$objectManager = \Magento\Framework\App\ObjectManager::getInstance(); $myObject = $objectManager->create('MyVendor\MyModule\Model\MyObject');
$objectManager = \Magento\Framework\App\ObjectManager::getInstance(); $mockObject = $objectManager->get('Magento\Framework\TestFramework\Unit\Helper\ObjectManager')->getObject('MyVendor\MyModule\Model\MyObject');This creates a mock object of the MyObject model. The ObjectManager class is part of the Magento\Framework\TestFramework\Unit\Helper package, which is one of the many packages in the Magento framework.