symfony3.4:如何在UnitTest中获取serviceContainer

我想访问类导入的对象

但我在它的容器中传递了LoggerInterface$logger:

class Import
{
....
    public function __construct(LoggerInterface $logger)
    {
     ...
    }

....
 }

class ImportTest extends TestCase {
....
   protected function setUp()
    {
      $this->ImportObj = new Import(); // I have to pass some 
                                       // object as an object is passed 
                                       // in import class   
    ....   
    }
....
}

正如我们所知,我们可以使用serviceContainer逻辑来实现这一点,而不是使用new Import()

$this->ImportObj=$this->getContainer()->get('\Import');