bijukunjummen/gist:3315275

## gistfile1.java
package org.bk.samples.cache;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.equalTo;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.Cache;
import org.springframework.cache.annotation.Cacheable;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.concurrent.ConcurrentMapCacheFactoryBean;
import org.springframework.cache.support.SimpleCacheManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.stereotype.Component;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes={TestSpringCache.TestConfiguration.class})
public class TestSpringCache {

	@Autowired TestService testService;

	@Test
	public void testCache() {
		String response1 = testService.cachedMethod("param1", "param2");
		String response2 = testService.cachedMethod("param1", "param2");
		assertThat(response2, equalTo(response1));
	}


	@Configuration
	@EnableCaching
	@ComponentScan("org.bk.samples.cache")
	public static class TestConfiguration{

		@Bean
		public SimpleCacheManager cacheManager(){
			SimpleCacheManager cacheManager = new SimpleCacheManager();
			List<Cache> caches = new ArrayList<Cache>();
			caches.add(cacheBean().getObject());
			cacheManager.setCaches(caches );
			return cacheManager;
		}

		@Bean
		public ConcurrentMapCacheFactoryBean cacheBean(){
			ConcurrentMapCacheFactoryBean cacheFactoryBean = new ConcurrentMapCacheFactoryBean();
			cacheFactoryBean.setName("default");
			return cacheFactoryBean;
		}
	}

}

interface TestService{
	String cachedMethod(String param1,String param2);
}

@Component
class TestServiceImpl implements TestService{

	@Cacheable(value="default", key="#p0.concat('-').concat(#p1)")
	public String cachedMethod(String param1, String param2){
		return "response " + new Random().nextInt();
	}
}
	package org.bk.samples.cache;

	import static org.hamcrest.MatcherAssert.assertThat;
	import static org.hamcrest.Matchers.equalTo;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.Random;

	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.cache.Cache;
	import org.springframework.cache.annotation.Cacheable;
	import org.springframework.cache.annotation.EnableCaching;
	import org.springframework.cache.concurrent.ConcurrentMapCacheFactoryBean;
	import org.springframework.cache.support.SimpleCacheManager;
	import org.springframework.context.annotation.Bean;
	import org.springframework.context.annotation.ComponentScan;
	import org.springframework.context.annotation.Configuration;
	import org.springframework.stereotype.Component;
	import org.springframework.test.context.ContextConfiguration;
	import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

	@RunWith(SpringJUnit4ClassRunner.class)
	@ContextConfiguration(classes={TestSpringCache.TestConfiguration.class})
	public class TestSpringCache {

	@Autowired TestService testService;

	@Test
	public void testCache() {
	String response1 = testService.cachedMethod("param1", "param2");
	String response2 = testService.cachedMethod("param1", "param2");
	assertThat(response2, equalTo(response1));
	}


	@Configuration
	@EnableCaching
	@ComponentScan("org.bk.samples.cache")
	public static class TestConfiguration{

	@Bean
	public SimpleCacheManager cacheManager(){
	SimpleCacheManager cacheManager = new SimpleCacheManager();
	List<Cache> caches = new ArrayList<Cache>();
	caches.add(cacheBean().getObject());
	cacheManager.setCaches(caches );
	return cacheManager;
	}

	@Bean
	public ConcurrentMapCacheFactoryBean cacheBean(){
	ConcurrentMapCacheFactoryBean cacheFactoryBean = new ConcurrentMapCacheFactoryBean();
	cacheFactoryBean.setName("default");
	return cacheFactoryBean;
	}
	}

	}

	interface TestService{
	String cachedMethod(String param1,String param2);
	}

	@Component
	class TestServiceImpl implements TestService{

	@Cacheable(value="default", key="#p0.concat('-').concat(#p1)")
	public String cachedMethod(String param1, String param2){
	return "response " + new Random().nextInt();
	}
	}