public function test_zAdd()
{
$this->assertEquals('zadd k 101 m', $this->redis->zAdd('k', 101, 'm'));
$this->assertEquals('zadd k 101 m 102 m2', $this->redis->zAdd('k', 101, 'm', 102, 'm2'));
$this->assertEquals('zadd k 101 m 102 m2', $this->redis->zAdd('k', array(101 => 'm', 102 => 'm2')));
}