public void AddingItemMessageHandler_WhenInvoked_AddsNewItemToAdvertisementCollection()
{
// Arrange
var repository = GetNewspaperRepository();
var message = new AddingAdvertisementItemMessage();
var collectionViewModel = new AdvertisementCollectionViewModel(repository);
collectionViewModel.Advertisements.Count.Should().Be(0, "There are no items in the collection initially.");
// Act
Messenger.Default.Send(message);
// Assert
collectionViewModel.Advertisements.Count.Should().Be(1, "A new item should have been added to the collection.");
collectionViewModel.Advertisements.First().Name.Should().Be(Advertisement.MSG_NEW_ADVERTISEMENT_NAME,
"The new item should be a new Advertisement.");
}
private void AddingItemMessageHandler(AddingAdvertisementItemMessage obj)
{
var model = new Advertisement();
var vm = new AdvertisementItemViewModel(_adRepository) {Model = model};
Advertisements.Add(vm);
var sortedAds = Advertisements.OrderBy(a => a.Name).ToList();
Advertisements.Clear();
sortedAds.ForEach(Advertisements.Add);
Messenger.Default.Send(new CurrentAdvertisementItemChangedMessage(vm));
}
