In 2008 I wrote a post Running Fitnesse.NET tests using MSTest.  Recently I had need to us this technique on a VS2010 project, and as is so often the issue the code that worked then does not seem to work now. All I can assume is that the Fitnesse API had altered, but I thought I was using the same assemblies!

So I pulled down the code from http://sourceforge.net/projects/fitnessedotnet/ and had a poke about. Basically I seemed to be using the command line switches wrong. The listing below shows what I found is the working usage:

\[TestMethod\]
public void WorkFlowSwitchOnName\_DataViaFitnesse\_Success()
    {
    fit.Runner.FolderRunner runner = new fit.Runner.FolderRunner(new fit.Runner.ConsoleReporter());
        var errorCount = runner.Run(new string\[\] {
            "-i",@"WF Workflow", // the directory that holds the HTM test files
                "-a",@"TestProject.dll",  //we have the fit fascard in this assembly
            "-o",@"results"}); // the directory the results are dumped into as HTML
        // fit can fail silently giving no failures as no test are run, so check for exceptions
    Assert.AreEqual(false, Regex.IsMatch(runner.Results, "^0.+?0.+?0.+?0.+?$"), "No tests appear to have been run");
        // look for expected errors
    Assert.AreEqual(0, errorCount, runner.Results);
}

The –i option is the one that was wrong. I had been specifying a single HTM file. What I should have done was specify a directory that contains one or more HTM files. I handled this as a sub directory in my project with its contents set to copy to the output directory.

Once I made these edits I had my tests running again as expect.