public void UnitOfWork_Rolledback_When_Containing_TransactionScope_Is_Rolledback()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
DateTime oldDate;
using (var txScope = new TransactionScope(TransactionScopeOption.Required))
using (var uowScope = new UnitOfWorkScope(IsolationLevel.Serializable))
{
var ordersRepository = new Db4oRepository <Order>();
var order = (from o in ordersRepository
select o).First();
oldDate = order.OrderDate;
order.OrderDate = DateTime.Now;
orderId = order.OrderID;
uowScope.Commit();
//Note: txScope has not been committed
}
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository <Order>();
var order = (from o in ordersRepository
where o.OrderID == orderId
select o).First();
Assert.That(order.OrderDate, Is.EqualTo(oldDate));
}
}
}
public void Query_Using_Specifications_With_Closure_Works()
{
//This test demonstrates how closures can be used to modify a pre-defined specification using
//parameters. The specification in this test searches for all customers in the state specified by
//the queryState local variable. The test then proceeds to build a query using the specification
//and enumerates over the states array and executes the query by changing the queryState parameter.
var states = new[] { "PA", "LA" };
var queryState = string.Empty;
var spec = new Specification <Order>((order) => order.Customer.Address.State == queryState);
var repository = new Db4oRepository <Order>();
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
{
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("PA", 2));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("DE", 5));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("LA", 3));
});
var query = repository.With(x => x.Customer).Query(spec);
states.ForEach(testState =>
{
queryState = testState;
var results = query.ToArray();
results.ForEach(result =>
Assert.That(result.Customer.Address.State, Is.EqualTo(testState)));
});
}
}
public void Query_Allows_Projection_Using_Select_Projection()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
var ordersRepository = new Db4oRepository <Order>();
var results = from order in ordersRepository
select new
{
order.Customer.FirstName,
order.Customer.LastName,
order.ShipDate,
order.OrderDate
};
Assert.DoesNotThrow(() => results.ForEach(x =>
{
Assert.That(string.IsNullOrEmpty(x.LastName), Is.False);
Assert.That(string.IsNullOrEmpty(x.FirstName), Is.False);
}));
}
}
public void Nested_UnitOfWork_With_Different_Transaction_Compatibility_Works()
{
var changedShipDate = DateTime.Now.AddDays(1);
var changedOrderDate = DateTime.Now.AddDays(2);
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository <Order>();
orderId = ordersRepository.Select(x => x.OrderID).First();
}
Assert.NotNull(orderId);
using (new UnitOfWorkScope())
{
var outerRepository = new Db4oRepository <Order>();
var outerOrder = outerRepository.Where(x => x.OrderID == orderId).First();
outerOrder.OrderDate = changedOrderDate;
using (var innerScope = new UnitOfWorkScope(UnitOfWorkScopeTransactionOptions.CreateNew))
{
var innerRepository = new Db4oRepository <Order>();
var innerOrder = innerRepository.Where(x => x.OrderID == orderId).First();
innerOrder.ShipDate = changedShipDate;
innerScope.Commit();
}
}
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository <Order>();
var order = ordersRepository.First();
Assert.That(order.OrderDate, Is.Not.EqualTo(changedOrderDate));
Assert.That(order.ShipDate, Is.Not.EqualTo(changedShipDate));
}
}
}
public void Query_Using_QueryMethod_Returns_Matched_Records_Only()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
{
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("PA", 2));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("DE", 5));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("LA", 3));
});
var customersInPA = new Specification <Order>(x => x.Customer.Address.State == "DE");
var ordersRepository = new Db4oRepository <Order>();
var results = from order in ordersRepository.Query(customersInPA) select order;
Assert.That(results.Count(), Is.GreaterThan(0));
Assert.That(results.Count(), Is.EqualTo(5));
}
}
public void Save_Updates_Existing_Order_Record()
{
var updatedDate = DateTime.Now;
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
using (var scope = new UnitOfWorkScope())
{
var orderRepository = new Db4oRepository <Order>();
var order = orderRepository.FirstOrDefault();
Assert.That(order, Is.Not.Null);
orderId = order.OrderID;
order.OrderDate = updatedDate;
orderRepository.Save(order); //Db4o does not do change tracking!
scope.Commit();
}
using (new UnitOfWorkScope())
{
var orderRepository = new Db4oRepository <Order>();
var order = (from o in orderRepository
where o.OrderID == orderId
select o).FirstOrDefault();
Assert.That(order, Is.Not.Null);
Assert.That(order.OrderDate.Date, Is.EqualTo(updatedDate.Date));
Assert.That(order.OrderDate.Hour, Is.EqualTo(updatedDate.Hour));
Assert.That(order.OrderDate.Minute, Is.EqualTo(updatedDate.Minute));
Assert.That(order.OrderDate.Second, Is.EqualTo(updatedDate.Second));
}
}
}
public void Nested_UnitOfWork_With_Different_Transaction_Compatibility_Works()
{
var changedShipDate = DateTime.Now.AddDays(1);
var changedOrderDate = DateTime.Now.AddDays(2);
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository<Order>();
orderId = ordersRepository.Select(x => x.OrderID).First();
}
Assert.NotNull(orderId);
using (new UnitOfWorkScope())
{
var outerRepository = new Db4oRepository<Order>();
var outerOrder = outerRepository.Where(x => x.OrderID == orderId).First();
outerOrder.OrderDate = changedOrderDate;
using (var innerScope = new UnitOfWorkScope(UnitOfWorkScopeTransactionOptions.CreateNew))
{
var innerRepository = new Db4oRepository<Order>();
var innerOrder = innerRepository.Where(x => x.OrderID == orderId).First();
innerOrder.ShipDate = changedShipDate;
innerScope.Commit();
}
}
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository<Order>();
var order = ordersRepository.First();
Assert.That(order.OrderDate, Is.Not.EqualTo(changedOrderDate));
Assert.That(order.ShipDate, Is.Not.EqualTo(changedShipDate));
}
}
}
public void UnitOfWork_Rolledback_When_Containing_TransactionScope_Is_Rolledback()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
DateTime oldDate;
using (var txScope = new TransactionScope(TransactionScopeOption.Required))
using (var uowScope = new UnitOfWorkScope(IsolationLevel.Serializable))
{
var ordersRepository = new Db4oRepository<Order>();
var order = (from o in ordersRepository
select o).First();
oldDate = order.OrderDate;
order.OrderDate = DateTime.Now;
orderId = order.OrderID;
uowScope.Commit();
//Note: txScope has not been committed
}
using (new UnitOfWorkScope())
{
var ordersRepository = new Db4oRepository<Order>();
var order = (from o in ordersRepository
where o.OrderID == orderId
select o).First();
Assert.That(order.OrderDate, Is.EqualTo(oldDate));
}
}
}
public void Save_Updates_Existing_Order_Record()
{
var updatedDate = DateTime.Now;
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
int orderId;
using (var scope = new UnitOfWorkScope())
{
var orderRepository = new Db4oRepository<Order>();
var order = orderRepository.FirstOrDefault();
Assert.That(order, Is.Not.Null);
orderId = order.OrderID;
order.OrderDate = updatedDate;
orderRepository.Save(order); //Db4o does not do change tracking!
scope.Commit();
}
using (new UnitOfWorkScope())
{
var orderRepository = new Db4oRepository<Order>();
var order = (from o in orderRepository
where o.OrderID == orderId
select o).FirstOrDefault();
Assert.That(order, Is.Not.Null);
Assert.That(order.OrderDate.Date, Is.EqualTo(updatedDate.Date));
Assert.That(order.OrderDate.Hour, Is.EqualTo(updatedDate.Hour));
Assert.That(order.OrderDate.Minute, Is.EqualTo(updatedDate.Minute));
Assert.That(order.OrderDate.Second, Is.EqualTo(updatedDate.Second));
}
}
}
public void Query_Using_Specifications_With_Closure_Works()
{
//This test demonstrates how closures can be used to modify a pre-defined specification using
//parameters. The specification in this test searches for all customers in the state specified by
//the queryState local variable. The test then proceeds to build a query using the specification
//and enumerates over the states array and executes the query by changing the queryState parameter.
var states = new[] { "PA", "LA" };
var queryState = string.Empty;
var spec = new Specification<Order>((order) => order.Customer.Address.State == queryState);
var repository = new Db4oRepository<Order>();
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
{
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("PA", 2));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("DE", 5));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("LA", 3));
});
var query = repository.With(x => x.Customer).Query(spec);
states.ForEach(testState =>
{
queryState = testState;
var results = query.ToArray();
results.ForEach(result =>
Assert.That(result.Customer.Address.State, Is.EqualTo(testState)));
});
}
}
public void Query_Using_QueryMethod_Returns_Matched_Records_Only()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
{
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("PA", 2));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("DE", 5));
actions.CreateOrdersForCustomers(actions.CreateCustomersInState("LA", 3));
});
var customersInPA = new Specification<Order>(x => x.Customer.Address.State == "DE");
var ordersRepository = new Db4oRepository<Order>();
var results = from order in ordersRepository.Query(customersInPA) select order;
Assert.That(results.Count(), Is.GreaterThan(0));
Assert.That(results.Count(), Is.EqualTo(5));
}
}
public void Query_Allows_Projection_Using_Select_Projection()
{
using (var testData = new Db4oTestDataGenerator(_db4oServer.OpenClient()))
using (new UnitOfWorkScope())
{
testData.Batch(actions =>
actions.CreateOrderForCustomer(actions.CreateCustomer()));
var ordersRepository = new Db4oRepository<Order>();
var results = from order in ordersRepository
select new
{
order.Customer.FirstName,
order.Customer.LastName,
order.ShipDate,
order.OrderDate
};
Assert.DoesNotThrow(() => results.ForEach(x =>
{
Assert.That(string.IsNullOrEmpty(x.LastName), Is.False);
Assert.That(string.IsNullOrEmpty(x.FirstName), Is.False);
}));
}
}