public void NotZeroOrLess()
        {
            ProgramController controller = new ProgramController();

            Assert.Null(controller.Apply("11111111111", "0", "01/01/2019"));
            Assert.Null(controller.Apply("11111111111", "-10", "01/01/2019"));
        }
        public void NoWithdrawBeforeApplication()
        {
            ProgramController controller = new ProgramController();

            controller.Apply("11111111111", "50", "02/01/2019");
            Assert.Null(controller.Withdraw("11111111111", "01/01/2019"));
        }
        public void IRTest1()
        {
            ProgramController controller = new ProgramController();

            controller.Apply("11111111111", "50", "01/01/2019");
            float[] f            = controller.Withdraw("11111111111", "01/01/2020");
            float   IRPercentage = (f[1] / f[2]) * 100;

            Assert.Equal(22.5f, Math.Round(IRPercentage, 3));
        }