public void Test_Can_Count_Frequencies() { var stream = CreateMockStream(); var rdr = new CSVReader(stream); CSVReaderProgram prog = new CSVReaderProgram(rdr, null); var result = rdr.ReadCSVFile(); prog.CountFrequencies(result); Assert.IsTrue(result.FirstOrDefault(x => x.FirstName == "Graham").FirstNameFrequency == 2); }