static void ExecutePerformanceTest(IdGenerator customers,
IdGenerator orders,
string title,
bool withFinder,
Action <MyDatabase> setup = null)
{
ExecuteOnNewDbContext(db =>
{
setup?.Invoke(db);
FasterFind finder = withFinder ? new FasterFind(db) : null;
title = withFinder ? $"Finder.Find: {title}" : $"DbContext.Find: {title}";
using (new PerformanceScope($"Customers - {title}"))
{
foreach (var id in customers.All())
{
if (finder != null)
{
finder.Find <Customer>(id);
}
else
{
db.Customers.Find(id);
}
}
}
using (new PerformanceScope($"Orders - {title}"))
{
foreach (var id in orders.All())
{
if (finder != null)
{
finder.Find <Order>(id);
}
else
{
db.Orders.Find(id);
}
}
}
});
}
private static void FunctionalTest()
{
Console.WriteLine("Functional test");
{
// Object can be retreived after adding it to the DbContext
var customerIds = new IdGenerator();
using (var db = new MyDatabase())
{
var finder = new FasterFind(db);
db.Customers.Add(new Customer()
{
Id = customerIds.Next(),
Name = "Some name",
Orders = new List <Order>()
});
Debug.Assert(finder.Find <Customer>(customerIds.All().First()) != null);
Debug.Assert(finder.Find <Order>(customerIds.All().First()) == null);
}
}
{
// Object cannot be retreived after deleting it from the DbContext
var customerIds = new IdGenerator();
using (var db = new MyDatabase())
{
var finder = new FasterFind(db);
var customer = db.Customers.Add(new Customer()
{
Id = customerIds.Next(),
Name = "Some name",
Orders = new List <Order>()
});
db.SaveChanges();
db.Customers.Remove(customer);
Debug.Assert(finder.Find <Customer>(customerIds.All().First()) == null);
db.SaveChanges();
Debug.Assert(finder.Find <Customer>(customerIds.All().First()) == null);
}
}
{
// Nested Object can be retrieved
var customerIds = new IdGenerator();
var orderIds = new IdGenerator();
using (var db = new MyDatabase())
{
var finder = new FasterFind(db);
var customer = db.Customers.Add(new Customer()
{
Id = customerIds.Next(),
Name = "Some name",
Orders = new List <Order>()
{
new Order()
{
Id = orderIds.Next(),
}
}
});
Debug.Assert(finder.Find <Order>(orderIds.All().First()) != null);
db.SaveChanges();
Debug.Assert(finder.Find <Order>(orderIds.All().First()) != null);
}
}
{
// Nested Object can be retrieved - late bound
// WARNING THIS IS THE ONLY USE-CASE THAT THIS
// IMPLEMENTATION DOES NOT SUPPORT - UNLESS SAVED WITH SAVECHANGES
var customerIds = new IdGenerator();
var orderIds = new IdGenerator();
using (var db = new MyDatabase())
{
var finder = new FasterFind(db);
var customer = db.Customers.Add(new Customer()
{
Id = customerIds.Next(),
Name = "Some name",
Orders = new List <Order>()
});
customer.Orders.Add(new Order()
{
Customer = customer,
Id = orderIds.Next(),
});
// This is the case where EF can find the object
// and our implementation cannot find it
// but EF is slow because of this 'only' case.
Debug.Assert(finder.Find <Order>(orderIds.All().First()) == null);
Debug.Assert(db.Orders.Find(orderIds.All().First()) != null);
db.SaveChanges();
Debug.Assert(finder.Find <Order>(orderIds.All().First()) != null);
}
}
}