public void WhenNotificationSuspendedEventsShouldNotBeRaised()
{
SynchronizedNotifiableCollection <Item> collection = CreateNotifiableCollection <Item>(ExecutionMode.None, ThreadManagerMock);
var collectionTracker = new NotifiableCollectionTracker <Item>(collection);
using (collection.SuspendNotifications())
{
for (int i = 0; i < 10; i++)
{
var item = new Item();
collection.Add(item);
collection.Remove(item);
}
using (collection.SuspendNotifications())
{
collection.Add(new Item());
}
collectionTracker.ChangedItems.ShouldBeEmpty();
}
ThreadManagerMock.InvokeOnUiThreadAsync();
collectionTracker.AssertEquals();
}
public void CollectionShouldTrackChangesCorrectInSourceCollection()
{
const int count = 10;
var collection = new ObservableCollection <Item>();
var filterableCollection = new FilterableNotifiableCollection <Item>(collection, ThreadManagerMock)
{
Filter = _ => true
};
var collectionTracker = new NotifiableCollectionTracker <Item>(filterableCollection);
var item = new Item();
var items = new[] { new Item(), new Item(), new Item() };
var items2 = new[] { new Item {
Hidden = true
}, new Item(), new Item {
Hidden = true
} };
for (int i = 0; i < count; i++)
{
collection.AddRange(items);
collection.SequenceEqual(filterableCollection).ShouldBeTrue();
collection.AddRange(items2);
collection.SequenceEqual(filterableCollection).ShouldBeTrue();
collection.RemoveRange(items);
collection.SequenceEqual(filterableCollection).ShouldBeTrue();
}
for (int i = 0; i < collection.Count; i++)
{
collection[i] = item;
collection.SequenceEqual(filterableCollection).ShouldBeTrue();
}
ThreadManagerMock.InvokeOnUiThreadAsync();
collectionTracker.AssertChangedEquals();
collection.Count.ShouldEqual(count * items2.Length);
collection.Clear();
ThreadManagerMock.InvokeOnUiThreadAsync();
collection.SequenceEqual(filterableCollection).ShouldBeTrue();
collection.Count.ShouldEqual(0);
collectionTracker.AssertChangedEquals();
}
public override void CollectionShouldTrackChangesCorrect()
{
const int count = 10;
SynchronizedNotifiableCollection <Item> collection = CreateNotifiableCollection <Item>(ExecutionMode.None,
ThreadManagerMock);
var collectionTracker = new NotifiableCollectionTracker <Item>(collection);
var items = new[] { new Item(), new Item(), new Item() };
var items2 = new[] { new Item(), new Item(), new Item() };
using (collection.SuspendNotifications())
{
for (int i = 0; i < count; i++)
{
collection.AddRange(items);
collection.AddRange(items2);
collection.RemoveRange(items);
}
}
ThreadManagerMock.InvokeOnUiThreadAsync();
collectionTracker.AssertEquals();
collection.Count.ShouldEqual(count * 3);
}
public void CollectionShouldTrackChangesCorrectWithFilter()
{
const int count = 10;
var collection = (FilterableNotifiableCollection <Item>)CreateNotifiableCollection <Item>(ExecutionMode.None, ThreadManagerMock);
collection.Filter = item => !item.Hidden;
var collectionTracker = new NotifiableCollectionTracker <Item>(collection);
using (collection.SuspendNotifications())
{
var item = new Item();
var items = new[] { new Item(), new Item(), new Item() };
var items2 = new[] { new Item {
Hidden = true
}, new Item(), new Item {
Hidden = true
} };
for (int i = 0; i < count; i++)
{
collection.AddRange(items);
collection.AddRange(items2);
collection.RemoveRange(items);
}
for (int i = 0; i < collection.Count; i++)
{
collection[i] = item;
}
}
ThreadManagerMock.InvokeOnUiThreadAsync();
collectionTracker.ChangingItems.OrderBy(item => item.Id)
.SequenceEqual(collection.SourceCollection.OrderBy(item => item.Id))
.ShouldBeTrue();
collectionTracker.AssertChangedEquals();
collection.Count.ShouldEqual(count);
}
private void BasePropertyTestInternal(Func <string> getProperty, Action <string> updateProperty, string propertyName, Action <ExecutionMode> changeRaiseOnUi, bool suspend)
{
changeRaiseOnUi(ExecutionMode.None);
int count = 0;
string lastProp = null;
const string value = "value";
PropertyChanged += (sender, args) =>
{
lastProp = args.PropertyName;
count++;
};
lastProp.ShouldBeNull();
getProperty().ShouldBeNull();
updateProperty(value);
getProperty().ShouldEqual(value);
if (!suspend)
{
lastProp.ShouldEqual(propertyName);
count.ShouldEqual(1);
}
else
{
count.ShouldEqual(0);
}
//Invoke on ui thread
updateProperty(null);
changeRaiseOnUi(ExecutionMode.AsynchronousOnUiThread);
_threadManagerMock.InvokeOnUiThreadAsync();
count = 0;
lastProp = null;
updateProperty(value);
getProperty().ShouldEqual(value);
lastProp.ShouldBeNull();
if (!suspend)
{
_threadManagerMock.InvokeOnUiThreadAsync();
lastProp.ShouldEqual(propertyName);
count.ShouldEqual(1);
}
else
{
_threadManagerMock.InvokeOnUiThreadAsync();
count.ShouldEqual(0);
}
//Invoke on ui thread synchronous
updateProperty(null);
changeRaiseOnUi(ExecutionMode.SynchronousOnUiThread);
count = 0;
lastProp = null;
_threadManagerMock.InvokeOnUiThread();
updateProperty(value);
getProperty().ShouldEqual(value);
lastProp.ShouldBeNull();
if (!suspend)
{
_threadManagerMock.InvokeOnUiThread();
lastProp.ShouldEqual(propertyName);
count.ShouldEqual(1);
}
else
{
_threadManagerMock.InvokeOnUiThread();
count.ShouldEqual(0);
}
}