Solid testing is vital to any development effort if you want stable software that does what the customer expects the software to do. Visual Studio Team Systems' testing functionality is powerful, but it's not the end-all for every testing task. Open source tools can help you get more out of your testing by enabling you to offload acceptance tests to your customers, simulate services you don't have access to, debug tests in Visual Studio's IDE, and automate ASP.NET web form testing. A wealth of other tools allows you to speed up your test execution and get more information from your tests. Learn how tools such as Watir, TestDriven.NET, Rhino.Mocks, and Fitnesse.NET can boost your testing accuracy and productivity.

Jim Holmes is a Principal Consultant with NuSoft Solutions. He has two decades or so of experience in the IT domain scattered across a wide range of disciplines including telephone hotline support, network management, systems analysis, and software development. He's the founder of the Dayton .NET Developers Group and has written regular columns for VisualStudioHacks.com. He's also the co-author of "Windows Developer Power Tools," from O'Reilly publications. In his spare time he can be found hiking with his family, roasting coffee, working in his rose garden, or trying to find a quiet corner in the house where he can take a nap.