Added sharding using ketama

src/test/java/redis/clients/jedis/tests/ShardedJedisTest.java

@@ -0,0 +1,53 @@
+package redis.clients.jedis.tests;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import redis.clients.jedis.Jedis;
+import redis.clients.jedis.Protocol;
+import redis.clients.jedis.ShardedJedis;
+import redis.clients.util.ShardInfo;
+
+public class ShardedJedisTest extends Assert {
+    @Test
+    public void checkSharding() throws IOException {
+	List<ShardInfo> shards = new ArrayList<ShardInfo>();
+	shards.add(new ShardInfo("localhost", Protocol.DEFAULT_PORT));
+	shards.add(new ShardInfo("localhost", Protocol.DEFAULT_PORT + 1));
+	ShardedJedis jedis = new ShardedJedis(shards);
+	ShardInfo s1 = jedis.getShardInfo("a");
+	ShardInfo s2 = jedis.getShardInfo("b");
+	assertNotSame(s1, s2);
+    }
+
+    @Test
+    public void trySharding() throws IOException {
+	List<ShardInfo> shards = new ArrayList<ShardInfo>();
+	ShardInfo si = new ShardInfo("localhost", Protocol.DEFAULT_PORT);
+	si.setPassword("foobared");
+	shards.add(si);
+	si = new ShardInfo("localhost", Protocol.DEFAULT_PORT + 1);
+	si.setPassword("foobared");
+	shards.add(si);
+	ShardedJedis jedis = new ShardedJedis(shards);
+	jedis.set("a", "bar");
+	ShardInfo s1 = jedis.getShardInfo("a");
+	jedis.set("b", "bar1");
+	ShardInfo s2 = jedis.getShardInfo("b");
+	jedis.disconnect();
+
+	Jedis j = new Jedis(s1.getHost(), s1.getPort());
+	j.auth("foobared");
+	assertEquals("bar", j.get("a"));
+	j.disconnect();
+
+	j = new Jedis(s2.getHost(), s2.getPort());
+	j.auth("foobared");
+	assertEquals("bar1", j.get("b"));
+	j.disconnect();
+    }
+}