This section provides a ‘Quickstart’ guide to using TestDriven.NET any version of Microsoft Visual Studio .NET Test Driven Development is the practice of writing unit tests for your code before you actually write that code. By writing a test and then writing the code to make that test pass you have a much better idea of what the goal and purpose of your code is. Test Driven Development also encourage complete code coverage, which not only increases the quality of your code, but also allows you to refactor the internals of a method or class and quickly and easily test the outside interface of the object.

TestDriven.NET is a unit testing add-in for Visual Studio. It was developed for a number of years under the name NUnitAddIn. It supports multiple unit testing frameworks including NUnit, MbUnit, csUnit and MS Team System and is compatible with all versions of Visual Studio .NET. It is available in free and (in the future)professional versions. Installing

TestDriven.NET can be installed using an administrator or limited user account. By default it will install for just the current user. Because limited users don’t have write access to the ‘Program Files’ folder, a limited user installation will install files in user’s ‘Application Data\TestDriven.NET’ folder. An administrator installation will install files in the ‘Program Files\TestDriven.NET’ folder. These defaults can be changed by selecting ‘Custom’ on the ‘Choose Setup Type’ page.

TestDriven.NET is packaged with functional versions of the NUnit and MbUnit unit testing frameworks. It also includes an adaptor for executing Visual Studio Team System unit tests when available. These will be installed to subdirectories inside the ‘TestDriven.NET’ directory as shown in Figure 1…

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