- add ignoreConstructor Attribute

LightweightIocContainer/Annotations/IocIgnoreConstructorAttribute.cs

@@ -0,0 +1,16 @@
+// Author: Gockner, Simon
+// Created: 2022-09-01
+// Copyright(c) 2022 SimonG. All Rights Reserved.
+
+using LightweightIocContainer.Interfaces;
+
+namespace LightweightIocContainer.Annotations;
+
+/// <summary>
+/// If a constructor is annotated with this attribute it will be ignored by the <see cref="IIocContainer"/>
+/// </summary>
+[AttributeUsage(AttributeTargets.Constructor)]
+public class IocIgnoreConstructorAttribute : Attribute
+{
+    
+}

LightweightIocContainer/IocContainer.cs

@@ -4,6 +4,7 @@
 
 using System.Reflection;
 using System.Runtime.CompilerServices;
+using LightweightIocContainer.Annotations;
 using LightweightIocContainer.Exceptions;
 using LightweightIocContainer.Interfaces;
 using LightweightIocContainer.Interfaces.Factories;
@@ -572,7 +573,11 @@ public class IocContainer : IIocContainer, IIocResolver
     /// <exception cref="NoPublicConstructorFoundException">No public constructor was found for the given <see cref="Type"/></exception>
     private List<ConstructorInfo> TryGetSortedConstructors(Type type)
     {
-        List<ConstructorInfo> sortedConstructors = type.GetConstructors().OrderByDescending(c => c.GetParameters().Length).ToList();
+        List<ConstructorInfo> sortedConstructors = type.GetConstructors()
+            .Where(c => c.GetCustomAttribute<IocIgnoreConstructorAttribute>() == null)
+            .OrderByDescending(c => c.GetParameters().Length)
+            .ToList();
+        
         if (!sortedConstructors.Any()) //no public constructor available
             throw new NoPublicConstructorFoundException(type);
             

LightweightIocContainer/LightweightIocContainer.xml

@@ -13,6 +13,11 @@
             <param name="action">The given <see cref="T:System.Action`1"/> to convert</param>
             <returns>An <see cref="T:System.Action`1"/> converted from the given <see cref="T:System.Action`1"/></returns>
         </member>
+        <member name="T:LightweightIocContainer.Annotations.IocIgnoreConstructorAttribute">
+            <summary>
+            If a constructor is annotated with this attribute it will be ignored by the <see cref="T:LightweightIocContainer.Interfaces.IIocContainer"/>
+            </summary>
+        </member>
         <member name="T:LightweightIocContainer.Creator">
             <summary>
             Helper for dynamic instance creation

Test.LightweightIocContainer.Validation/IocValidatorTest.cs

@@ -4,6 +4,7 @@
 
 using JetBrains.Annotations;
 using LightweightIocContainer;
+using LightweightIocContainer.Annotations;
 using LightweightIocContainer.Exceptions;
 using LightweightIocContainer.Interfaces.Installers;
 using LightweightIocContainer.Interfaces.Registrations;
@@ -21,11 +22,6 @@ public class IocValidatorTest
             
     }
         
-    public interface ITest2
-    {
-            
-    }
-        
     [UsedImplicitly]
     public interface IParameter
     {
@@ -36,32 +32,36 @@ public class IocValidatorTest
     {
         public Test(IParameter parameter) => parameter.Method();
     }
-    
+
-    private class Test2 : ITest2
+    private class TestViewModel : ITest
     {
-        public Test2(ITest dependency)
+        public TestViewModel(IParameter parameter) => parameter.Method();
-        {
-                
-        }
-    }
         
+        [IocIgnoreConstructor]
+        public TestViewModel() => throw new Exception();
+    }
+
+    private class Parameter : IParameter
+    {
+        public bool Method() => throw new NotImplementedException();
+    }
+    
     [UsedImplicitly]
     public interface ITestFactory
     {
         ITest Create(IParameter parameter);
     }
-        
+    
     [UsedImplicitly]
-    public interface ITest2Factory
+    public interface IInvalidTestFactory
     {
-        ITest2 InvalidCreate();
+        ITest Create();
-        ITest2 Create(ITest test);
     }
-        
+    
     [UsedImplicitly]
-    public interface IInvalidFactory
+    public interface IParameterFactory
     {
-        ITest Create();
+        IParameter Create();
     }
         
     private class TestInstallerNoFactory : IIocInstaller
@@ -76,18 +76,36 @@ public class IocValidatorTest
         
     private class TestInstallerWithInvalidFactory : IIocInstaller
     {
-        public void Install(IRegistrationCollector registration) => registration.Add<ITest, Test>().WithFactory<IInvalidFactory>();
+        public void Install(IRegistrationCollector registration) => registration.Add<ITest, Test>().WithFactory<IInvalidTestFactory>();
     }
-        
+    
-    private class InvalidTestClassInstaller : IIocInstaller
+    private class TestInstallerInvalidFactoryParameterRegisteredWithoutFactory : IIocInstaller
     {
         public void Install(IRegistrationCollector registration)
         {
-            registration.Add<ITest, Test>().WithFactory<ITestFactory>();
+            registration.Add<ITest, Test>().WithFactory<IInvalidTestFactory>();
-            registration.Add<ITest2, Test2>().WithFactory<ITest2Factory>();
+            registration.Add<IParameter, Parameter>();
         }
     }
         
+    private class TestInstallerInvalidFactoryParameterRegisteredWithFactory : IIocInstaller
+    {
+        public void Install(IRegistrationCollector registration)
+        {
+            registration.Add<ITest, Test>().WithFactory<IInvalidTestFactory>();
+            registration.Add<IParameter, Parameter>().WithFactory<IParameterFactory>();
+        }
+    }
+    
+    private class TestInstallerInvalidFactoryViewModel : IIocInstaller
+    {
+        public void Install(IRegistrationCollector registration)
+        {
+            registration.Add<ITest, TestViewModel>().WithFactory<IInvalidTestFactory>();
+            registration.Add<IParameter, Parameter>().WithFactory<IParameterFactory>();
+        }
+    }
+
     [Test]
     public void TestValidateWithoutFactory()
     {
@@ -129,12 +147,23 @@ public class IocValidatorTest
             
         parameterMock.Verify(p => p.Method(), Times.Never);
     }
+
+    [Test]
+    public void TestValidateWithInvalidFactoryParameterWithoutFactory()
+    {
+        IocContainer iocContainer = new();
+        iocContainer.Install(new TestInstallerInvalidFactoryParameterRegisteredWithoutFactory());
+            
+        IocValidator validator = new(iocContainer);
+            
+        validator.Validate();
+    }
         
     [Test]
     public void TestValidateWithInvalidParameterWithFactory()
     {
         IocContainer iocContainer = new();
-        iocContainer.Install(new InvalidTestClassInstaller());
+        iocContainer.Install(new TestInstallerInvalidFactoryParameterRegisteredWithFactory());
             
         IocValidator validator = new(iocContainer);
 
@@ -157,6 +186,31 @@ public class IocValidatorTest
             
         Assert.IsInstanceOf<DirectResolveWithRegisteredFactoryNotAllowed>(iTest2CtorNotMatchingException.InnerExceptions[0]);
     }
+    
+    [Test]
+    public void TestValidateViewModelWithInvalidParameterWithFactory()
+    {
+        IocContainer iocContainer = new();
+        iocContainer.Install(new TestInstallerInvalidFactoryViewModel());
+            
+        IocValidator validator = new(iocContainer);
+
+        AggregateException aggregateException = Assert.Throws<AggregateException>(() => validator.Validate());
+        
+        if (aggregateException?.InnerExceptions[0] is not NoMatchingConstructorFoundException noMatchingConstructorFoundException)
+        {
+            Assert.Fail($"First element of {nameof(aggregateException.InnerExceptions)} is not of type {nameof(NoMatchingConstructorFoundException)}.");
+            return;
+        }
+            
+        if (noMatchingConstructorFoundException.InnerExceptions[0] is not ConstructorNotMatchingException iTest2CtorNotMatchingException)
+        {
+            Assert.Fail($"First element of {nameof(noMatchingConstructorFoundException.InnerExceptions)} is not of type {nameof(ConstructorNotMatchingException)}.");
+            return;
+        }
+            
+        Assert.IsInstanceOf<DirectResolveWithRegisteredFactoryNotAllowed>(iTest2CtorNotMatchingException.InnerExceptions[0]);
+    }
         
     [Test]
     public void TestValidateInvalidFactory()