I have a few tests that need to be fed with external data from excel files. The files are included in the test project, and in Visual Studio, I have edited the test settings fil
I get round this by adding my data files (in my case usually XML) as embedded resources and I extract them from the test assembly.
[TestInitialize]
public void InitializeTests()
{
var asm = Assembly.GetExecutingAssembly();
this.doc = new XmlDocument();
this.doc.Load(asm.GetManifestResourceStream("TestAssembly.File.xml"));
}