public void TestSetMemento()
{
IDomainObjectMementoService service = DomainObjectMementoService.GetInstance();
Customer customer = new Customer(null)
{
Name = "John Doe", Number = "123"
};
IDomainObjectMemento snapshotMemento = service.CreateMemento(customer);
//Test original
Assert.AreEqual("John Doe", customer.Name);
Assert.AreEqual("123", customer.Number);
//Alter
customer.Name = "Juan dela Cruz";
customer.Number = "345";
//Test altered persistency
Assert.AreEqual("Juan dela Cruz", customer.Name);
Assert.AreEqual("345", customer.Number);
//Restore
IDomainObject domainObject = customer;
service.SetMemento(ref domainObject, snapshotMemento);
//Test original
IDomainObjectMemento latestSnapshotMemento = service.CreateMemento(customer);
Assert.AreEqual("John Doe", customer.Name);
Assert.AreEqual("123", customer.Number);
Assert.AreEqual(snapshotMemento.HashCode, latestSnapshotMemento.HashCode);
}
public void TestCreateMemento()
{
IDomainObjectMementoService service = DomainObjectMementoService.GetInstance();
Customer customer = new Customer(null)
{
Name = "John Doe", Number = "123"
};
IDomainObjectMemento memento = service.CreateMemento(customer);
Assert.AreEqual("John Doe", memento.GetPropertyValue("Name"));
Assert.AreEqual("123", memento.GetPropertyValue("Number"));
}
public void SetMemento <TEntity>(ref TEntity entity, IDomainObjectMemento memento)
where TEntity : IDomainObject
{
if (entity == null)
{
throw new ArgumentNullException("'entity' parameter is required");
}
if (memento == null)
{
throw new ArgumentNullException("'memento' parameter is required");
}
IList <string> propertyNames = memento.GetPropertyNames();
for (int index = 0; index < propertyNames.Count; index++)
{
memento.SetPropertyValue(propertyNames[index], ref entity);
}
}
