using System;

using System.Collections.Generic;

using System.Text;

using NUnit.Framework;

using Otis.Tests.Entity;



namespace Otis.Tests

{

	[TestFixture]

	public class MappingPreparerTests

	{

		const string errDuplicatePreparer = "Method 'Preparer' on type 'Otis.Tests.MappingPreparerDTO_Duplicate' is marked with [MappingPreparer], but mapping preparer is already set to 'Otis.Tests.Util.Convert'";

		const string errPreparerIsPrivate = "Non public method 'Preparer' on type 'Otis.Tests.MappingPreparerDTO_NonPublic'is marked with [MappingPreparer]. Only public methods can be used as preparers";

		private User m_user;



		[SetUp]

		public void SetUp()

		{

			m_user = new User();

			m_user.Id = 77;

			m_user.FirstName = "aaa";

			m_user.LastName = "bbb";

		}



		[Test]

		[ExpectedException(typeof(OtisException), ExpectedMessage = errDuplicatePreparer)]

		public void Configuration_Throws_With_Duplicate_Preparers()

		{

			ConfigureType<MappingPreparerDTO_Duplicate>();

		}



		[Test]

		[ExpectedException(typeof(OtisException), ExpectedMessage = errPreparerIsPrivate)]

		public void Configuration_Throws_With_NonPublic_Preparers()

		{

			ConfigureType<MappingPreparerDTO_NonPublic>();

		}



		[Test]

		public void Non_Static_Preparer()

		{

			IAssembler<MappingPreparerDTO_InstancePreparer, User> asm = ConfigureType<MappingPreparerDTO_InstancePreparer>();

			MappingPreparerDTO_InstancePreparer dto = asm.AssembleFrom(m_user);

			Assert.AreEqual(77, dto.Id);

			Assert.AreEqual("custom_mapping_InstancePreparer", dto.FullName);

		}



		[Test]

		public void Preparer_Is_Called_Before_Transformation()

		{

			IAssembler<MappingPreparerDTO_CheckOrder, User> asm = ConfigureType<MappingPreparerDTO_CheckOrder>();

			MappingPreparerDTO_CheckOrder dto = asm.AssembleFrom(m_user);

			Assert.AreEqual(77, dto.Id);  // check it is not -1

		}



		[Test]

		public void Static_Preparer()

		{

			IAssembler<MappingPreparerDTO_StaticPreparer, User> asm = ConfigureType<MappingPreparerDTO_StaticPreparer>();

			MappingPreparerDTO_StaticPreparer dto = asm.AssembleFrom(m_user);

			Assert.AreEqual(77, dto.Id);

			Assert.AreEqual("custom_mapping_StaticPreparer", dto.FullName);

		}



		IAssembler<T, User> ConfigureType<T>()

		{

			Configuration cfg = new Configuration();

			cfg.AddType(typeof(T));

			return cfg.GetAssembler<T, User>();

		}

	}

}