public void ASimpleExceptionShouldSerializeToXmlUsingDataContractSerializer()
{
// Arrange
var exception = new BasicApiProblemException(
HttpStatusCode.Forbidden,
"You do not have enough credit.",
"http://example.com/probs/out-of-credit",
"Your current balance is 30, but that costs 50.");
const string expected =
@"
<problem xmlns=""urn:web-api-problem"">
<problemType>http://example.com/probs/out-of-credit</problemType>
<title>You do not have enough credit.</title>
<detail>Your current balance is 30, but that costs 50.</detail>
</problem>";
// Act
var apiProblemType = exception.ApiProblem.GetType();
var dataContractSerializer = new DataContractSerializer(apiProblemType);
string serialized;
using (var memStream = new MemoryStream())
{
dataContractSerializer.WriteObject(memStream, exception.ApiProblem);
var data = memStream.ToArray();
serialized = Encoding.UTF8.GetString(data);
}
// Assert
XmlDiffAssert.DiffXmlStrict(serialized, expected);
}
public void TestContentNegotiation(string contentType, string expectedResponseContentType)
{
// Arrange
var exception = new BasicApiProblemException(HttpStatusCode.BadRequest, "", "");
var filter = new ResponseExceptionFilterAttribute(ResponseExceptionFormat.Negotiate);
var executedContext = CreateContext(exception, r => r.Headers.Add("Accept", contentType));
// Act
filter.OnException(executedContext);
// Assert
executedContext.Response.StatusCode.Should().Be(HttpStatusCode.BadRequest);
executedContext.Response.Content.Headers.ContentType.ToString().Should().Be(expectedResponseContentType);
}
private static HttpActionExecutedContext CreateContext(BasicApiProblemException exception, Action<HttpRequestMessage> setRequest = null)
{
var config = new HttpConfiguration();
var httpRouteData = new HttpRouteData(new HttpRoute());
var request = new HttpRequestMessage(HttpMethod.Get, "http://example.com");
request.Properties.Add(HttpPropertyKeys.HttpConfigurationKey, new HttpConfiguration());
if (setRequest != null)
{
setRequest(request);
}
var controllerContext = new HttpControllerContext(config,
httpRouteData,
request);
var context = new HttpActionContext(controllerContext, new ReflectedHttpActionDescriptor());
var executedContext = new HttpActionExecutedContext(context, exception);
return executedContext;
}
public void ASimpleExceptionShouldSerializeToJson()
{
// Arrange
var exception = new BasicApiProblemException(
HttpStatusCode.Forbidden,
"You do not have enough credit.",
"http://example.com/probs/out-of-credit",
"Your current balance is 30, but that costs 50.");
const string expected =@"
{
""problemType"": ""http://example.com/probs/out-of-credit"",
""title"": ""You do not have enough credit."",
""detail"": ""Your current balance is 30, but that costs 50."",
}";
// Act
var serialized = exception.Serialize("application/json");
// Assert
serialized.ShouldBeJson(expected);
}
public void ASimpleExceptionShouldSerializeToXml()
{
// Arrange
var exception = new BasicApiProblemException(
HttpStatusCode.Forbidden,
"You do not have enough credit.",
"http://example.com/probs/out-of-credit",
"Your current balance is 30, but that costs 50.");
const string expected =
@"<?xml version=""1.0"" encoding=""utf-8""?>
<problem xmlns=""urn:web-api-problem"">
<problemType>http://example.com/probs/out-of-credit</problemType>
<title>You do not have enough credit.</title>
<detail>Your current balance is 30, but that costs 50.</detail>
</problem>";
// Act
var serialized = exception.Serialize("application/xml");
// Assert
XmlDiffAssert.DiffXmlStrict(serialized, expected);
}
