| package org.apache.commons.jcs.engine.memory.lru; |
| |
| /* |
| * 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 junit.extensions.ActiveTestSuite; |
| import junit.framework.Test; |
| import junit.framework.TestCase; |
| import org.apache.commons.jcs.engine.CacheElement; |
| import org.apache.commons.jcs.engine.behavior.ICacheElement; |
| import org.apache.commons.jcs.engine.control.CompositeCache; |
| import org.apache.commons.jcs.engine.control.CompositeCacheManager; |
| |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Test which exercises the LRUMemory cache. This one uses three different |
| * regions for three threads. |
| */ |
| public class LRUMemoryCacheConcurrentUnitTest |
| extends TestCase |
| { |
| /** |
| * Number of items to cache, twice the configured maxObjects for the memory |
| * cache regions. |
| */ |
| private static int items = 200; |
| |
| /** |
| * Constructor for the TestDiskCache object. |
| * <p> |
| * @param testName |
| */ |
| public LRUMemoryCacheConcurrentUnitTest( String testName ) |
| { |
| super( testName ); |
| } |
| |
| /** |
| * Main method passes this test to the text test runner. |
| * <p> |
| * @param args |
| */ |
| public static void main( String args[] ) |
| { |
| String[] testCaseName = { LRUMemoryCacheConcurrentUnitTest.class.getName() }; |
| junit.textui.TestRunner.main( testCaseName ); |
| } |
| |
| /** |
| * A unit test suite for JUnit |
| * <p> |
| * @return The test suite |
| */ |
| public static Test suite() |
| { |
| ActiveTestSuite suite = new ActiveTestSuite(); |
| |
| suite.addTest( new LRUMemoryCacheConcurrentUnitTest( "testLRUMemoryCache" ) |
| { |
| @Override |
| public void runTest() |
| throws Exception |
| { |
| this.runTestForRegion( "testRegion1" ); |
| } |
| } ); |
| |
| return suite; |
| } |
| |
| /** |
| * Test setup |
| */ |
| @Override |
| public void setUp() |
| { |
| //JCS.setConfigFilename( "/TestDiskCache.ccf" ); |
| } |
| |
| /** |
| * Adds items to cache, gets them, and removes them. The item count is more |
| * than the size of the memory cache, so items should be dumped. |
| * <p> |
| * @param region |
| * Name of the region to access |
| * @throws Exception |
| * If an error occurs |
| */ |
| public void runTestForRegion( String region ) |
| throws Exception |
| { |
| CompositeCacheManager cacheMgr = CompositeCacheManager.getUnconfiguredInstance(); |
| cacheMgr.configure( "/TestDiskCache.ccf" ); |
| CompositeCache<String, String> cache = cacheMgr.getCache( region ); |
| |
| LRUMemoryCache<String, String> lru = new LRUMemoryCache<>(); |
| lru.initialize( cache ); |
| |
| // Add items to cache |
| |
| for ( int i = 0; i < items; i++ ) |
| { |
| ICacheElement<String, String> ice = new CacheElement<>( cache.getCacheName(), i + ":key", region + " data " + i ); |
| ice.setElementAttributes( cache.getElementAttributes() ); |
| lru.update( ice ); |
| } |
| |
| // Test that initial items have been purged |
| for ( int i = 0; i < 100; i++ ) |
| { |
| assertNull( "Should not have " + i + ":key", lru.get( i + ":key" ) ); |
| } |
| |
| // Test that last items are in cache |
| for ( int i = 100; i < items; i++ ) |
| { |
| String value = lru.get( i + ":key" ).getVal(); |
| assertEquals( region + " data " + i, value ); |
| } |
| |
| // Test that getMultiple returns all the items remaining in cache and none of the missing ones |
| Set<String> keys = new HashSet<>(); |
| for ( int i = 0; i < items; i++ ) |
| { |
| keys.add( i + ":key" ); |
| } |
| |
| Map<String, ICacheElement<String, String>> elements = lru.getMultiple( keys ); |
| for ( int i = 0; i < 100; i++ ) |
| { |
| assertNull( "Should not have " + i + ":key", elements.get( i + ":key" ) ); |
| } |
| for ( int i = 100; i < items; i++ ) |
| { |
| ICacheElement<String, String> element = elements.get( i + ":key" ); |
| assertNotNull( "element " + i + ":key is missing", element ); |
| assertEquals( "value " + i + ":key", region + " data " + i, element.getVal() ); |
| } |
| |
| // Remove all the items |
| for ( int i = 0; i < items; i++ ) |
| { |
| lru.remove( i + ":key" ); |
| } |
| |
| // Verify removal |
| for ( int i = 0; i < items; i++ ) |
| { |
| assertNull( "Removed key should be null: " + i + ":key", lru.get( i + ":key" ) ); |
| } |
| } |
| } |