public void Lazy()
{
var logOutputs = new List <LogOutput>();
var optionsWithLogging =
SqliteInMemory.CreateOptions <Northwind_smallContext>()
.WithExtension(new ProxiesOptionsExtension().WithLazyLoading()) as
DbContextOptions <Northwind_smallContext>;
using var context = new Northwind_smallContext(optionsWithLogging);
context.Database.ExecuteSqlRaw(CreaeSqlCommands);
context.SaveChanges();
SetupLogging(context, logOutputs);
var stopwatch = Stopwatch.StartNew();
var order = context.Order
.FirstOrDefault(o => o.Customer.CompanyName == "Vins et alcools Chevalier");
Assert.That(order, Is.Not.Null);
Assert.That(order.Employee, Is.Not.Null);
Assert.That(order.Customer, Is.Not.Null);
Console.WriteLine(order.Customer);
Console.WriteLine(
$"Employee: {order?.Employee.FirstName + " " + order?.Employee.LastName} " +
$"Reports to {order?.Employee?.ReportsToEmployee.FirstName + " " + order?.Employee?.ReportsToEmployee.LastName} " +
$"Service {order.Customer.ContactName}." +
$"BTW he also take a look a {order.Employee.EmployeeTerritories.Select(territory => territory.Territory).Count()} territories." +
$"Such as: {String.Join(",", order.Employee.EmployeeTerritories .Select(et => et.Territory.TerritoryDescription + " in " + et.Territory.Region.RegionDescription))}"
);
stopwatch.Stop();
Console.WriteLine("takes {0} ms ", stopwatch.ElapsedMilliseconds);
Assert.That(logOutputs.Count, Is.EqualTo(13));
}
private static (Northwind_smallContext context, List <LogOutput> logs) InitialContext()
{
var logOutputs = new List <LogOutput>();
var optionsWithLogging = SqliteInMemory.CreateOptions <Northwind_smallContext>();
var context = new Northwind_smallContext(optionsWithLogging);
context.Database.ExecuteSqlRaw(CreaeSqlCommands);
context.SaveChanges();
SetupLogging(context, logOutputs);
return(context, logOutputs);
}
