public void AddAdvertisement_WithValidAd_AddsCurrentNewspaperItemToNewspapersCollectionInTheAddedAd()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
var paperModel1 = new Newspaper() {Name = "New paper 1"};
var paperItemViewModel1 = new NewspaperItemViewModel(repository) {Model = paperModel1};
var adModel = new Advertisement() {Name = "Ad 1 Name", Text = "Ad 1 text."};
var adItemViewModel = new AdvertisementItemViewModel(repository) {Model = adModel};
collectionViewModel.Newspapers.Add(paperItemViewModel1);
collectionViewModel.CurrentItem.Should().Be(paperItemViewModel1, "The current item is the item that was added.");
detailViewModel.ItemViewModel.Should().Be(collectionViewModel.CurrentItem,
"The detail view model references the collection's current item.");
paperItemViewModel1.Advertisements.Count.Should().Be(0, "No newspapers are referenced in the advertisement.");
adItemViewModel.Newspapers.Count.Should().Be(0, "There are no papers in this ad's collection.");
// Act
paperItemViewModel1.Advertisements.Add(adItemViewModel);
// Assert
paperItemViewModel1.Advertisements.Count.Should().Be(1, "One item was added");
adItemViewModel.Newspapers.Count.Should().Be(1, "One newspaper reference was added to this advertisement.");
adItemViewModel.Newspapers.ToList().First().Should().Be(collectionViewModel.CurrentItem,
"The paper added to the advertisment's newspaper collection was the Newspaper collection's CurrentItem");
}
public void AddItemCommand_WhenInvoked_SendsMessageOfTypeAddingItemMessage()
{
var msgSent = false;
var repository = Substitute.For<INewspaperAdRepository>();
Messenger.Default.Register<AddingNewspaperItemMessage>(this, (message) => { msgSent = true; });
// Act
var viewModel = new NewspaperDetailViewModel(repository);
viewModel.AddItemCommand.Execute(null);
// Assert
msgSent.Should().Be(true, "The message was sent.");
}
public void NewspaperDetailItem_OnCreate_SendsNewspaperDetailViewModelReadyMessage()
{
// Arrange
var messageSent = false;
var repository = Substitute.For<INewspaperAdRepository>();
Messenger.Default.Register<NewspaperDetailViewModelReady>(this, (newspaperReady) => { messageSent = true; });
// Act
var detailViewModel = new NewspaperDetailViewModel(repository);
// Assert
messageSent.Should().Be(true, "The message was sent.");
}
public void AddItemCommand_WhenInvokedAgainstEmptyNewspapersCollection_ReturnsItemViewModelAsCurrentItemInCollection()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
// Act
detailViewModel.AddItemCommand.Execute(null);
// Assert
detailViewModel.ItemViewModel.Should().Be(collectionViewModel.CurrentItem,
"The detail view model should be the CurrentItem in the collection.");
}
public void AddingItemMessage_WhenReceived_AddsNewNewspaperToCollection()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
var countBeforeAdd = collectionViewModel.Newspapers.Count;
countBeforeAdd.Should().Be(0, "The collection should be empty");
// Act
detailViewModel.AddItemCommand.Execute(null);
var countAfterAdd = collectionViewModel.Newspapers.Count;
// Assert
countAfterAdd.Should().Be(1, "One item should have been added.");
}
public void AddAdvertisement_WithValidAdvertisement_AddsAdvertisementToAdvertisementsCollection()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var paperModel = new Newspaper();
var adModel = new Advertisement();
var adItemViewModel = new AdvertisementItemViewModel(repository) {Model = adModel};
var adDetailViewModel = new AdvertisementDetailViewModel(repository) {ItemViewModel = adItemViewModel};
var detailViewModel = new NewspaperDetailViewModel(repository)
{ItemViewModel = new NewspaperItemViewModel(repository) {Model = paperModel}};
// Act
detailViewModel.Advertisements.Add(adItemViewModel);
// Assert
detailViewModel.Advertisements.Count.Should().Be(1, "There should be one item in the collection");
}
public void AddAdvertisement_WithValidAdvertisement_AddsNewspaperToAdvertisementNewspaperssCollection()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var paperModel = new Newspaper();
var adModel = new Advertisement();
var adItemViewModel = new AdvertisementItemViewModel(repository) {Model = adModel};
var adDetailViewModel = new AdvertisementDetailViewModel(repository) {ItemViewModel = adItemViewModel};
var detailViewModel = new NewspaperDetailViewModel(repository)
{ItemViewModel = new NewspaperItemViewModel(repository) {Model = paperModel}};
// Act
detailViewModel.Advertisements.Add(adItemViewModel);
// Assert
detailViewModel.Advertisements.ToList().First().Newspapers.Contains(detailViewModel.ItemViewModel);
}
public void NewspaperDetailItem_WhenNewspaperCurrentItemChangedMessageReceived_ResetsItemViewModelToValueSentInMessage()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
var paperModel1 = new Newspaper() {Name = "New paper 1"};
var paperModel2 = new Newspaper() {Name = "New paper 2"};
var paperItemViewModel1 = new NewspaperItemViewModel(repository) {Model = paperModel1};
var paperItemViewModel2 = new NewspaperItemViewModel(repository) {Model = paperModel2};
collectionViewModel.Newspapers.Add(paperItemViewModel1);
collectionViewModel.Newspapers.Add(paperItemViewModel2);
collectionViewModel.CurrentItem.Should().Be(paperItemViewModel2);
// Act
collectionViewModel.CurrentItem = paperItemViewModel1;
// Assert
detailViewModel.ItemViewModel.Should().Be(paperItemViewModel1);
}
public void CancelCommand_WhenInvoked_ResetsNameToCollectionCurrentValue()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
detailViewModel.AddItemCommand.Execute(null);
collectionViewModel.CurrentItem.Should().Be(detailViewModel.ItemViewModel,
"The detail model points to the Collection CurrentItem");
var oldName = collectionViewModel.CurrentItem.Name;
var newName = "Changed Newspaper Name";
detailViewModel.Name = newName;
collectionViewModel.CurrentItem.Name.Should().Be(oldName, "Name in the collection should not change");
detailViewModel.Name.Should().Be(newName, "Alteration is reflected in the detail view model");
// Act
detailViewModel.CancelItemCommand.Execute(null);
// Assert
detailViewModel.Name.Should().Be(oldName, "The Newspaper name should revert back");
collectionViewModel.CurrentItem.Should().Be(detailViewModel.ItemViewModel,
"The entire instance should have reverted back to the original value");
}
public void RemoveNewspaper_WithExistingNewspaperInNewspapersCollection_RemovesNewspaperFromNewspapersCollection()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var advertisementModel = new Advertisement();
var paperModel1 = new Newspaper();
var newspaperItemViewModel1 = new NewspaperItemViewModel(repository) {Model = paperModel1};
var paperModel2 = new Newspaper();
var newspaperItemViewModel2 = new NewspaperItemViewModel(repository) {Model = paperModel2};
var adDetailViewModel = new NewspaperDetailViewModel(repository) {ItemViewModel = newspaperItemViewModel1};
var detailViewModel = new AdvertisementDetailViewModel(repository)
{ItemViewModel = new AdvertisementItemViewModel(repository) {Model = advertisementModel}};
detailViewModel.Newspapers.Add(newspaperItemViewModel1);
detailViewModel.Newspapers.Add(newspaperItemViewModel2);
detailViewModel.Newspapers.Should().BeEquivalentTo(new List<NewspaperItemViewModel>
{newspaperItemViewModel1, newspaperItemViewModel2});
// Act
detailViewModel.Newspapers.Remove(newspaperItemViewModel1);
// Assert
detailViewModel.Newspapers.Should().BeEquivalentTo(new List<NewspaperItemViewModel> {newspaperItemViewModel2});
}
public void Name_WhenNullOrEmpty_SetsAllowSaveToFalse()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var model = new Newspaper();
var itemViewModel = new NewspaperItemViewModel(repository) {Model = model};
var viewModel = new NewspaperDetailViewModel(repository) {ItemViewModel = itemViewModel};
viewModel.AllowSave.Should().Be(true, "We have a valid name to reference.");
// Act
viewModel.Name = "";
// Assert
viewModel.AllowSave.Should().Be(false, "Cannot save an newspaper without a name.");
}
public void NewspaperDetailViewModel_WhenCreated_SendsDetailViewModelReadyMessage()
{
// Arrange
var msgSent = false;
//NewspaperDetailViewModelReady msg = null;
var repository = Substitute.For<INewspaperAdRepository>();
Messenger.Default.Register<NewspaperDetailViewModelReady>(this, (message) => { msgSent = true; });
// Act
var viewModel = new NewspaperDetailViewModel(repository);
// Assert
msgSent.Should().Be(true, "The message was sent.");
}
public void RemoveAdvertisement_WithExistingAdvertisementInAdvertisementsCollection_RemovesNewspaperFromAdvertisementRemoved()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var paperModel = new Newspaper();
var adModel1 = new Advertisement();
var adItemViewModel1 = new AdvertisementItemViewModel(repository) {Model = adModel1};
var adModel2 = new Advertisement();
var adItemViewModel2 = new AdvertisementItemViewModel(repository) {Model = adModel2};
var adDetailViewModel = new AdvertisementDetailViewModel(repository) {ItemViewModel = adItemViewModel1};
var detailViewModel = new NewspaperDetailViewModel(repository)
{ItemViewModel = new NewspaperItemViewModel(repository) {Model = paperModel}};
detailViewModel.Advertisements.Add(adItemViewModel1);
detailViewModel.Advertisements.Add(adItemViewModel2);
detailViewModel.Advertisements.Should().BeEquivalentTo(new List<AdvertisementItemViewModel>
{adItemViewModel1, adItemViewModel2});
detailViewModel.Advertisements.ToList().All(a => a.Newspapers.Contains(detailViewModel.ItemViewModel));
// Act
detailViewModel.Advertisements.Remove(adItemViewModel1);
// Assert
detailViewModel.Advertisements.Should().BeEquivalentTo(new List<AdvertisementItemViewModel> {adItemViewModel2});
}
public void SaveCommand_WhenInvoked_UpdatesNewspaperNameInCollectionCurrentItem()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
detailViewModel.AddItemCommand.Execute(null);
var originalName = detailViewModel.Name;
var newName = "Changed Newspaper Name";
detailViewModel.Name = newName;
Newspaper model = null;
collectionViewModel.CurrentItem.Name.Should().Be(originalName, "Name does not change until Save command.");
detailViewModel.ItemViewModel.Name.Should().Be(originalName, "Name does not change until Save command.");
repository.WhenForAnyArgs(r => r.Save(detailViewModel.ItemViewModel.Model)).Do(
(newspaper) => { model = (Newspaper) newspaper.Args()[0]; });
// Act
detailViewModel.SaveItemCommand.Execute(new SaveNewspaperItemMessage(detailViewModel.ItemViewModel));
// Assert
detailViewModel.Name.Should().Be(detailViewModel.ItemViewModel.Name, "ItemViewModel should have been updated");
detailViewModel.ItemViewModel.Should().Be(collectionViewModel.CurrentItem,
"CurrentItem should be the same as detail ItemViewModel");
repository.Received().Save(detailViewModel.ItemViewModel.Model);
}
public void Name_WhenNotNullOrEmpty_SetsAllowAddToTrue()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var model = new Newspaper();
var itemViewModel = new NewspaperItemViewModel(repository) {Model = model};
// Act
var viewModel = new NewspaperDetailViewModel(repository) {ItemViewModel = itemViewModel};
// Assert
viewModel.AllowSave.Should().Be(true, "We have a valid name to reference.");
}
public void SaveCommand_WhenInvoked_UpdatesCollectionCurrentItemWithNewValue()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
var detailViewModel = new NewspaperDetailViewModel(repository);
var collectionViewModel = new NewspaperCollectionViewModel(repository);
detailViewModel.AddItemCommand.Execute(null);
collectionViewModel.CurrentItem.Should().Be(detailViewModel.ItemViewModel,
"The detail model points to the Collection CurrentItem");
var oldName = collectionViewModel.CurrentItem.Name;
var newName = "Changed Newspaper Name";
detailViewModel.Name = newName;
// Act
detailViewModel.SaveItemCommand.Execute(null);
// Assert
collectionViewModel.CurrentItem.Should().Be(detailViewModel.ItemViewModel,
"The current item in the collection matches the one in the detail view model.");
repository.Received().Save(detailViewModel.ItemViewModel.Model);
}
public void ViewModel_WithNullItemViewModel_SetsAllowSaveToFalse()
{
// Arrange
var repository = Substitute.For<INewspaperAdRepository>();
// Act
var viewModel = new NewspaperDetailViewModel(repository);
// Assert
viewModel.AllowSave.Should().Be(false, "If not item view model set, do not allow a Save to be called.");
}