MemcachedDemo.java

package org.springside.examples.showcase.cache;

import static org.junit.Assert.*;

import java.util.Map;

import org.junit.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springside.modules.memcached.SpyMemcachedClient;
import org.springside.modules.test.spring.SpringContextTestCase;

@ContextConfiguration(locations = { "/cache/applicationContext-memcached.xml" })
public class MemcachedDemo extends SpringContextTestCase {

	@Autowired
	private SpyMemcachedClient spyMemcachedClient;

	@Test
	public void normal() {

		String key = "consumer:1";
		String value = "admin";

		spyMemcachedClient.set(key, 60 * 60 * 1, value);
		String result = spyMemcachedClient.get(key);
		assertEquals(value, result);

		spyMemcachedClient.delete(key);
		result = spyMemcachedClient.get(key);
		assertNull(result);
	}

	@Test
	public void getBulk() {

		String key1 = "consumer:1";
		String value1 = "admin";

		String key2 = "consumer:2";
		String value2 = "calvin";

		String key3 = "invalidKey";

		spyMemcachedClient.set(key1, 60 * 60 * 1, value1);
		spyMemcachedClient.set(key2, 60 * 60 * 1, value2);

		Map<String, String> result = spyMemcachedClient.getBulk(key1, key2);
		assertEquals(value1, result.get(key1));
		assertEquals(value2, result.get(key2));
		assertNull(result.get(key3));
	}

	@Test
	public void incr() {
		String key = "incr_key";

		//注意,incr返回的数值使用long表达
		long result = spyMemcachedClient.incr(key, 2, 1);
		assertEquals(1, result);
		//注意,get返回的数值使用字符串表达
		assertEquals("1", spyMemcachedClient.get(key));

		result = spyMemcachedClient.incr(key, 2, 1);
		assertEquals(3, result);
		assertEquals("3", spyMemcachedClient.get(key));

		key = "set_and_incr_key";
		//注意,set中的数值必须使用字符串,后面的incr操作结果才会正确.
		spyMemcachedClient.set(key, 60 * 60 * 1, "1");
		result = spyMemcachedClient.incr(key, 2, 1);
		assertEquals(3, result);
	}
}