public void RefreshCausesReplace()
{
// Arrange
var sourceCache = new SourceCache <Item, Guid>(item => item.Id);
var item1 = new Item("Old Name");
sourceCache.AddOrUpdate(item1);
var collection = new TestBindingList <Item>();
var sourceCacheResults = sourceCache.Connect().AutoRefresh(item => item.Name).Bind(collection).AsAggregator();
var collectionResults = collection.ToObservableChangeSet().AsAggregator();
item1.Name = "New Name";
// Source cache received add and refresh
sourceCacheResults.Messages.Count.Should().Be(2);
sourceCacheResults.Messages.First().Adds.Should().Be(1);
sourceCacheResults.Messages.Last().Refreshes.Should().Be(1);
// List receives add and replace instead of refresh
collectionResults.Messages.Count.Should().Be(2);
collectionResults.Messages.First().Adds.Should().Be(1);
collectionResults.Messages.First().Refreshes.Should().Be(0);
collectionResults.Messages.Last().Replaced.Should().Be(1);
collectionResults.Messages.Last().Refreshes.Should().Be(0);
sourceCache.Dispose();
sourceCacheResults.Dispose();
collectionResults.Dispose();
}
public BindingListToChangeSetFixture()
{
_collection = new TestBindingList <int>();
_results = _collection.ToObservableChangeSet().AsAggregator();
}