public void If_main_amount_already_positive_then_making_it_positive_has_no_effect()
        {
            // Arrange
            var    cred_card1_record   = new CredCard1Record();
            var    positive_amount     = 23.23;
            var    csv_positive_amount = positive_amount * -1;
            string csv_line            = String.Format("17/02/2017,23/11/2018,22223333,\"ANY STORE 8888        ANYWHERE\",{0}", csv_positive_amount);

            cred_card1_record.Load(csv_line);

            // Act
            cred_card1_record.Make_main_amount_positive();

            // Assert
            Assert.AreEqual(positive_amount, cred_card1_record.Amount);
        }
        public void Can_make_main_amount_positive()
        {
            // Arrange
            var    cred_card1_record   = new CredCard1Record();
            var    negative_amount     = -23.23;
            var    csv_negative_amount = negative_amount * -1;
            string csv_line            = String.Format("17/02/2017,23/11/2018,22223333,\"ANY STORE 8888        ANYWHERE\",{0}", csv_negative_amount);

            cred_card1_record.Load(csv_line);

            // Act
            cred_card1_record.Make_main_amount_positive();

            // Assert
            Assert.AreEqual(negative_amount * -1, cred_card1_record.Amount);
        }