public async Task <TaxCalculationResponse> Calculate(GetCalculationModel request)
{
if (request == null)
{
throw new NullReferenceException();
}
if (string.IsNullOrEmpty(request.ClientId))
{
throw new ArgumentNullException(nameof(request.ClientId));
}
if (string.IsNullOrEmpty(request.ToCountry))
{
throw new ArgumentNullException(nameof(request.ToCountry));
}
if (string.IsNullOrEmpty(request.ToState))
{
throw new ArgumentNullException(nameof(request.ToState));
}
if (string.IsNullOrEmpty(request.ToZip) && request.ToCountry == "US" || string.IsNullOrEmpty(request.ToZip) && request.ToCountry == "CA")
{
throw new ArgumentNullException(nameof(request.ToZip));
}
var mapped = mapper.Map <TaxCalculationRequest>(request);
var response = await taxRepository.Post <TaxCalculationRequest, TaxCalculationResponse>(mapped);
return(response);
}
public void Calculate_ToCountry_CA_Valid_Response_Expected()
{
var taxService = new TaxService(taxRepoMock.Object, mapperMock.Object);
var request = new GetCalculationModel
{
ClientId = "1",
ToCountry = "US",
ToState = "ToState",
ToZip = "30203"
};
taxRepoMock.Setup(x => x.Get <TaxCalculationRequest, TaxCalculationResponse>(It.IsAny <TaxCalculationRequest>())).ReturnsAsync(() =>
{
return(new TaxCalculationResponse
{
Tax = new Tax
{
Rate = 30
}
});
});
var result = taxService.Calculate(request);
Assert.NotNull(result);
}
public void Calculate_Empty_ClientId_Expected_Argument_Null_Exception()
{
var taxService = new TaxService(taxRepoMock.Object, mapperMock.Object);
var request = new GetCalculationModel
{
ClientId = string.Empty
};
Assert.That(() => taxService.Calculate(request), Throws.ArgumentNullException);
}
public void Calculate_Null_ToCountry_Expected_Argument_Null_Exception()
{
var taxService = new TaxService(taxRepoMock.Object, mapperMock.Object);
var request = new GetCalculationModel
{
ClientId = "1",
ToCountry = null
};
Assert.That(() => taxService.Calculate(request), Throws.ArgumentNullException);
}
public void Calculate_Empty_ToZip_And_ToCountry_Is_CA_Expected_Argument_Null_Exception()
{
var taxService = new TaxService(taxRepoMock.Object, mapperMock.Object);
var request = new GetCalculationModel
{
ClientId = "1",
ToCountry = "CA",
ToState = "ToState",
ToZip = string.Empty
};
Assert.That(() => taxService.Calculate(request), Throws.ArgumentNullException);
}