// Author: Simon Gockner
// Created: 2020-09-18
// Copyright(c) 2020 SimonG. All Rights Reserved.

using System.Diagnostics.CodeAnalysis;
using JetBrains.Annotations;
using LightweightIocContainer;
using LightweightIocContainer.Exceptions;
using NUnit.Framework;

namespace Test.LightweightIocContainer
{
    [TestFixture]
    public class OpenGenericRegistrationTest
    {
        private IocContainer _iocContainer;
        
        [UsedImplicitly]
        [SuppressMessage("ReSharper", "UnusedTypeParameter")]
        public interface ITest<T>
        {
            
        }
        
        [UsedImplicitly]
        public class Test<T> : ITest<T>
        {
            
        }

        [SetUp]
        public void SetUp() => _iocContainer = new IocContainer();

        [TearDown]
        public void TearDown() => _iocContainer.Dispose();

        [Test]
        public void TestRegisterOpenGenericType()
        {
            _iocContainer.Register(r => r.AddOpenGenerics(typeof(ITest<>), typeof(Test<>)));

            ITest<int> test = _iocContainer.Resolve<ITest<int>>();
            Assert.NotNull(test);
        }

        [Test]
        public void TestRegisterOpenGenericTypeAsSingleton()
        {
            _iocContainer.Register(r => r.AddOpenGenerics(typeof(ITest<>), typeof(Test<>), Lifestyle.Singleton));

            ITest<int> test = _iocContainer.Resolve<ITest<int>>();
            Assert.NotNull(test);

            ITest<int> secondTest = _iocContainer.Resolve<ITest<int>>();
            Assert.NotNull(secondTest);
            
            Assert.AreEqual(test, secondTest);
            Assert.AreSame(test, secondTest);
        }
        
        [Test]
        public void TestRegisterOpenGenericTypeAsMultitonThrowsException() => 
            Assert.Throws<InvalidRegistrationException>(() => _iocContainer.Register(r => r.AddOpenGenerics(typeof(ITest<>), typeof(Test<>), Lifestyle.Multiton)));

        [Test]
        public void TestRegisterNonOpenGenericTypeWithOpenGenericsFunctionThrowsException() =>
            Assert.Throws<InvalidRegistrationException>(() => _iocContainer.Register(r => r.AddOpenGenerics(typeof(int), typeof(int))));
    }
}