/// <summary>
/// Valides http response message and throws appropriate exceptions when errors have occured.
/// E.g. a NfieldErrorException is thrown if the response contains a NfieldErrorCode.
/// </summary>
public static HttpResponseMessage ValidateResponse(this HttpResponseMessage response)
{
if (response.IsSuccessStatusCode)
{
return(response);
}
Dictionary <string, object> httpErrorDictionary = null;
if (response.Content != null)
{
var contentString = response.Content.ReadAsStringAsync().Result;
try
{
httpErrorDictionary = JsonConvert.DeserializeObject <Dictionary <string, object> >(contentString);
}
catch (Exception)
{
// it's not json
}
}
object temp;
if (httpErrorDictionary != null && httpErrorDictionary.TryGetValue("NfieldErrorCode", out temp))
{
NfieldErrorCode nfieldErrorCode = (NfieldErrorCode)Enum.Parse(typeof(NfieldErrorCode), temp.ToString());
string message = httpErrorDictionary.TryGetValue("Message", out temp) ? temp.ToString() : response.ReasonPhrase;
throw new NfieldErrorException(response.StatusCode, nfieldErrorCode, message);
}
throw new NfieldHttpResponseException(response.StatusCode, response.ReasonPhrase);
}
public void TestValidateResponse_ServerReturnsNfieldErrorCodeAndMessage_ThrowsNfieldErrorExceptionWithErrorCodeAndMessage()
{
// Arrange
const HttpStatusCode httpStatusCode = HttpStatusCode.NotFound;
const NfieldErrorCode nfieldErrorCode = NfieldErrorCode.ArgumentIsNull;
const string message = "Message #1";
var serverResponse = new HttpResponseMessage(httpStatusCode);
var httpErrorMock = new Dictionary <string, object>()
{
{ "NfieldErrorCode", nfieldErrorCode },
{ "Message", message }
};
HttpContent content = new ObjectContent <Dictionary <string, object> >(httpErrorMock, new JsonMediaTypeFormatter());
serverResponse.Content = content;
// Act
Func <object> actCode = () => serverResponse.ValidateResponse();
// Assert
var ex = Assert.Throws <NfieldErrorException>(actCode);
Assert.Equal(ex.HttpStatusCode, httpStatusCode);
Assert.Equal(ex.NfieldErrorCode, nfieldErrorCode);
Assert.Equal(ex.Message, message);
}
/// <summary>
/// Initializes a new instance of the <see cref="NfieldHttpResponseException"/> class with a http status code, a nfield error code and an error message.
/// </summary>
/// <param name="httpStatusCode">The http status code that was sent by the server during the error.</param>
/// <param name="nfieldErrorCode">The error Nfield specific error code.</param>
/// <param name="message">A message that describes the error.</param>
public NfieldErrorException(HttpStatusCode httpStatusCode, NfieldErrorCode nfieldErrorCode, string message)
: base(httpStatusCode, message)
{
NfieldErrorCode = nfieldErrorCode;
}
/// <summary>
/// Initializes a new instance of the <see cref="NfieldHttpResponseException"/> class with a http status code, a nfield error code and an error message.
/// </summary>
/// <param name="httpStatusCode">The http status code that was sent by the server during the error.</param>
/// <param name="nfieldErrorCode">The error Nfield specific error code.</param>
/// <param name="message">A message that describes the error.</param>
public NfieldErrorException(HttpStatusCode httpStatusCode, NfieldErrorCode nfieldErrorCode, string message)
: base(httpStatusCode, message)
{
NfieldErrorCode = nfieldErrorCode;
}
