public void Global_Middleware_Executes()
{
_mockInteractor = Substitute.For <IInteractor <MockUseCase, IMockOutputPort> >();
_handlerResolver.ResolveInteractor <MockUseCase, IMockOutputPort>(Arg.Any <MockUseCase>()).Returns(_mockInteractor);
var globalMiddleware = Substitute.For <IMiddleware>();
globalMiddleware.Execute(
Arg.Any <MockUseCase>(),
d => Task.FromResult(new UseCaseResult(true)),
Arg.Any <CancellationToken>())
.ReturnsForAnyArgs(x => new UseCaseResult(true))
.AndDoes(x =>
{
x.Arg <Func <MockUseCase, Task <UseCaseResult> > >().Invoke(x.Arg <MockUseCase>());
});
IReadOnlyList <IMiddleware> globalPipeline = new List <IMiddleware> {
globalMiddleware
};
_handlerResolver.ResolveGlobalMiddleware().Returns(globalPipeline);
_interactorHub.Execute(new MockUseCase(), (IMockOutputPort) new MockOutputPort());
globalMiddleware.Received().Execute(
Arg.Any <MockUseCase>(),
Arg.Any <Func <MockUseCase, Task <UseCaseResult> > >(),
Arg.Any <CancellationToken>());
}
public Task <UseCaseResult> Execute <TUseCase, TOutputPort>(TUseCase useCase, TOutputPort outputPort, CancellationToken cancellationToken)
where TUseCase : IUseCase <TOutputPort>
{
if (useCase == null)
{
throw new UseCaseNullException("The usecase cannot be null");
}
if (outputPort == null)
{
throw new OutputPortNullException("The output port cannot be null");
}
var interactor = _resolver.ResolveInteractor <TUseCase, TOutputPort>(useCase);
var pipeline = new List <IMiddleware <TUseCase, TOutputPort> >();
pipeline.AddRange(_resolver.ResolveGlobalMiddleware().Select(x => new GlobalMiddlewareWrapper <TUseCase, TOutputPort>(x)));
pipeline.AddRange(_resolver.ResolveMiddleware <TUseCase>().Select(x => new MiddlewareWrapper <TUseCase, TOutputPort>(x)));
pipeline.AddRange(_resolver.ResolveMiddleware <TUseCase, TOutputPort>(useCase).ToList());
var pipelineRoot = pipeline.FirstOrDefault();
if (pipelineRoot == null)
{
return(interactor.Execute(useCase, outputPort, cancellationToken));
}
pipeline.Add(new InteractorMiddlewareWrapper <TUseCase, TOutputPort>(interactor));
var currentMiddleWare = 1;
Task <UseCaseResult> NextMiddleWare(TUseCase usecase)
=> pipeline[currentMiddleWare++].Execute(usecase, outputPort, NextMiddleWare, cancellationToken);
return(pipelineRoot.Execute(useCase, outputPort, NextMiddleWare, cancellationToken));
}