Magento 2 with the Unit test for a module, Avoid direct use of Helper\ObjectManager in a Unit test.
Many developers used the native Magento\Framework\TestFramework\Unit\Helper\ObjectManager class for creating mock and objects.
Magento 2: Get Product collection filter using Service contract.
When you are looking for a product collection filter in Magento 2, the first thing in your mind come to go with the ProductFactory approach.
With ProductFactory way, When you do use a Collection, use a Factory class to instantiate the Collection, as the getCollection() method is deprecated.
How to delete cookie in Magento 2?
Magento 2, You can delete the cookie using Magento’s Own Magento\Framework\Stdlib\CookieManagerInterface interface class.
You can delete cookie using deleteCookie() function from CookieManagerInterface Interface.