fixed: #432

test/DryIoc.Microsoft.DependencyInjection.Specification.Tests/GHIssue432_Resolving_interfaces_with_contravariant_type_parameter_fails_with_RegisteringImplementationNotAssignableToServiceType_error.cs

@@ -0,0 +1,56 @@
+using System;
+using System.Collections.Generic;
+using NUnit.Framework;
+using Microsoft.Extensions.DependencyInjection;
+
+namespace DryIoc.Microsoft.DependencyInjection.Specification.Tests
+{
+    [TestFixture]
+    public class GHIssue432_Resolving_interfaces_with_contravariant_type_parameter_fails_with_RegisteringImplementationNotAssignableToServiceType_error
+    {
+        [Test]
+        public void Test1()
+        {
+            var type = typeof(IValidator<>).MakeGenericType(typeof(ExtraSettings));
+            var services = new ServiceCollection(); // Microsoft.Extensions.DependencyInjection
+
+            services.AddSingleton<IValidator<ExtraSettings>, SettingsValidator>();
+
+            var container = new Container();
+            var adaptedContainer = container.WithDependencyInjectionAdapter(services); // this throws
+            IServiceProvider serviceProvider = adaptedContainer;
+
+            var validator = serviceProvider.GetService(type);
+            Assert.NotNull(validator);
+        }
+
+        public class Settings
+        {
+            public string Address { get; set; }
+        }
+
+        public class ExtraSettings : Settings
+        {
+            public string Key { get; set; }
+        }
+
+        public interface IValidator<in T>
+        {
+            public bool IsValid(T settings);
+        }
+
+        public abstract class AbstractValidator<T> : IValidator<T>
+        {
+            public bool IsValid(T settings)
+            {
+                return true;
+            }
+        }
+
+        public class SettingsValidator : AbstractValidator<Settings>
+        {
+
+        }
+
+    }
+}