public void TestMethod1()
{
using (DbEntities context = new DbEntities())
{
TopLevelObject top = new TopLevelObject();
top.PopulateTest();
context.TopLevelObject.Add(top);
IEnumerable<DbEntityValidationResult> errors = context.GetValidationErrors();
context.SaveChanges();
IEnumerable<SecondLevelObjectBase> objects =
(from t in context.TopLevelObject
join s in context.SecondLevelObject
on t.TopLevelObjectId equals s.Parent.TopLevelObjectId
where t.TopLevelObjectId == top.TopLevelObjectId
select s).ToList();
Assert.AreEqual(objects.Count(), 3);
Assert.AreEqual(objects.OfType<TypeASecondLevelObject>().Count(), 1);
Assert.AreEqual(objects.OfType<TypeBSecondLevelObject>().Count(), 1);
Assert.AreEqual(objects.OfType<TypeCSecondLevelObject>().Count(), 1);
}
}
static void Main(string[] args)
{
DbEntities context = new DbEntities();
}