public void throws_when_transformer_is_not_defined_for_a_type_and_no_default_transformer_is_defined()
{
var transformer = new ExceptionTransformer();
var exception = Assert.Throws<ApplicationException>(() => transformer.Transform(new Exception()));
exception.Message.ShouldContain("No tranformer is defined for type \"Exception\"");
}
public void falls_back_to_default_handler()
{
const string title = "An error occurred.";
const string message = "An error occurred. Please contact help desk.";
const HttpStatusCode statusCode = HttpStatusCode.InternalServerError;
var transformer = new ExceptionTransformer
{
DefaultTransformer = e => new ErrorResponse(statusCode, title, message)
};
var errorResponse = transformer.Transform(new NullReferenceException());
errorResponse.Title.ShouldEqual(title);
errorResponse.Message.ShouldEqual(message);
errorResponse.HttpStatusCode.ShouldEqual(statusCode);
}
public void transforms_given_exception_to_error_response()
{
const string title = "Foo title";
const string message = "Foo message";
const HttpStatusCode statusCode = HttpStatusCode.NotFound;
var transformer = new ExceptionTransformer();
transformer.AddTransformer<ArgumentException>(e =>
{
return new ErrorResponse(statusCode, title, e.Message);
});
var errorResponse = transformer.Transform(new ArgumentException(message));
errorResponse.Title.ShouldEqual(title);
errorResponse.Message.ShouldEqual(message);
errorResponse.HttpStatusCode.ShouldEqual(statusCode);
}
public void Configuration(IAppBuilder appBuilder)
{
var config = new HttpConfiguration();
config.MapHttpAttributeRoutes();
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "{controller}/{id}",
defaults: new { controller = "Home", id = RouteParameter.Optional }
);
config.Formatters.Clear();
config.Formatters.Add(new HyperfriendlyJsonMediaTypeFormatter());
var transformer = new ExceptionTransformer{ DefaultTransformer = e => new ErrorResponse(HttpStatusCode.InternalServerError, "Error!", "Something bad happened!")};
transformer.AddTransformer<OhNoException>(e => new ErrorResponse(HttpStatusCode.BadRequest, e.Shout, e.Shout + " Something bad happened!"));
config.Services.Replace(typeof(IExceptionHandler), new HyperfriendlyExceptionHandler(transformer));
appBuilder.UseWebApi(config);
}
/// <summary>
/// Initializes the <see cref="T:BoDi.ObjectContainer"/> class.
/// </summary>
static ObjectContainer()
{
exceptionTransformer = new ExceptionTransformer();
containerFactory = new BoDiFlexDiContainerFactory();
}
public HyperfriendlyExceptionHandler(ExceptionTransformer transformer)
{
_transformer = transformer;
}
