more Autofac faq tests for the missing service and dependecies

Author: dadhi

test/DryIoc.IssuesTests/Issue123_TipsForMigrationFromAutofac.cs

@@ -287,6 +287,28 @@ public void How_Autofac_Owned_works()
             Assert.IsTrue(dep.NestedDep.IsDisposed);
         }
 
+        [Test]
+        public void How_Autofac_handles_service_with_missing_dependency()
+        {
+            var builder = new ContainerBuilder();
+            builder.RegisterType<NoDep>();
+            var container = builder.Build();
+
+            Assert.Throws<DependencyResolutionException>(() => 
+                container.Resolve<NoDep>());
+        }
+
+        [Test]
+        public void How_Autofac_IEnumerable_handles_missing_service()
+        {
+            var builder = new ContainerBuilder();
+            var container = builder.Build();
+
+            var x = container.Resolve<IEnumerable<NoDep>>();
+
+            Assert.IsEmpty(x);
+        }
+
         [Test]
         public void How_Autofac_IEnumerable_handles_service_with_missing_dependency()
         {
@@ -320,6 +342,16 @@ public void How_DryIoc_handles_service_with_missing_dependency()
                 container.Resolve<NoDep>(IfUnresolved.ReturnDefaultIfNotRegistered));
         }
 
+        [Test]
+        public void How_DryIoc_IEnumerable_handles_missing_service()
+        {
+            var container = new Container();
+
+            var x = container.Resolve<IEnumerable<NoDep>>();
+
+            Assert.IsEmpty(x);
+        }
+
         [Test]
         public void How_DryIoc_IEnumerable_handles_service_with_missing_dependency()
         {
@@ -330,13 +362,19 @@ public void How_DryIoc_IEnumerable_handles_service_with_missing_dependency()
                 container.Resolve<IEnumerable<NoDep>>());
         }
 
+        [Test]
+        public void DryIoc_IEnumerable_may_exclude_service_with_missing_dependency()
+        {
+            var container = new Container();
+            container.Register<NoDep>();
+
+            container.Resolve<IEnumerable<NoDep>>(IfUnresolved.ReturnDefault);
+        }
+
         public class NoDep
         {
             public ISomeDep Dep { get; }
-            public NoDep(ISomeDep dep)
-            {
-                Dep = dep;
-            }
+            public NoDep(ISomeDep dep) => Dep = dep;
         }
 
         public interface ISomeDep { }