public void GivenOrderItem_WhenDeriving_ThenRequiredRelationsMustExist()
{
this.InstantiateObjects(this.DatabaseSession);
var buyer = new OrganisationBuilder(this.DatabaseSession).WithName("buyer").Build();
var mechelen = new CityBuilder(this.DatabaseSession).WithName("Mechelen").Build();
var shipToContactMechanism = new PostalAddressBuilder(this.DatabaseSession).WithGeographicBoundary(mechelen).WithAddress1("Haverwerf 15").Build();
var partyContactMechanism = new PartyContactMechanismBuilder(this.DatabaseSession).WithContactMechanism(shipToContactMechanism).Build();
var part = new RawMaterialBuilder(this.DatabaseSession).WithName("raw stuff").Build();
buyer.AddPartyContactMechanism(partyContactMechanism);
this.DatabaseSession.Derive(true);
this.DatabaseSession.Commit();
var builder = new PurchaseOrderItemBuilder(this.DatabaseSession);
order.AddPurchaseOrderItem(builder.Build());
Assert.IsTrue(this.DatabaseSession.Derive().HasErrors);
this.DatabaseSession.Rollback();
builder.WithPart(part);
order.AddPurchaseOrderItem(builder.Build());
Assert.IsFalse(this.DatabaseSession.Derive().HasErrors);
builder.WithProduct(new GoodBuilder(this.DatabaseSession).Build());
var orderItem = builder.Build();
order.AddPurchaseOrderItem(orderItem);
Assert.IsTrue(this.DatabaseSession.Derive().HasErrors);
orderItem.RemovePart();
Assert.IsFalse(this.DatabaseSession.Derive().HasErrors);
}
