public void ShouldInferRelationship()
{
var context = CreateObjectContext();
context.InitializeRepository();
Person p = new Person() { Name = "Nick" };
p.Pet = new Pet() { Name = "Titus" };
context.BeginTransaction();
context.Serialize(p);
context.CommitTransaction();
//Lazyloading
context = CreateObjectContext();
p = context.Cast<Person>().FirstOrDefault();
Assert.IsNotNull(p);
Assert.IsNotNull(p.Pet);
//no lazyLoading
context = CreateObjectContext();
context.IsLazyLoadingEnabled = false;
p = context.Cast<Person>().FirstOrDefault();
Assert.IsNotNull(p);
Assert.IsNull(p.Pet);
//only infer when specified
context = CreateObjectContext();
p = context.Cast<Person>().Infer(q => q.Pet).FirstOrDefault();
context.IsLazyLoadingEnabled = false;
Assert.IsNotNull(p);
Assert.IsNotNull(p.Pet);
}
public void ShouldLoadOneToOneRelationship()
{
var context = CreateObjectContext();
context.InitializeRepository();
Person p = new Person() { Name = "Nick" };
p.Pet = new Pet() { Name = "Titus" };
context.BeginTransaction();
context.Serialize(p);
context.CommitTransaction();
// using nlinq
Assert.AreEqual(1, context.LoadScalar<int>("(from Evaluant.Uss.Tests.ObjectContext.Relationships.Model.Pet pet in context select pet).Count()"));
Assert.AreEqual(1, context.LoadScalar<int>("(from Evaluant.Uss.Tests.ObjectContext.Relationships.Model.Person person in context select person).Count()"));
// using LINQ
Assert.AreEqual(1, (from Evaluant.Uss.Tests.ObjectContext.Relationships.Model.Pet pet in context select pet).Count());
Assert.AreEqual(1, (from Evaluant.Uss.Tests.ObjectContext.Relationships.Model.Person person in context select person).Count());
}
public void ShouldSaveOneToOneRelationship()
{
var context = CreateObjectContext();
context.InitializeRepository();
Person p = new Person() { Name = "Nick" };
p.Pet = new Pet() { Name = "Titus" };
context.BeginTransaction();
context.Serialize(p);
context.CommitTransaction();
// get with same context
var pets = context.Load<Pet>();
Assert.AreEqual(1, pets.Count);
// get with new context
context = CreateObjectContext();
pets = context.Load<Pet>();
Assert.AreEqual(1, pets.Count);
}
public void ShouldInferRelationshipToMany()
{
var context = CreateObjectContext();
context.InitializeRepository();
Person p = new Person() { Name = "Nick" };
p.Addresses = new List<Address> { new Address { City = "Mulhouse" }, new Address { City = "Colmar" } };
context.BeginTransaction();
context.Serialize(p);
context.CommitTransaction();
//Lazyloading
context = CreateObjectContext();
p = context.Cast<Person>().FirstOrDefault();
Assert.IsNotNull(p);
Assert.IsNotNull(p.Addresses);
Assert.AreEqual(2, p.Addresses.Count);
//no lazyLoading
context = CreateObjectContext();
context.IsLazyLoadingEnabled = false;
p = context.Cast<Person>().FirstOrDefault();
Assert.IsNotNull(p);
Assert.AreEqual(0, p.Addresses.Count);
//only infer when specified
context = CreateObjectContext();
p = context.Cast<Person>().Infer(q => q.Addresses).FirstOrDefault();
context.IsLazyLoadingEnabled = false;
Assert.IsNotNull(p);
Assert.IsNotNull(p.Addresses);
Assert.AreEqual(2, p.Addresses.Count);
}