Signum Framework Tutorials Part 2 – Southwind Logic

using System;
using System.Text;
using System.Collections.Generic;
using System.Linq;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using Signum.Engine;
using Signum.Entities;
using System.Diagnostics;
using System.IO;
using Signum.Engine.Linq;
using Signum.Utilities;
using System.Linq.Expressions;
using System.Data.SqlTypes;
using System.Reflection;
using Signum.Utilities.ExpressionTrees;
using Signum.Entities.Reflection;

namespace Signum.Test.LinqProvider
{
    /// <summary>
    /// Summary description for LinqProvider
    /// </summary>
    [TestClass]
    public class RetrieverTest
    {
        [ClassInitialize()]
        public static void MyClassInitialize(TestContext testContext)
        {
            Starter.StartAndLoad();
        }

        [TestInitialize]
        public void Initialize()
        {
            Connection.CurrentLog = new DebugTextWriter();
        }      

        [TestMethod]
        public void RetrieveSimple()
        {
            var list = Database.Query<CountryDN>().ToList();

            AssertRetrived(list);
        }

        [TestMethod]
        public void RetriveWithEnum()
        {
            var list = Database.Query<GrammyAwardDN>().ToList();

            AssertRetrived(list);
        }


        [TestMethod]
        public void RetriveWithRelatedEntityAndLite()
        {
            var list = Database.Query<LabelDN>().ToList();

            AssertRetrived(list);
        }

        [TestMethod]
        public void RetriveWithIBA()
        {
            var list = Database.Query<NoteWithDateDN>().ToList();

            AssertRetrived(list);
        }

        [TestMethod]
        public void RetriveWithMList()
        {
            var list = Database.Query<ArtistDN>().ToList();

            AssertRetrived(list);
        }

        [TestMethod]
        public void RetriveWithMListEmbedded()
        {
            var list = Database.Query<AlbumDN>().ToList();

            AssertRetrived(list);
        }

        private void AssertRetrived<T>(List<T> list) where T:Modifiable
        {
            var graph = GraphExplorer.FromRoots(list);

            var problematic = graph.Where(a =>
                a.Modified != null ||
                a.SelfModified ||
                a is IdentifiableEntity && (((IdentifiableEntity)a).IdOrNull == null || ((IdentifiableEntity)a).IsNew));

            if (problematic.Any())
                throw new AssertFailedException("Some non-retrived elements: {0}".Formato(problematic.ToString(", ")));  
        }
    }
}