public async Task EndMiddleware_DoesNotThrow_IfExceptionHandled()
{
// Arrange
var services = new ServiceCollection();
var appBuilder = new ApplicationBuilder(services.BuildServiceProvider());
var pipelineBuilderService = new MiddlewareFilterBuilder(new MiddlewareFilterConfigurationProvider())
{
ApplicationBuilder = appBuilder,
};
Pipeline1.ConfigurePipeline = ab =>
{
ab.Use((ctx, next) =>
{
return(next(ctx));
});
};
var middlewareFilterFeature = new MiddlewareFilterFeature
{
ResourceExecutionDelegate = () =>
{
var actionContext = new ActionContext(
new DefaultHttpContext(),
new RouteData(),
new ActionDescriptor(),
new ModelStateDictionary());
var context = new ResourceExecutedContext(actionContext, new List <IFilterMetadata>())
{
Exception = new InvalidOperationException("Error!!!"),
ExceptionHandled = true,
};
return(Task.FromResult(context));
},
};
var features = new FeatureCollection();
features.Set <IMiddlewareFilterFeature>(middlewareFilterFeature);
var httpContext = new DefaultHttpContext(features);
// Act
var pipeline = pipelineBuilderService.GetPipeline(typeof(Pipeline1));
// Assert
Assert.NotNull(pipeline);
// Does not throw.
await pipeline(httpContext);
}
public Task OnResourceExecutionAsync(ResourceExecutingContext context, ResourceExecutionDelegate next)
{
var httpContext = context.HttpContext;
// Capture the current context into the feature. This will later be used in the end middleware to continue
// the execution flow to later MVC layers.
// Example:
// this filter -> user-middleware1 -> user-middleware2 -> the-end-middleware -> resource filters or model binding
var feature = new MiddlewareFilterFeature()
{
ResourceExecutionDelegate = next,
ResourceExecutingContext = context
};
httpContext.Features.Set <IMiddlewareFilterFeature>(feature);
return(_middlewarePipeline(httpContext));
}
public async Task EndMiddleware_PropagatesFullExceptionInfo_ToEarlierMiddleware()
{
// Arrange
var services = new ServiceCollection();
var appBuilder = new ApplicationBuilder(services.BuildServiceProvider());
var pipelineBuilderService = new MiddlewareFilterBuilder(new MiddlewareFilterConfigurationProvider())
{
ApplicationBuilder = appBuilder,
};
Pipeline1.ConfigurePipeline = ab =>
{
ab.Use((ctx, next) =>
{
return(next(ctx));
});
};
var middlewareFilterFeature = new MiddlewareFilterFeature
{
ResourceExecutionDelegate = () =>
{
ExceptionDispatchInfo exceptionInfo;
try
{
// Create a small stack trace.
throw new InvalidOperationException("Error!!!");
}
catch (Exception ex)
{
exceptionInfo = ExceptionDispatchInfo.Capture(ex);
}
var actionContext = new ActionContext(
new DefaultHttpContext(),
new RouteData(),
new ActionDescriptor(),
new ModelStateDictionary());
var context = new ResourceExecutedContext(actionContext, new List <IFilterMetadata>())
{
ExceptionDispatchInfo = exceptionInfo,
};
return(Task.FromResult(context));
},
};
var features = new FeatureCollection();
features.Set <IMiddlewareFilterFeature>(middlewareFilterFeature);
var httpContext = new DefaultHttpContext(features);
// Act
var pipeline = pipelineBuilderService.GetPipeline(typeof(Pipeline1));
// Assert
Assert.NotNull(pipeline);
var exception = await Assert.ThrowsAsync <InvalidOperationException>(() => pipeline(httpContext));
Assert.Null(exception.InnerException);
Assert.Equal("Error!!!", exception.Message);
var stack = exception.StackTrace;
Assert.Contains(typeof(MiddlewareFilterBuilder).FullName, stack);
Assert.Contains(typeof(MiddlewareFilterBuilderTest).FullName, stack);
Assert.Contains(nameof(EndMiddleware_PropagatesFullExceptionInfo_ToEarlierMiddleware), stack);
}