public void Test_FilterBehavior_ReplacedByNull()
{
// Arrange.
var items = new ObservableCollection <string>();
var viewSource = new CollectionViewSource
{
Source = items
};
var filter = CreateFilter();
var action = new CollectionViewSourceFilter();
action.Attach(viewSource);
action.Filter = filter;
var trigger = new EventTrigger {
EventName = "Filter"
};
trigger.Attach(viewSource);
trigger.Actions.Add(action);
// Act.
action.Filter = null;
items.Add("item"); // Trigger a view refresh.
// Assert.
Assert.False(filterInvocations[0]);
}
public void Test_FilterBehavior()
{
// Arrange.
var items = new ObservableCollection <string>();
var viewSource = new CollectionViewSource
{
Source = items
};
var filter = CreateFilter();
var action = new CollectionViewSourceFilter();
action.Attach(viewSource);
action.Filter = filter;
var trigger = new EventTrigger {
EventName = "Filter"
};
trigger.Attach(viewSource);
trigger.Actions.Add(action);
// Act: trigger a view refresh (Refresh() wasn't working).
items.Add("item");
// Assert.
Assert.True(filterInvocations[0]);
}
