ProcessInvoker.cs

internal class ProcessInvoker
{
    /// <summary>
    /// Invokes the host process for test service
    /// </summary>
    public static void InvokeDummyService()
    {
        var path = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);

        ProcessStartInfo info = new ProcessStartInfo(Path.Combine(path, "DummyService.exe"));

        info.UseShellExecute = true;
        info.WorkingDirectory = path;

        var process = Process.Start(info);
        // This is what would attach the process to current VS debugger
        AttachDebugger.ToProcess(process.Id);
    }

    /// <summary>
    /// Kills the process of service host
    /// </summary>
    public static void KillDummyService()
    {
        Process.GetProcessesByName("DummyService").ToList().ForEach(x => x.Kill());
    }
}