public function test_hDel()
{
$this->assertEquals('hdel key field', $this->redis->hDel('key', 'field'));
$this->assertEquals('hdel key field field1', $this->redis->hDel('key', 'field', 'field1'));
$this->assertEquals('hdel key field field1', $this->redis->hDel('key', array('field', 'field1')));
}