protected void ValidatePosition(InvoicePosition position)
{
if (string.IsNullOrWhiteSpace(position.Name))
{
throw new MissingPositionNameException();
}
if (position.NetValue <= 0)
{
throw new PositionNetValueMustBePositiveException();
}
if (position.GrossValue <= 0)
{
throw new PositionGrossValueMustBePositiveException();
}
if (position.VatRate >= 0 && position.VatRate < 1)
{
throw new WrongVatRateException(position.VatRate);
}
var grossValue = VatValueCalculator.CalculateGrossValue(position.NetValue, position.VatRate);
if (position.GrossValue != grossValue)
{
throw new WrongPositionGrossValueException(position.NetValue, position.VatRate, position.GrossValue);
}
}
public void should_calculate_proper_value()
{
const decimal netValue = 15;
const decimal vatRate = 0.23m;
var expectedValue = 18.45M;
var calculatedValue = VatValueCalculator.CalculateGrossValue(netValue, vatRate);
Assert.AreEqual(expectedValue, calculatedValue);
}
public void calculates_proper_value_for_23_percent()
{
var expectedValue = 18.45M;
const decimal vatRate = 0.23M;
// Arrange
decimal netValue = 15;
// Act
var calculatedValue = VatValueCalculator.CalculateGrossValue(netValue, vatRate);
// Assert
Assert.That(expectedValue, Is.Not.EqualTo(calculatedValue));
}
