Implemented BLPOP

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

@@ -102,6 +102,15 @@ public class ProtocolTest extends Assert {
 	expected2.add(sub);
 
 	assertEquals(expected2, response2);
+    }
 
+    @SuppressWarnings("unchecked")
+    @Test
+    public void nullMultiBulkReply() throws JedisException {
+	InputStream is = new ByteArrayInputStream("*-1\r\n".getBytes());
+	Protocol protocol = new Protocol();
+	List<String> response = (List<String>) (List<?>) protocol
+		.getMultiBulkReply(is);
+	assertNull(response);
     }
 }

src/test/java/redis/clients/jedis/tests/commands/ListCommandsTest.java

@@ -220,4 +220,26 @@ public class ListCommandsTest extends Assert {
 	assertEquals(srcExpected, jedis.lrange("foo", 0, 1000));
 	assertEquals(dstExpected, jedis.lrange("dst", 0, 1000));
     }
-}
+
+    @Test
+    public void blpop() throws JedisException {
+	List<String> result = jedis.blpop(2, "foo");
+	assertNull(result);
+
+	new Thread(new Runnable() {
+	    public void run() {
+		try {
+		    Jedis j = new Jedis("localhost");
+		    j.connect();
+		    List<String> result = j.blpop(0, "foo");
+		    assertNotNull(result);
+		    assertEquals(1, result.size());
+		    assertEquals("bar", result.get(0));
+		} catch (Exception ex) {
+		    fail(ex.getMessage());
+		}
+	    }
+	});
+	jedis.lpush("foo", "bar");
+    }
+}

src/test/java/redis/clients/jedis/tests/commands/TransactionCommandsTest.java

@@ -90,7 +90,7 @@ public class TransactionCommandsTest extends Assert {
 
 	t.set("mykey", val);
 	List<Object> resp = t.exec();
-	assertEquals(new ArrayList<Object>(), resp);
+	assertEquals(null, resp);
     }
 
     @Test