public function test_sAdd()
{
$this->assertEquals('sadd set v', $this->redis->sAdd('set', 'v'));
$this->assertEquals('sadd set v v1', $this->redis->sAdd('set', 'v', 'v1'));
$this->assertEquals('sadd set v v1', $this->redis->sAdd('set', array('v', 'v1')));
}