public void GetProvider_ReturnsNull_ForCustomProblemDetails()
{
// Arrange
var providerFactory = new ProblemDetailsWrapperProviderFactory();
var instance = new CustomProblemDetails();
var context = new WrapperProviderContext(instance.GetType(), isSerialization: true);
// Act
var provider = providerFactory.GetProvider(context);
// Assert
Assert.Null(provider);
}
public void Custom_Problem_Details_With_Extensions()
{
var value = new CustomProblemDetails
{
Prop1 = "one",
Prop2 = 2,
Extensions =
{
{ "Prop3", "three" },
{ "Prop4", 4 }
}
};
const string expected = "{\"Prop1\":\"one\",\"Prop2\":2,\"Prop3\":\"three\",\"Prop4\":4}";
Serialize(value).Should().Be(expected);
}
public void Cannot_Fully_Deserialize_Custom_ProblemDetails_With_Extensions()
{
// given
var problem = New.ProblemDetails.CustomProblemDetailsWithExtensions();
var json = JsonProblemDetailsConverter.Serialize(problem);
// when
var actual = JsonProblemDetailsConverter.Deserialize <CustomProblemDetails>(json);
// then
var expected = new CustomProblemDetails
{
IntField = problem.IntField,
StringField = problem.StringField
};
problem.CopyStandardFieldsTo(expected);
actual.Should().BeEquivalentTo(expected);
}
public void Can_Deserialize_ProblemDetails_With_Extensions_To_CustomProblemDetails()
{
// given
var problem = New.ProblemDetails.ProblemDetailsWithExtensions();
var json = JsonProblemDetailsConverter.Serialize(problem);
// when
var actual = JsonProblemDetailsConverter.Deserialize <CustomProblemDetails>(json);
// then
var expected = new CustomProblemDetails
{
IntField = (int)problem.Extensions["intField"],
StringField = (string)problem.Extensions["stringField"]
};
problem.CopyStandardFieldsTo(expected);
actual.Should().BeEquivalentTo(expected);
}
private static async Task WriteResponse(HttpContext httpContext, bool includeDetails, IEnumerable <IExceptionHandler> exceptionHandlers)
{
// Try and retrieve the error from the ExceptionHandler middleware
var exceptionDetails = httpContext.Features.Get <IExceptionHandlerFeature>();
var ex = exceptionDetails?.Error;
// Should always exist, but best to be safe!
if (ex != null)
{
CustomProblemDetails?problemDetails = null;
if (exceptionHandlers != null)
{
foreach (var exceptionHandler in exceptionHandlers)
{
if ((problemDetails = exceptionHandler.Intercept(ex)) != null)
{
break;
}
}
}
// ProblemDetails has it's own content type
httpContext.Response.ContentType = "application/problem+json";
if (problemDetails == null)
{
// Get the details to display, depending on whether we want to expose the raw exception
var title = includeDetails ? "An error occured: " + ex.Message : "An error occured";
problemDetails = new CustomProblemDetails
{
Status = 500,
Title = title
};
}
if (problemDetails.Detail == null)
{
problemDetails.Detail = includeDetails ? ex.ToString() : null;
}
httpContext.Response.StatusCode = problemDetails.Status ?? 500;
// This is often very handy information for tracing the specific request
var traceId = Activity.Current?.Id ?? httpContext?.TraceIdentifier;
if (traceId != null)
{
problemDetails.Extensions["traceId"] = traceId;
}
//Serialize the problem details object to the Response as JSON (using System.Text.Json)
if (httpContext != null)
{
var stream = httpContext.Response.Body;
JsonSerializerOptions options = new()
{
PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
WriteIndented = true,
IgnoreNullValues = true
};
options.Converters.Add(new JsonStringEnumConverter());
await JsonSerializer.SerializeAsync(stream, problemDetails,
options : options
);
}
}
}
}
