[InlineData("Visa", "MC", null)] //Person 2

        public void Case3_ShouldReturnWalletInterest(string Card1, string Card2, string Card3)
        {
            double expected = CardInterestCalculation.CardCal(Card1) + CardInterestCalculation.CardCal(Card2) + CardInterestCalculation.CardCal(Card3);

            double actual = ClearentTestCases.CaseWithCards(Card1, Card2, Card3);

            Assert.Equal(expected, actual);
        }
        // Testes the single Card Interest method
        public void CardCal_ShouldReturnCardInterest()
        {
            double expected = 1;

            double actual = CardInterestCalculation.CardCal("Discover");

            Assert.Equal(expected, actual);
        }