static ServiceDescriptor WithUrlHelperFactoryDecorator(IServiceCollection services)
{
var descriptor = services.FirstOrDefault(sd => sd.ServiceType == typeof(IUrlHelperFactory));
var lifetime = ServiceLifetime.Singleton;
Func <IServiceProvider, object> instantiate = sp => new UrlHelperFactory();
if (descriptor != null)
{
lifetime = descriptor.Lifetime;
instantiate = sp => sp.CreateInstance(descriptor);
}
IUrlHelperFactory NewFactory(IServiceProvider serviceProvider)
{
var decorated = instantiate(serviceProvider);
var source = serviceProvider.GetRequiredService <IApiVersionParameterSource>();
var instance = decorated;
if (source.VersionsByUrlSegment())
{
var factory = ActivatorUtilities.CreateFactory(typeof(ApiVersionUrlHelperFactory), new[] { typeof(IUrlHelperFactory) });
instance = factory(serviceProvider, new[] { decorated });
}
return((IUrlHelperFactory)instance);
}
return(Describe(typeof(IUrlHelperFactory), NewFactory, lifetime));
}
public void SetUp()
{
var collection = new ServiceCollection();
collection.AddTransient <TypeToBeActivated>();
collection.AddSingleton <DependencyA>();
collection.AddSingleton <DependencyB>();
collection.AddSingleton <DependencyC>();
collection.AddTransient <TypeToBeActivated>();
_serviceProvider = collection.BuildServiceProvider();
_factory = ActivatorUtilities.CreateFactory(typeof(TypeToBeActivated), new Type[] { typeof(DependencyB), typeof(DependencyC) });
_factoryArguments = new object[] { new DependencyB(), new DependencyC() };
}
static ServiceDescriptor WithUrlHelperFactoryDecorator(IServiceCollection services)
{
var descriptor = services.First(sd => sd.ServiceType == typeof(IUrlHelperFactory));
var factory = ActivatorUtilities.CreateFactory(typeof(ApiVersionUrlHelperFactory), new[] { typeof(IUrlHelperFactory) });
IUrlHelperFactory NewFactory(IServiceProvider serviceProvider)
{
var decorated = serviceProvider.CreateInstance(descriptor !);
var options = serviceProvider.GetRequiredService <IOptions <ApiVersioningOptions> >().Value;
var instance = options.ApiVersionReader.VersionsByUrlSegment() ?
factory(serviceProvider, new[] { decorated }) :
decorated;
return((IUrlHelperFactory)instance);
}
return(Describe(typeof(IUrlHelperFactory), NewFactory, descriptor.Lifetime));
}