public void GetHandlersReturnHandlerForGivenMessageType()
{
IEnumerable <Type> MessageHandlerTypes()
{
return(new []
{
typeof(HandlerA),
typeof(HandlerB),
typeof(NotAHandler)
});
}
var sut = new MessageHandlerRegistry(MessageHandlerTypes);
var sp = A.Fake <IServiceProvider>();
A.CallTo(() => sp.GetService(A <Type> .That.IsEqualTo(typeof(HandlerA)))).Returns(new HandlerA());
var scope = A.Fake <IServiceScope>();
A.CallTo(() => scope.ServiceProvider).Returns(sp);
var handlers = sut.GetHandlers(typeof(MessageA), scope).ToList();
Assert.NotEmpty(handlers);
Assert.Single(handlers);
Assert.Single(handlers, h => h is HandlerA);
}
public void GetHandlersDoesNotReturnHandlerForGivenMessageTypeIfHandlerIsntARealHandler()
{
IEnumerable <Type> MessageHandlerTypes()
{
return(new[]
{
typeof(HandlerB),
typeof(NotAHandler)
});
}
var sut = new MessageHandlerRegistry(MessageHandlerTypes);
var sp = A.Fake <IServiceProvider>();
A.CallTo(() => sp.GetService(A <Type> .That.IsEqualTo(typeof(NotAHandler)))).Returns(new NotAHandler());
var scope = A.Fake <IServiceScope>();
A.CallTo(() => scope.ServiceProvider).Returns(sp);
var scopeFactory = A.Fake <IServiceScopeFactory>();
A.CallTo(() => scopeFactory.CreateScope()).Returns(scope);
var handlers = sut.GetHandlers(scopeFactory, typeof(MessageA)).ToList();
Assert.Empty(handlers);
}