Found what could be an Autofac bug

Made a test for repro and emailed the autofac group

--HG--
branch : dev

src/Orchard.Tests/Environment/AutofacUtil/AutofacTests.cs

@@ -0,0 +1,39 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using Autofac;
+using NUnit.Framework;
+
+namespace Orchard.Tests.Environment.AutofacUtil {
+[TestFixture]
+public class AutofacTests {
+    public interface IFoo { }
+    public class Foo1 : IFoo { }
+    public class Foo2 : IFoo { }
+    public class Foo3 : IFoo { }
+
+    [Test]
+    public void EnumerablesFromDifferentLifetimeScopesShouldReturnDifferentCollections() {
+        var rootBuilder = new ContainerBuilder();
+        rootBuilder.RegisterType<Foo1>().As<IFoo>();
+        var rootContainer = rootBuilder.Build();
+
+        var scopeA = rootContainer.BeginLifetimeScope(
+            scopeBuilder => scopeBuilder.RegisterType<Foo2>().As<IFoo>());
+        var arrayA = scopeA.Resolve<IEnumerable<IFoo>>().ToArray();
+
+        var scopeB = rootContainer.BeginLifetimeScope(
+            scopeBuilder => scopeBuilder.RegisterType<Foo3>().As<IFoo>());
+        var arrayB = scopeB.Resolve<IEnumerable<IFoo>>().ToArray();
+
+        Assert.That(arrayA.Count(), Is.EqualTo(2));
+        Assert.That(arrayA, Has.Some.TypeOf<Foo1>());
+        Assert.That(arrayA, Has.Some.TypeOf<Foo2>());
+
+        Assert.That(arrayB.Count(), Is.EqualTo(2));
+        Assert.That(arrayB, Has.Some.TypeOf<Foo1>());
+        Assert.That(arrayB, Has.Some.TypeOf<Foo3>());
+    }
+}
+}

src/Orchard.Tests/Orchard.Framework.Tests.csproj

@@ -156,6 +156,7 @@
     <Compile Include="Data\Builders\SessionFactoryBuilderTests.cs" />
     <Compile Include="Data\RepositoryTests.cs" />
     <Compile Include="Data\StubLocator.cs" />
+    <Compile Include="Environment\AutofacUtil\AutofacTests.cs" />
     <Compile Include="Environment\AutofacUtil\DynamicProxy2\DynamicProxyTests.cs" />
     <Compile Include="Environment\Utility\Build.cs" />
     <Compile Include="Environment\Configuration\AppDataFolderTests.cs" />