public void NestedBufferTest()
{
using (var temp = TempDirectory.Create())
{
var colChanges = 0;
var colUpdates = 0;
var col = new ItemCollection <DatabaseObject>(temp.TempPath);
col.ItemUpdated += (e, args) => colUpdates++;
col.ItemCollectionChanged += (e, args) => colChanges++;
var item = new DatabaseObject();
col.BeginBufferUpdate();
col.BeginBufferUpdate();
col.BeginBufferUpdate();
col.Add(item);
col.Update(item);
col.EndBufferUpdate();
Assert.AreEqual(0, colChanges);
Assert.AreEqual(0, colChanges);
col.EndBufferUpdate();
Assert.AreEqual(0, colChanges);
Assert.AreEqual(0, colChanges);
col.EndBufferUpdate();
Assert.AreEqual(1, colUpdates);
Assert.AreEqual(1, colChanges);
col.BeginBufferUpdate();
col.Update(item);
col.EndBufferUpdate();
Assert.AreEqual(2, colUpdates);
}
}
public void BufferConsolidationTest()
{
using (var temp = TempDirectory.Create())
{
ItemCollectionChangedEventArgs <DatabaseObject> colChanges = null;
ItemUpdatedEventArgs <DatabaseObject> colUpdates = null;
var col = new ItemCollection <DatabaseObject>(temp.TempPath);
col.ItemUpdated += (e, args) => colUpdates = args;
col.ItemCollectionChanged += (e, args) => colChanges = args;
var item = new DatabaseObject()
{
Name = "Original"
};
col.Add(item);
col.BeginBufferUpdate();
item.Name = "Change1";
col.Update(item);
item.Name = "Change2";
col.Update(item);
col.EndBufferUpdate();
Assert.AreEqual(1, colUpdates.UpdatedItems.Count);
Assert.AreEqual("Original", colUpdates.UpdatedItems[0].OldData.Name);
Assert.AreEqual("Change2", colUpdates.UpdatedItems[0].NewData.Name);
}
}
public void EventsArgsBufferedTest()
{
using (var temp = TempDirectory.Create())
{
ItemCollectionChangedEventArgs <DatabaseObject> itemColArgs = null;
ItemUpdatedEventArgs <DatabaseObject> itemUpdateArgs = null;
var col = new ItemCollection <DatabaseObject>(temp.TempPath);
col.ItemUpdated += (e, args) => itemUpdateArgs = args;
col.ItemCollectionChanged += (e, args) => itemColArgs = args;
var item = new DatabaseObject();
col.BeginBufferUpdate();
col.Add(item);
col.Update(item);
col.Update(item);
col.Remove(item);
Assert.IsNull(itemColArgs);
Assert.IsNull(itemUpdateArgs);
col.EndBufferUpdate();
Assert.AreEqual(1, itemColArgs.AddedItems.Count);
Assert.AreEqual(1, itemColArgs.RemovedItems.Count);
Assert.AreEqual(2, itemUpdateArgs.UpdatedItems.Count);
}
}
public void EventsInvokeCountBufferedTest()
{
using (var temp = TempDirectory.Create())
using (var col = new ItemCollection <DatabaseObject>(Path.Combine(temp.TempPath, "db"), null))
{
var itemUpdates = 0;
var colUpdates = 0;
col.ItemUpdated += (e, args) => itemUpdates++;
col.ItemCollectionChanged += (e, args) => colUpdates++;
var item = new DatabaseObject();
col.BeginBufferUpdate();
col.Add(item);
col.Update(item);
col.Remove(item);
Assert.AreEqual(0, itemUpdates);
Assert.AreEqual(0, colUpdates);
col.EndBufferUpdate();
Assert.AreEqual(1, itemUpdates);
Assert.AreEqual(1, colUpdates);
}
}