Can some one tell me what this asset is used for?
I am havign a hard time figuring out what it is 
This will help you understand; Unit testing - Wikipedia
It’s free, so I suggest downloading it and looking at the example scenes. Basically, it is a package containing NUnit and NSubstitute for unit tests, a unit test runner that runs in the Unity Editor, and some Assert components you can stick on game objects for integration testing.
It’s a collection of tools you can use for automation testing of your game. Read more about the latest version here: http://blogs.unity3d.com/2014/03/12/unity-test-tools-1-2-have-been-released/