public void NetPresentValueShouldThrowExceptionWithNullParameters()
        {
            //Act
            var exception = Record.Exception(() => FinancialCalculations.NetPresentValue(1.4, null));

            //Assert
            exception.Should().NotBeNull();
        }
        public void NetPresentValueShouldCalculatedWithoutError()
        {
            //Act
            var exception = Record.Exception(() => FinancialCalculations.NetPresentValue(1.4, new[] { 1.2, 2 }));

            //Assert
            exception.Should().BeNull();
        }