Android is one of the most popular operating system in the world and there are hundreds of millions , if not billions, using android device as their primary smart phone at any given time. The massive popularity of android is due to the very easy customizability of the operating system which you can arrange or change according to what you want it to look like and perform and same goes for the apps that you install on your android device, they can be very easily controlled as well and that is what Test DPC helps you do.
Android developers are in great many number and they create apps that are designed specifically designed for the needs of all android users and Test DPC is the app which lets them test any app, how it will perform in a given device which has certain restrictions on the usage of memory or data.
Test DPC is an app that is used by android developers and what it basically does is that it lets you mentor and restrict the application recourses on the device level so you can better understand the function of an app, how it will work in a device which has certain restrictions. IF you are not an android app developer yourself then I would not recommend downloading and using the Test DPC app to restrict the usage and permissions of any app on your phone because you can damage your phone and may need to seek help. If you do use the Test DPC app to restrict resources of an app then you will need to uninstall the app and reinstall it if you wish to continue using it on your phone and please keep in mind that you should not use the Test DPC app with real world data while testing.