removing the old stuff from Mef wrapper and testing it

Author: dadhi

src/DryIoc.MefAttributedModel/AttributedModel.cs

@@ -137,17 +137,14 @@ public static IContainer WithMefSpecificWrappers(this IContainer container)
                 made: _createExportFactoryMethod,
                 setup: Setup.Wrapper);
 
-            // todo: @perf optimize to use unwrapped factory
+            // todo: @perf optimize to use unwrapped factory the same as GetLazyMetadataExpressionOrDefault
             container.Register(typeof(ExportFactory<,>),
                 made: _createExportFactoryWithMetadataMethod,
                 setup: Setup.WrapperWith(0));
 
             container.Register(typeof(Lazy<,>),
                 WrapperExpressionFactory.Of(GetLazyMetadataExpressionOrDefault, Setup.WrapperWith(0)));
 
-            container.Register(typeof(Lazy<>),
-                WrapperExpressionFactory.Of(WrappersSupport.GetLazyExpressionOrDefault), IfAlreadyRegistered.Replace);
-
             return container;
         }
 

test/DryIoc.IssuesTests/GHIssue228_Updated_DryIoc_from_4_to_4_1_in_Unity_Engine_project_keyed_register_resolve_wont_work_anymore.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Linq;
 using DryIoc.ImTools;
+using DryIoc.MefAttributedModel;
 using NUnit.Framework;
 
 namespace DryIoc.IssuesTests
@@ -10,6 +11,9 @@ public class GHIssue228_Updated_DryIoc_from_4_to_4_1_in_Unity_Engine_project_key
     {
         public int Run()
         {
+            // Mef Lazy<T, M> wrapper
+            Test_the_metadata_with_LazyMeta_and_the_same_keys_But_only_one_key_matches_the_metadata();
+
             Test_the_Func_metadata_and_the_Diff_keys_But_only_one_key_matches_the_metadata();
             Test_the_Func_metadata_and_the_same_keys_But_only_one_key_matches_the_metadata();
             Test_the_Lazy_metadata_and_the_Diff_keys_But_only_one_key_matches_the_metadata();
@@ -21,7 +25,8 @@ public int Run()
             Test_the_metadata_and_the_same_keys();
             For_multiple_same_key_registrations_all_should_be_returned();
             Should_be_able_to_get_two_keyed_registrations();
-            return 11;
+
+            return 12;
         }
 
         [Test]
@@ -190,6 +195,21 @@ public void Test_the_metadata_with_Lazy_and_the_same_keys_But_only_one_key_match
             Assert.AreEqual(42, ab[0].Metadata);
         }
 
+        [Test]
+        public void Test_the_metadata_with_LazyMeta_and_the_same_keys_But_only_one_key_matches_the_metadata()
+        {
+            var container = new Container().WithMef();
+
+            container.Register<Iface, A>(serviceKey: Keys.A, setup: Setup.With(metadataOrFuncOfMetadata: "a"));
+            container.Register<Iface, B>(serviceKey: Keys.A, setup: Setup.With(metadataOrFuncOfMetadata: 42));
+            container.Register<Iface, C>(serviceKey: Keys.C, setup: Setup.With(metadataOrFuncOfMetadata: "c"));
+
+            var ab = container.Resolve<Lazy<Iface, int>[]>(serviceKey: Keys.A);
+            Assert.AreEqual(1, ab.Length);
+            Assert.IsInstanceOf<B>(ab[0].Value);
+            Assert.AreEqual(42, ab[0].Metadata);
+        }
+
         [Test]
         public void Test_the_Func_metadata_and_the_Diff_keys_But_only_one_key_matches_the_metadata()
         {