public void DeveTruncarValor()
        {
            CalculadorService service = new CalculadorService();
            var valorTruncado         = service.Truncar(200.123, 2);

            Assert.AreEqual(200.12, valorTruncado);
        }
        public void DeveCalcularJuros()
        {
            double            taxa           = 0.01;
            var               valor          = 100;
            var               meses          = 5;
            CalculadorService service        = new CalculadorService();
            var               jurosCalculado = service.CalcularJuros(valor, taxa, meses);

            Assert.AreEqual(105.10, jurosCalculado);
        }