I think you need to read about projects and solutions: http://msdn.microsoft.com/en-us/library/ee817674.aspx

And after that it all becomes more clear: Have one solution, inside of that solution create a project for your application and a project for your unit-tests. In test-project add reference to the testing framework of your choice and a reference to your application-project. 

This way your application does not know about your tests and compiled into one assembly. At the same time your tests depend on your application, but compiled into another assembly, which can be used by your test-runner GUI/CI or whatever else you use.

And to answer your next question, for test-project you need to choose project type of "Library" (console application will work as well if you like)

C# Test Assembly
While I was watching Episode 322 of Naruto Shippuden, I found what I guess is a mistake:

First look at the picture:



Since Madara came, he was using only Sharingan, and this can be seen until 07:43 in the picture, while he was dodging Gaara's sand attacks. However, when Naruto was above him with an Odama Rasengan, Madara suddenly could be seen with the Rinnegan on his eyes (07:45), and nobody noticed it like if it was a mistake. It should have been normal Sharingan.

Then, at 08:17, Madara was using the Mangekyou Sharingan, since he activated it after Naruto's attack to invoke the Susanoo.

And after that, at around 10:04, Madara was targeted by a Rasenshuriken, hence he had to activate the Rinnegan, and that was at 10:06. It was the first time that he did it since he came to life with Edo Tensei, and that could be confirmed from everybody's reaction when they saw his Rinnegan at around 10:56 ("Why does he have the Rinnegan?").

Was it a mistake that they drew Madara with the Rinnegan at 07:45?
