public void Can_output_matched_records_as_csv_in_date_order()
        {
            // Arrange
            var file_io  = new FileIO <BankRecord>(new FakeSpreadsheetRepoFactory(), _csv_file_path, "BankIn-formatted-date-only");
            var csv_file = new CSVFile <BankRecord>(file_io);

            csv_file.Load();
            foreach (var record in csv_file.Records)
            {
                record.Matched = true;
            }

            // Act
            List <string> csv_lines = csv_file.Matched_records_as_csv();

            // Assert
            Assert.AreEqual("01/02/2017,£350.00,x,ABC,\"ZZZThing3\",,,,,", csv_lines[0]);
            Assert.AreEqual("01/03/2017,£350.00,x,ABC,\"ZZZThing2\",,,,,", csv_lines[1]);
            Assert.AreEqual("24/03/2017,£200.12,x,PCL,\"ZZZSpecialDescription001\",,,,,", csv_lines[2]);
            Assert.AreEqual("01/04/2017,£261.40,x,PCL,\"ZZZSpecialDescription005\",,,,,", csv_lines[3]);
            Assert.AreEqual("03/04/2017,£350.00,x,ABC,\"ZZZThing1\",,,,,", csv_lines[4]);
        }