/*
* Copyright 1999-2012 Alibaba Group.
*
* 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 com.alibaba.dubbo.config.cache;
import junit.framework.TestCase;
import org.junit.Assert;
import org.junit.Test;
import com.alibaba.dubbo.config.ApplicationConfig;
import com.alibaba.dubbo.config.ProtocolConfig;
import com.alibaba.dubbo.config.ReferenceConfig;
import com.alibaba.dubbo.config.RegistryConfig;
import com.alibaba.dubbo.config.ServiceConfig;
/**
* CacheTest
*
* @author william.liangf
*/
public class CacheTest extends TestCase {
@Test
public void testCache() throws Exception {
ServiceConfig<CacheService> service = new ServiceConfig<CacheService>();
service.setApplication(new ApplicationConfig("cache-provider"));
service.setRegistry(new RegistryConfig("N/A"));
service.setProtocol(new ProtocolConfig("dubbo", 29582));
service.setInterface(CacheService.class.getName());
service.setRef(new CacheServiceImpl());
service.export();
try {
ReferenceConfig<CacheService> reference = new ReferenceConfig<CacheService>();
reference.setApplication(new ApplicationConfig("cache-consumer"));
reference.setInterface(CacheService.class);
reference.setUrl("dubbo://127.0.0.1:29582?scope=remote&cache=true");
CacheService cacheService = reference.get();
try {
// 测试缓存生效，多次调用返回同样的结果。(服务器端自增长返回值)
String fix = null;
for (int i = 0; i < 3; i ++) {
String result = cacheService.findCache("0");
Assert.assertTrue(fix == null || fix.equals(result));
fix = result;
Thread.sleep(100);
}
// LRU的缺省cache.size为1000，执行1001次，应有溢出
for (int n = 0; n < 1001; n ++) {
String pre = null;
for (int i = 0; i < 10; i ++) {
String result = cacheService.findCache(String.valueOf(n));
Assert.assertTrue(pre == null || pre.equals(result));
pre = result;
}
}
// 测试LRU有移除最开始的一个缓存项
String result = cacheService.findCache("0");
Assert.assertFalse(fix == null || fix.equals(result));
} finally {
reference.destroy();
}
} finally {
service.unexport();
}
}
}