How to run unit test for uniwersal windows

I'm developing app for my Rasperry Pi. I have installed windows IOT on it. Now my code is more complicated and I want to do some refactor and run tests. But I have some troubles. - When I set x84 or x64 then my application don't want to compile because have some troubles with GpioPin class - When I set ARM then unit test then tests are not visible for Visual Studio

Do you have any idea?