itests/osgi/src/test/java/org/apache/directmemory/tests/osgi/cache/CacheTest.java

package org.apache.directmemory.tests.osgi.cache;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import java.io.InputStream;

import org.apache.directmemory.cache.Cache;
import org.apache.directmemory.measures.Every;
import org.apache.directmemory.measures.Monitor;
import org.apache.directmemory.measures.Ram;
import org.apache.directmemory.memory.Pointer;
import org.apache.directmemory.tests.osgi.DirectMemoryOsgiTestSupport;
import org.junit.Test;
import org.junit.runner.RunWith;

import org.ops4j.pax.exam.Customizer;
import org.ops4j.pax.exam.Option;
import org.ops4j.pax.exam.junit.Configuration;
import org.ops4j.pax.exam.junit.JUnit4TestRunner;
import org.osgi.framework.Constants;


import static org.junit.Assert.*;
import static org.ops4j.pax.exam.CoreOptions.equinox;
import static org.ops4j.pax.exam.CoreOptions.felix;
import static org.ops4j.pax.exam.CoreOptions.mavenBundle;
import static org.ops4j.pax.exam.OptionUtils.combine;
import static org.ops4j.pax.swissbox.tinybundles.core.TinyBundles.modifyBundle;

@RunWith( JUnit4TestRunner.class )
public class CacheTest
    extends DirectMemoryOsgiTestSupport
{

    /**
     * This tests basic cache operations(put,retrieve) inside OSGi
     */
    @Test
    public void testCacheSingleton()
    {
        String key = "1";
        String obj = "Simple String Object";
        Cache.init( 1, Ram.Mb( 16 ) );
        Cache.scheduleDisposalEvery( Every.seconds( 1 ) );
        Cache.dump();

        Pointer p = Cache.put( "1", obj );
        Object result = Cache.retrieve( "1" );

        Cache.dump();
        Monitor.dump( "cache" );

        assertEquals( obj, result );
    }

    /**
     * This test basic cache operations(put,retrieve) inside OSGi using an object of an imported class (provided by an other bundle).
     */
    @Test
    public void testCacheSingletonWithImportedObject()
    {
        SimpleObject obj1 = new SimpleObject( "1", "Object One" );
        SimpleObject obj2 = new SimpleObject( "2", "Object Two" );
        Cache.init( 1, Ram.Mb( 16 ) );
        Cache.scheduleDisposalEvery( Every.seconds( 1 ) );
        Cache.dump();

        Pointer p1 = Cache.put( "1", obj1 );
        Pointer p2 = Cache.put( "2", obj2 );
        Object result1 = Cache.retrieve( "1" );
        Object result2 = Cache.retrieve( "2" );

        Cache.dump();
        Monitor.dump( "cache" );

        assertEquals( obj1, result1 );
        assertEquals( obj2, result2 );
    }


    @Configuration
    public Option[] configure()
    {
        return combine( getDynamicMemoryOptions(), new Customizer()
        {
            @Override
            public InputStream customizeTestProbe( InputStream testProbe )
            {
                return modifyBundle( testProbe ).add( SimpleObject.class ).set( Constants.DYNAMICIMPORT_PACKAGE,
                                                                                "*" ).build();
            }
        },
                        //Uncomment the line below to debug test
                        //enabledDebuggingOnPort(5005,false),
                        felix(), equinox() );
    }
}