async public Task <TaxRatesResponse> GetTaxRatesForLocation(TaxRatesRequest taxRateRequest)
{
if (taxRateRequest == null)
{
throw new ArgumentNullException("taxRateRequest");
}
if (string.IsNullOrWhiteSpace(taxRateRequest.Zip))
{
throw new ArgumentException("Param Zip is required for US.", nameof(taxRateRequest));
}
try
{
var taxRateRequestUri = BuildTaxRateRequestUri(taxRateRequest);
var taxRateJarResponse = await TaxJarHttpClientProvider.GetAsync <TaxRatesJarResponse>(taxRateRequestUri, Constants.API_KEY);
return(taxRateJarResponse.Rate);
}
catch (Exception ex)
{
throw new TaxCalculatorException(ex.Message);
}
}
private string BuildTaxRateQueryString(TaxRatesRequest taxRateRequest)
{
var queryString = System.Web.HttpUtility.ParseQueryString(string.Empty);
if (!string.IsNullOrWhiteSpace(taxRateRequest.Country))
{
queryString.Add("country", taxRateRequest.Country);
}
if (!string.IsNullOrWhiteSpace(taxRateRequest.State))
{
queryString.Add("state", taxRateRequest.State);
}
if (!string.IsNullOrWhiteSpace(taxRateRequest.City))
{
queryString.Add("city", taxRateRequest.City);
}
if (!string.IsNullOrWhiteSpace(taxRateRequest.Street))
{
queryString.Add("street", taxRateRequest.Street);
}
// Since the actual object is an HttpValueCollection, calling ToString will format the collection as a URL-encoded query string.
return(queryString.ToString());
}
public async Task GetTaxRate_Valid_EmptyZip_Country_City_US()
{
// arrange
var taxRateRequest = new TaxRatesRequest()
{
Zip = "",
Country = "US",
City = "Santa Monica"
};
// act
await taxCalculator.GetTaxRatesForLocation(taxRateRequest);
}
public async Task GetTaxRate_Valid_Zip_Country_City_Street_US()
{
// arrange
var taxRateRequest = new TaxRatesRequest()
{
Zip = "98109",
Country = "US",
City = "Seattle",
Street = "400 Broad St"
};
var expectedCountryRate = "0.0";
// act
var taxRateResponse = await taxCalculator.GetTaxRatesForLocation(taxRateRequest);
// assert
Assert.AreEqual(expectedCountryRate, taxRateResponse.CountryRate);
}
public async Task GetTaxRate_Valid_Zip_Country_City_CA()
{
// arrange
var taxRateRequest = new TaxRatesRequest()
{
Zip = "V5K0A1",
Country = "CA",
City = "Vancouver"
};
var expectedCity = "Vancouver";
var expectedCombinedRate = "0.12";
// act
var taxRateResponse = await taxCalculator.GetTaxRatesForLocation(taxRateRequest);
// assert
Assert.AreEqual(expectedCity, taxRateResponse.City);
Assert.AreEqual(expectedCombinedRate, taxRateResponse.CombinedRate);
}
public async Task GetTaxRate_Valid_Zip_Country_City_US()
{
// arrange
var taxRateRequest = new TaxRatesRequest()
{
Zip = "90404",
Country = "US",
City = "Santa Monica"
};
var expectedCombinedRate = "0.1025";
var expectedStateRate = "0.0625";
var expectedZip = "90404";
// act
var taxRateResponse = await taxCalculator.GetTaxRatesForLocation(taxRateRequest);
// assert
Assert.AreEqual(expectedCombinedRate, taxRateResponse.CombinedRate);
Assert.AreEqual(expectedStateRate, taxRateResponse.StateRate);
Assert.AreEqual(expectedZip, taxRateResponse.Zip);
}
private string BuildTaxRateRequestUri(TaxRatesRequest taxRateRequest)
{
string taxRateQueryString = BuildTaxRateQueryString(taxRateRequest);
return($"rates/{taxRateRequest.Zip}?{taxRateQueryString}");
}
async public Task <TaxRatesResponse> GetTaxRatesForLocation(TaxRatesRequest taxRateRequest)
{
throw new NotImplementedException();
}
async public Task <TaxRatesResponse> GetTaxRatesForLocation(TaxRatesRequest taxRateRequest)
{
// Do some businees logic here
return(await this._taxCalculator.GetTaxRatesForLocation(taxRateRequest));
}