/// <summary>
/// Gets a service using the decorator pattern.
/// </summary>
/// <returns>The service instance.</returns>
/// <param name="customizationFunc">A customization function, to build the 'shape' of the decorated service.</param>
/// <typeparam name="TService">The service type, typically an interface.</typeparam>
public TService GetDecoratedService <TService>(Func <ICreatesAutofacDecorator <TService>, ICustomizesAutofacDecorator <TService> > customizationFunc) where TService : class
{
var builder = new AutofacGenericDecoratorBuilder <TService>(resolver);
var customizer = (IGetsService <TService>)customizationFunc(builder);
return(customizer.GetService());
}
public void UsingInitialImplType_resolves_impl_from_resolver(IResolver resolver, ServiceImpl1 impl)
{
var sut = new AutofacGenericDecoratorBuilder <IServiceInterface>(resolver);
Mock.Get(resolver)
.Setup(x => x.Resolve(typeof(ServiceImpl1), It.IsAny <IEnumerable <Parameter> >()))
.Returns(impl);
var result = (AutofacGenericDecoratorCustomizer <IServiceInterface>)sut.UsingInitialImplType(typeof(ServiceImpl1));
Assert.That(result?.Implementation, Is.SameAs(impl));
}
public void UsingInitialImplType_passes_params_to_resolver(IResolver resolver,
ServiceImpl1 impl,
Parameter[] parameters)
{
var sut = new AutofacGenericDecoratorBuilder <IServiceInterface>(resolver);
Mock.Get(resolver)
.Setup(x => x.Resolve(typeof(ServiceImpl1), parameters))
.Returns(impl);
var result = (AutofacGenericDecoratorCustomizer <IServiceInterface>)sut.UsingInitialImplType(typeof(ServiceImpl1), parameters);
Assert.That(result?.Implementation, Is.SameAs(impl));
}
public void UsingInitialImplType_throws_exception_if_impl_type_does_not_derive_from_service(IResolver resolver)
{
var sut = new AutofacGenericDecoratorBuilder <IServiceInterface>(resolver);
Assert.That(() => sut.UsingInitialImplType(typeof(DifferentImpl)), Throws.ArgumentException);
}
