public void TestCollections()
{
var numbers = new EditableCollection <int>();
var results = new EditableCollection <int>();
using (results.SyncWith(numbers, x => x))
{
var viewableResults = results.AsViewableCollection();
// when doing more than one change:
// use beginupdate/endupdate to reduce syncing events
numbers.BeginUpdate();
try
{
numbers.Add(4);
numbers.Add(7);
}
finally
{
numbers.EndUpdate();
}
// Magically results (x) are already added to the Results list
CollectionAssert.AreEqual(numbers, viewableResults);
// You can't add a result to the public Results list
// Results.Add(17);
// again: change source collection:
numbers.Add(8);
// synced results collection is already updated.
CollectionAssert.AreEqual(numbers, viewableResults);
}
}
public void TestEventsFired()
{
bool eventFired = false;
var sampleData = GenerateSampleData(10);
IEditableCollection <int> sourceCollection = new EditableCollection <int>();
IEditableCollection <int> targetCollection = new EditableCollection <int>();
var syncer = targetCollection.SyncWith(sourceCollection, (itemB) => itemB);
syncer.Synced += delegate(object sender, SyncEventArgs <int, int> args) { eventFired = true; };
sourceCollection.Add(sampleData[0]);
Assert.AreEqual(true, eventFired);
eventFired = false;
sourceCollection.Remove(sampleData[0]);
Assert.AreEqual(true, eventFired);
eventFired = false;
sourceCollection.BeginUpdate();
sourceCollection.Add(sampleData[0]);
sourceCollection.Add(sampleData[1]);
sourceCollection.EndUpdate();
Assert.AreEqual(true, eventFired);
}
public void TestSyncerChain()
{
var sampleData = GenerateSampleData(10);
IEditableCollection <int> sourceCollection = new EditableCollection <int>();
IEditableCollection <int> interCollection = new EditableCollection <int>();
IEditableCollection <int> targetCollection = new EditableCollection <int>();
var syncer1 = targetCollection.SyncWith(interCollection, (itemB) => itemB);
var syncer2 = interCollection.SyncWith(sourceCollection, (itemB) => itemB);
sourceCollection.BeginUpdate();
sourceCollection.Add(sampleData[0]);
sourceCollection.Add(sampleData[1]);
sourceCollection.Add(sampleData[2]);
CollectionAssert.AreNotEqual(sourceCollection, targetCollection);
sourceCollection.Remove(sampleData[0]);
CollectionAssert.AreNotEqual(sourceCollection, targetCollection);
bool eventFired = false;
syncer1.Synced += delegate(object sender, SyncEventArgs <int, int> args) { eventFired = true; };
sourceCollection.EndUpdate();
Assert.AreEqual(true, eventFired);
CollectionAssert.AreEqual(sourceCollection, targetCollection);
sourceCollection.AddRange(sampleData);
CollectionAssert.AreEqual(sourceCollection, targetCollection);
sourceCollection.Clear();
CollectionAssert.AreEqual(sourceCollection, targetCollection);
}
public void TestBatchUpdate()
{
var sampleData = GenerateSampleData(10);
IEditableCollection <int> sourceCollection = new EditableCollection <int>();
IEditableCollection <int> targetCollection = new EditableCollection <int>();
var syncer = targetCollection.SyncWith(sourceCollection, (itemB) => itemB);
sourceCollection.BeginUpdate();
sourceCollection.Add(sampleData[0]);
sourceCollection.Add(sampleData[1]);
sourceCollection.Add(sampleData[2]);
CollectionAssert.AreNotEqual(sourceCollection, targetCollection);
sourceCollection.Remove(sampleData[0]);
sourceCollection.Remove(sampleData[2]);
CollectionAssert.AreNotEqual(sourceCollection, targetCollection);
sourceCollection.EndUpdate();
CollectionAssert.AreEqual(sourceCollection, targetCollection);
}