public void Using_Relative_Folder_Name_And_File_Should_Return_Relative_Path()
        {
            string folder = @"C:\myfolder";
            string file   = "myfile.txt";

            string expected = String.Format("{0}{1}{2}", folder, Path.DirectorySeparatorChar, file);

            Assert.AreEqual(expected, provider.CreateFilePath(folder, file));
        }