assertEquals(0,pool.numActive());
        assertEquals(0,pool.numIdle());
        Object obj2 = pool.borrowObject();
        assertEquals("2",obj2);
    }

    public void testIdleCap() {
        Object[] active = new Object[100];
        for(int i=0;i<100;i++) {
            active[i] = pool.borrowObject();
        }
        assertEquals(100,pool.numActive());
        assertEquals(0,pool.numIdle());
        for(int i=0;i<100;i++) {
            pool.returnObject(active[i]);
            assertEquals(99 - i,pool.numActive());
            assertEquals((i < 8 ? i+1 : 8),pool.numIdle());
        }
    }
}