Unity singleton and scope lifetimes

UnitySingletonTest

using Microsoft.Practices.Unity;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace UnityTests
{
    /// <summary>
    ///     Demonstrates a singleton registration for Unity
    /// </summary>
    /// <remarks>
    ///     Uses Unity 3.5.0.0
    /// </remarks>
    [TestClass]
    public class UnitySingletonTest
    {
        private UnityContainer Container;

        public interface IFoo
        {
            IBar Bar { get; }
        }

        public interface IBar {}

        public class Bar : IBar {}

        public class Foo : IFoo
        {
            public IBar Bar { get; private set; }
            public Foo(IBar bar)
            {
                Bar = bar;
            }
        }

        [TestInitialize]
        public void TestInitialize()
        {
            Container = new UnityContainer();
            Container.RegisterInstance(new Bar())
                       .RegisterType<IBar>(
                           new PerResolveLifetimeManager(),
                           new InjectionFactory(c => c.Resolve<Bar>()))
                       .RegisterType<IFoo>(
                           new PerResolveLifetimeManager(),
                           new InjectionFactory(c => c.Resolve<Foo>()));
        }

        [TestMethod]
        public void FooInstancesAreDifferent()
        {
            var foo1 = Container.Resolve<IFoo>();
            var foo2 = Container.Resolve<IFoo>();

            Assert.AreNotSame(foo1, foo2);
        }

        [TestMethod]
        public void BarInstancesAreSame()
        {
            var foo1 = Container.Resolve<IFoo>();
            var foo2 = Container.Resolve<IFoo>();

            Assert.AreSame(foo1.Bar, foo2.Bar);
        }
    }

}