public void retainall_should_raise_propertychanged()
{
bool eventWasRaisedForCount = false;
bool eventWasRaisedForIsEmpty = false;
var observableSet = new ObservableSet <int> {
1, 2, 3, 4
};
observableSet.PropertyChanged += (sender, args) =>
{
sender.Should().Be.EqualTo(observableSet);
if (args.PropertyName == ISEMPTY_PROPERTY_NAME)
{
eventWasRaisedForIsEmpty = true;
}
if (args.PropertyName == COUNT_PROPERTY_NAME)
{
eventWasRaisedForCount = true;
}
};
observableSet.RetainAll(new[] { 2, 3 });
eventWasRaisedForIsEmpty.Should().Be.True();
eventWasRaisedForCount.Should().Be.True();
}
public void retainall_should_work()
{
ObservableSet <int> observableSet = new ObservableSet <int> {
1, 2, 3, 4, 5
};
observableSet.RetainAll(new[] { 2, 3 });
observableSet.Count.Should().Be.EqualTo(2);
observableSet.Should().Have.SameSequenceAs(new[] { 2, 3 });
}
public void retainall_should_raise_collectionchanged_for_removeditems()
{
bool eventWasRaised = false;
var observableSet = new ObservableSet <int> {
1, 2, 3, 4
};
observableSet.CollectionChanged += (sender, args) =>
{
sender.Should().Be.EqualTo(observableSet);
args.Action.Should().Be.EqualTo(NotifyCollectionChangedAction.Remove);
args.OldItems.OfType <int>().Should().Have.SameSequenceAs(new[] { 1, 4 });
args.OldItems.Count.Should().Be.EqualTo(2);
eventWasRaised = true;
};
observableSet.RetainAll(new[] { 2, 3 });
eventWasRaised.Should().Be.True();
}