public function test_zRem()
{
$this->assertEquals('zrem k m', $this->redis->zRem('k', 'm'));
$this->assertEquals('zrem k m m1', $this->redis->zRem('k', 'm', 'm1'));
$this->assertEquals('zrem k m m1', $this->redis->zRem('k', array('m', 'm1')));
}