public void TestIsValidVAT()
{
// before we can compute the tax, we need to check the VAT
// with the EU comission's API. Note, this service is not
// working 24/7, so we may need to check the VAT serveral times.
Assert.True(VATService.IsValidVAT("SE559116174901").IsValid);
}
public void TestCalculateVAT()
{
// if it's a Swedish company (or any other EU member state)
// but no VAT is given, then the tax should be 25%.
Assert.Equal(2500, VATService.CalculateVAT("SE", null).Tax);
// if it's a Swedish company (or any other EU member state)
// and a valid VAT is provided, then no tax is applied and
// it's instead the responsibility of the buyer to pay it
// (reversed tax liability)
Assert.Equal(0, VATService.CalculateVAT("SE", "valid VAT").Tax);
// if it's a US company (or any other non-EU country), then
// it's export and no tax should be applied.
Assert.Equal(0, VATService.CalculateVAT("US", null).Tax);
}
public void TestIn()
{
vatService = Substitute.For <VATService>();
}