2.3. First steps with NUnit
As with any new tool, you’ll need to install it first. Because NUnit is open source and freely downloadable, this task will be rather simple. Then you’ll see how to start writing a test with NUnit, use the built-in attributes that NUnit ships with, and run your test and get some real results.
2.3.1. Installing NUnit
The best and easiest way to install NUnit is by using NuGet—a free extension to Visual Studio that allows you to search, download, and install references to popular libraries from within Visual Studio with a few clicks or a simple command text.
I highly suggest you install NuGet by going to the Tools > Extension Manager menu in Visual Studio, clicking Online Gallery, and installing the top-ranked NuGet ...