public void When_SimpleInterestIs10_On1Cards_InterestIs10()
        {
            Card visaCard = new VisaCard("Visa1", 100, .1);
            FullPersonInterestCalculator interestCalculator = new FullPersonInterestCalculator(new SimpleInterestCalculator());

            Card newVisa = interestCalculator.ComputeTotalInterestForCard(visaCard, 1);

            Assert.That(newVisa.Interest, Is.EqualTo(10).Within(.1));
        }