Running Gallio tests within Visual Studio

While using Gallio for performing Unit Tests within Visual Studio, I have noticed that some times you can’t run Unit Tests, or it says that no tests available, with thanks to Lee, he pointed me to a simple fix

Visual Studio can be used to run your tests in process, with the debugger. In order for a project to be “testable”, you’ll need to make sure it has the following in the csproj: