public function testAddAndGetService()
{
$new_service = $this->getMockBuilder(InterfaceService::class)->getMock();
$this->object->addService('test_service', $new_service);
$this->assertSame($new_service, $this->object->getService('test_service'));
$this->assertInstanceOf(InterfaceService::class, $this->object->getService('test_service'));
}