无法用嘲讽phpunit模拟对象

时间:2019-03-20 07:33:47

标签: php unit-testing phpunit mockery phpunit-testing

我想测试连接到数据库,并且我有一个测试:

$author=['db_host'=>'a','db_name'=>DB_NAME,'db_user'=>DB_USER,'db_pass'=>DB_PASS,'db_timeout'=>DB_TIMEOUT];    

$mock_db=\Mockery::mock('DB')->makePartial();
$mock_db->shouldReceive('getAuthorDb')->andReturn($author);
$mock_ctrl= new DB;
$mock_ctrl->getAuthorDb=$mock_db;
$result=$mock_ctrl->getConnect();
$this->assertNotNull($result);

这是数据库类:

class DB
{
    public $obj = null;
    public $table = 'contacts';
    public function __construct(){
        $this->getConnect();        
    }
    public function getAuthorDb(){
        return ['db_host'=>HOST,'db_name'=>DB_NAME,'db_user'=>DB_USER,'db_pass'=>DB_PASS,'db_timeout'=>DB_TIMEOUT];
    }
    public function getConnect(){
        try{
            $author=$this->getAuthorDb();
            $dsn="mysql:host=".$author['db_host']."; dbname=".$author['db_name'];
            $this->obj = new \PDO($dsn, $author['db_user'], $author['db_pass'],$author['db_timeout']);
            $this->obj->query("set names 'utf8' ");
        }
        catch(\Exception $e)
        {
            echo $e->getMessage();  exit;
        }
    }
}

但显然getAuthorDb方法不是模拟的。它是reak数据。为什么?!

请帮助

1 个答案:

答案 0 :(得分:0)

调用new DB时,您是在创建真实的类,而不是在模拟的类。您必须将模拟的数据库实例传递给正在使用它的任何类或函数。
要记住的重要一点是,模拟类仍然是类,您不会在全局范围内替换名称DB。您必须在其他地方使用模拟的类,否则它就坐在那里。