using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using UnitTestSharp;
using ModuleManager;

namespace ModuleManager.UnitTests
{
	public class ModuleManagerTests : TestFixture
	{
        interface INothingModule
        {
            bool Flag { get; set; }
        }

        public class Nothing : INothingModule
        {
            public bool Flag { get; set; }
        }

        public class ListModulesInAssembly : TestFixture
		{
			public void Works()
			{
				var types = ModuleManager<INothingModule>.ListModulesInAssembly(
					System.Reflection.Assembly.GetExecutingAssembly());

				CheckEqual(1, types.Count);
				CheckEqual(typeof(Nothing), types[0]);
			}
		}
		
        public class AddModule : TestFixture
		{
            public void Works()
            {
                var manager = new ModuleManager<INothingModule>();
                
                manager.AddModuleType(typeof(Nothing));

                string name = typeof(Nothing).Namespace + "." + typeof(Nothing).Name;

                CheckEqual(1, manager.Modules.Count);
                CheckEqual(name, manager.Modules[0]);
            }

			public void AlreadyInList()
			{
                var manager = new ModuleManager<INothingModule>();

                manager.AddModuleType(typeof(Nothing));

                CheckThrow(typeof(Exception));
                manager.AddModuleType(typeof(Nothing));
			}
		}

        public class ExtractModulesFromAssembly : TestFixture
        {
            public void Works()
            {
                var manager = new ModuleManager<INothingModule>();

                manager.ExtractModulesFromAssembly(
                    System.Reflection.Assembly.GetExecutingAssembly());

                string name = typeof(Nothing).Namespace + "." + typeof(Nothing).Name;

                CheckEqual(1, manager.Modules.Count);
                CheckEqual(name, manager.Modules[0]);
            }            
        }

        public class GetModule : TestFixture
        {
            ModuleManager<INothingModule> manager;

            public override void TestSetup()
            {
                manager = new ModuleManager<INothingModule>();

                manager.ExtractModulesFromAssembly(
                    System.Reflection.Assembly.GetExecutingAssembly());
            }
            public void Works()
            {
                INothingModule module = manager.GetModule(manager.Modules.First());

                Check(module != null);
                CheckEqual(typeof(Nothing), module.GetType());
            }

            public void NoSuchModule()
            {
                var manager = new ModuleManager<INothingModule>();

                manager.ExtractModulesFromAssembly(
                    System.Reflection.Assembly.GetExecutingAssembly());

                CheckThrow(typeof(Exception));
                INothingModule module = manager.GetModule("Your mom");
            }

            public void DoesntRecreate()
            {
                var manager = new ModuleManager<INothingModule>();

                manager.ExtractModulesFromAssembly(
                    System.Reflection.Assembly.GetExecutingAssembly());

                var module = manager.GetModule(manager.Modules.First());

                module.Flag = true;

                manager.GetModule(manager.Modules.First());

                Check(module.Flag);
            }
        }
	}
}