CovariantTestFailure

CovariantTest.cs

using Xunit;

namespace Autofac.Test.Features.OpenGenerics
{
    public class OpenGenericCovariantTests
    {
        private interface INotificationHandler<TNotification>
        {
        }

        private interface INotification
        {
        }

        private class MyNotification : INotification
        {
        }

        private class Handler : INotificationHandler<INotification>
        {
        }

        [Fact]
        public void CanResolveCovariantOpenGeneric()
        {
            var builder = new ContainerBuilder();

            builder.RegisterType<Handler>().As<INotificationHandler<INotification>>();

            var container = builder.Build();

            // Nope...
            container.Resolve<INotificationHandler<MyNotification>>();
        }
    }
}