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 DeleteCommand_WhenItemDeletedFromTheCollection_CallsRepositoryDelete()
{
var repository = Substitute.For<INewspaperAdRepository>();
repository.GetAllAdvertisements().Returns(new List<Advertisement>());
bool deleteCalled;
Newspaper deletedModel;
var model1 = new Newspaper {Name = "Paper 1"};
var model2 = new Newspaper {Name = "Paper 2"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var paperItemVm2 = new NewspaperItemViewModel(repository) {Model = model2};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
repository.When(x => x.Delete(model1)).Do(x => RepositoryUpdateFields(x, out deleteCalled, out deletedModel));
collectionViewModel.Newspapers.Add(paperItemVm1);
collectionViewModel.Newspapers.Add(paperItemVm2);
// Act
collectionViewModel.Newspapers.Remove(paperItemVm1);
paperItemVm1.DbStatus.Should().Be(DbModificationState.Deleted, "State of object should be deleted.");
// Assert
repository.Received().Save(model1);
}
public NewspaperViewModel(Newspaper model, IRepository<Newspaper, Guid> repository)
: base(model)
{
_model = model;
_repository = repository;
SaveCommand = new RelayCommand(new Action<object>(SaveCommand_Handler));
DeleteCommand = new RelayCommand(new Action<object>(DeleteCommand_Handler));
}
public void AddNewspaper(Newspaper paper)
{
if (paper == null)
{
return;
}
_newspapers.Add(paper);
}
public void AddNewspaper_MultipleTimesWithValidNewspaperObjects_CreatesAReferenceToEachPaper()
{
// Arrange
var paper1 = new Newspaper() {Name = "Paper 1 name"};
var paper2 = new Newspaper() {Name = "Paper 2 name"};
var ad = new Advertisement {Name = "Test ad 1 name", Text = "Test ad 1 text."};
// Act
ad.AddNewspaper(paper1);
ad.AddNewspaper(paper2);
// Assert
ad.Newspapers.ShouldBeEquivalentTo(new List<Newspaper> {paper2, paper1});
}
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 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 AddNewspapers_WithListOfValidNewspaperstestAddsAllItemsToNewspapersCollection()
{
// Arrange
var paper1 = new Newspaper() {Name = "Paper 1 name"};
var paper2 = new Newspaper() {Name = "Paper 2 name"};
var paper3 = new Newspaper() {Name = "Paper 3 name"};
var paperList = new List<Newspaper> {paper1, paper2, paper3};
var ad = new Advertisement {Name = "Test ad 1 name", Text = "Test ad 1 text."};
// Act
ad.AddNewspapers(paperList);
//Assert
ad.Newspapers.ShouldAllBeEquivalentTo(paperList);
}
public void AddNewspapers_WithNullNewspaperList_ReturnsTheOriginalNewspapersCollection()
{
// Arrange
var paper1 = new Newspaper() {Name = "Paper 1 name"};
var paper2 = new Newspaper() {Name = "Paper 2 name"};
var paper3 = new Newspaper() {Name = "Paper 3 name"};
var ad = new Advertisement {Name = "Test ad 1 name", Text = "Test ad 1 text."};
var paperList = new List<Newspaper> {paper1, paper3, paper2};
ad.AddNewspaper(paper1);
ad.AddNewspaper(paper2);
ad.AddNewspaper(paper3);
// Act
ad.AddNewspapers(null);
// Assert
ad.Newspapers.ShouldAllBeEquivalentTo(paperList);
}
public void CurrentItem_AfterDeletingLastItemOnNewspapersCollection_SetToLastItemInNewspapersCollection()
{
// Arrange
var repository = GetNewspaperRepository();
var model1 = new Newspaper {Name = "Paper 1"};
var model2 = new Newspaper {Name = "Paper 2"};
var model3 = new Newspaper {Name = "Paper 3"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var paperItemVm2 = new NewspaperItemViewModel(repository) {Model = model2};
var paperItemVm3 = new NewspaperItemViewModel(repository) {Model = model3};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.Newspapers.Add(paperItemVm1);
collectionViewModel.Newspapers.Add(paperItemVm2);
collectionViewModel.Newspapers.Add(paperItemVm3);
collectionViewModel.CurrentItem.Should().Be(paperItemVm3, "CurrentItem should be the last item added.");
// Act
collectionViewModel.Newspapers.Remove(paperItemVm3);
// Assert
collectionViewModel.CurrentItem.Should().Be(paperItemVm2,
"Removing the last entry makes the current last entry the CurrentItem");
}
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 SaveCommand_WhenPopulatedAndNewItemAdded_IsExecuted()
{
// Arrange
var saveCommandCalled = false;
var repository = GetNewspaperRepository();
var model1 = new Newspaper {Name = "Paper 1"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.SaveCommand = new RelayCommand(() => { saveCommandCalled = true; });
// Act
collectionViewModel.Newspapers.Add(paperItemVm1);
// Assert
repository.Received().Save(model1);
}
public void SelectedItemChangedHandler_WhenCollectionChanged_IsCalled()
{
// Arrange
var repository = GetNewspaperRepository();
var collectionChangedCalled = false;
var model1 = new Newspaper {Name = "Paper 1"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.SelectedItemChangedCommand =
new RelayCommand<RoutedPropertyChangedEventArgs<object>>((args) => { collectionChangedCalled = true; });
collectionViewModel.Newspapers.Add(paperItemVm1);
// Act
collectionViewModel.SelectedItemChangedCommand.Execute(null);
// Assert
collectionChangedCalled.Should().Be(true, "The event was called");
}
private void AddingNewspaperItemMessageHandler(AddingNewspaperItemMessage message)
{
var model = new Newspaper();
var vm = new NewspaperItemViewModel(_adRepository) {Model = model};
Newspapers.Add(vm);
var sortedNewspapers = Newspapers.OrderBy(n => n.Name).ToList();
Newspapers.Clear();
sortedNewspapers.ForEach(Newspapers.Add);
Messenger.Default.Send(new CurrentNewspaperItemChangedMessage(vm));
}
public void RemovingItemMessageHandler_WhenInvoked_SendsCurrentItemChangedMessage()
{
// Arrange
var itemChangedMessageReceived = false;
NewspaperItemViewModel changedItemViewModel = null;
var repository = GetNewspaperRepository();
var model1 = new Newspaper {Name = "Paper 1"};
var model2 = new Newspaper {Name = "Paper 2"};
var model3 = new Newspaper {Name = "Paper 3"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var paperItemVm2 = new NewspaperItemViewModel(repository) {Model = model2};
var paperItemVm3 = new NewspaperItemViewModel(repository) {Model = model3};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.Newspapers.Add(paperItemVm1);
collectionViewModel.Newspapers.Add(paperItemVm2);
collectionViewModel.Newspapers.Add(paperItemVm3);
collectionViewModel.CurrentItem.Should().Be(paperItemVm3, "CurrentItem should be the last item added.");
collectionViewModel.Newspapers.Count.Should().Be(3, "There are now three items in the list.");
var message = new RemovingNewspaperItemMessage(paperItemVm2);
Messenger.Default.Register<CurrentNewspaperItemChangedMessage>(this, (msg) =>
{
itemChangedMessageReceived = true;
changedItemViewModel = msg.ItemViewModel;
});
// Act
Messenger.Default.Send<RemovingNewspaperItemMessage>(message);
// Assert
itemChangedMessageReceived.Should().Be(true, "The message was received from the collection view model.");
changedItemViewModel.Should().Be(collectionViewModel.CurrentItem,
"The item sent is the current item from the collection view model.");
}
private Newspaper GetExistingNewspaper()
{
var paper = new Newspaper {Name = TEST_PAPER_NAME};
paper.DbStatus = DbModificationState.Unchanged;
return paper;
}
public void RemoveAdvertisement_WithAnAdvertisementInTheAdvertisementsCollection_RemovesThatAdvertisementFromTheCollection()
{
// Arrange
var paper = new Newspaper();
var ad1 = new Advertisement {Name = "Test Ad 1 Name", Text = "Test Ad 1 Text"};
var ad2 = new Advertisement {Name = "Test Ad 2 Name", Text = "Test Ad 2 Text"};
paper.AddAdvertisement(ad1);
paper.AddAdvertisement(ad2);
// act
paper.RemoveAdvertisement(ad2);
// Assert
paper.Advertisements.Should().BeEquivalentTo(new List<Advertisement> {ad1},
"Removing the second added Ad results in only the first being left.");
}
public void Save(Newspaper entity)
{
// if (entity.DbStatus == DbModificationState.Unchanged)
// return;
if (entity.DbStatus != DbModificationState.Deleted)
{
if (_newspaperCache.ContainsKey(entity.UKey))
{
_newspaperCache[entity.UKey] = entity;
UpdateAdCacheFromPaper(entity);
var deletedAds = entity.Advertisements.ToList().Where(a => a.DbStatus == DbModificationState.Deleted).ToList();
deletedAds.ForEach(a=>entity.Advertisements.Remove(a));
OnItemChanged(entity);
}
else
{
_newspaperCache.Add(entity.UKey, entity);
UpdateAdCacheFromPaper(entity);
OnItemAdded(entity);
}
}
else
{
if (_newspaperCache.ContainsKey(entity.UKey))
{
DeleteNewspaper(entity);
UpdateAdCacheFromPaper(entity);
OnItemRemoved(entity);
}
}
_serializer.SaveCache(_newspaperCache);
}
//jlg bad logic
private void UpdateAdCacheFromPaper(Newspaper entity)
{
List<Advertisement> deletedAds = new List<Advertisement>();
foreach (var ad in entity.Advertisements)
{
switch (entity.DbStatus)
{
case DbModificationState.Unchanged:
case DbModificationState.Added:
case DbModificationState.Modified:
if(!_advertisementCache.ContainsKey(ad.UKey))
_advertisementCache.Add(ad.UKey,ad);
deletedAds.AddRange(entity.Advertisements.Where(a=>a.DbStatus==DbModificationState.Deleted));
break;
case DbModificationState.Deleted:
foreach (var cacheAd in _advertisementCache.Values.ToList())
{
cacheAd.Newspapers.Remove(entity);
}
break;
}
}
deletedAds.ForEach(a=>_advertisementCache.Remove(a.UKey));
}
private void OnItemRemoved(Newspaper paper)
{
if (ItemRemoved != null)
ItemRemoved(this, new RepositoryItemRemovedEventArgs {Entity = paper});
}
private void DeleteNewspaper(Newspaper entity)
{
if (_newspaperCache.ContainsKey(entity.UKey))
{
_newspaperCache.Remove(entity.UKey);
foreach (var ad in entity.Advertisements)
_advertisementCache[ad.UKey].Newspapers.Remove(entity);
}
_serializer.SaveCache(_newspaperCache);
}
private NewspaperItemViewModel GetValidNewspaperItemViewModel(Newspaper paper = null,
INewspaperAdRepository adRepository = null)
{
var model = paper ?? new Newspaper() {Name = "<New Newspaper>"};
var repo = adRepository ?? Substitute.For<INewspaperAdRepository>();
return new NewspaperItemViewModel(repo) {Model = model};
}
public void Name_WhenModifiedFromValidToInvalidChangesHasErrors_PerformsErrorsChangedCallback()
{
// Arrange
const string PAPER_NAME = "Paper 1 name";
const string NEW_PAPER_NAME = "";
var errorChangedCalled = false;
var paper = new Newspaper() {Name = PAPER_NAME};
paper.ErrorsChanged += delegate(object sender, DataErrorsChangedEventArgs e) { errorChangedCalled = true; };
paper.Name = NEW_PAPER_NAME;
errorChangedCalled.Should().Be(true, "Event callback should have occurred.");
}
public void Name_WhenModified_PerformsPropertyChangedCallback()
{
// Arrange
const string PAPER_NAME = "Paper 1 name";
const string NEW_PAPER_NAME = "New paper 1 name";
var paper = new Newspaper() {Name = PAPER_NAME};
var eventAssert = new PropertyChangedEventAssert(paper);
paper.Name.Should().Be(PAPER_NAME, "Ad name set properly");
eventAssert.ExpectNothing();
paper.Name = NEW_PAPER_NAME;
eventAssert.Expect("Name");
}
public void Newspapers_SetToNull_SetsNewspapersToAnEmptyCollection()
{
// Arrange
var testAd = new Advertisement {Name = "Test ad 1 name", Text = "Test ad 1 text."};
var testPaper1 = new Newspaper() {Name = "Test Paper 1 Name"};
var testPaper2 = new Newspaper() {Name = "Test Paper 2 Name"};
var testPaper3 = new Newspaper() {Name = "Test Paper 3 Name"};
testAd.Newspapers = new ObservableCollection<Newspaper>() {testPaper1, testPaper2, testPaper3};
testAd.Newspapers.Count.Should().Be(3, "All papers were added to the ad");
// Act
testAd.Newspapers = null;
// Assert
testAd.Newspapers.ShouldBeEquivalentTo(new List<Newspaper>(),
"Newspaper collection is set to empty list when null is assigned to it.");
}
public void RemoveAdvertisement_WithANullAdvertisement_DoesNotChangeTheAdvertisementsConnection()
{
// Arrange
var paper = new Newspaper();
var ad1 = new Advertisement {Name = "Test Ad 1 Name", Text = "Test Ad 1 Text"};
var ad2 = new Advertisement {Name = "Test Ad 2 Name", Text = "Test Ad 2 Text"};
paper.AddAdvertisement(ad1);
paper.AddAdvertisement(ad2);
// act
paper.RemoveAdvertisement(null);
// Assert
paper.Advertisements.Should().BeEquivalentTo(new List<Advertisement> {ad1, ad2},
"Removing a null item results in nothing being removed.");
}
public void SelectedItemChangedHandler_WhenInvoked_SetsCurrentItemToNewSelection()
{
// Arrange
var repository = GetNewspaperRepository();
var model1 = new Newspaper {Name = "Paper 1"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.CurrentItem.Should().Be(null, "There is no current item in an empty list.");
// Act
collectionViewModel.Newspapers.Add(paperItemVm1);
// Assert
collectionViewModel.CurrentItem.Should().Be(paperItemVm1, "The current item is now");
}
public void AddNewspaper(Newspaper paperModel)
{
if (paperModel == null)
return;
}
public void AddNewspaper_WithValidNewspaperObject_CreatesAReferenceToThatNewspaper()
{
// Arrange
var paper = new Newspaper() {Name = "Test Paper 1"};
var advertisement = new Advertisement {Name = "Test Ad 1", Text = "Test ad 1 text."};
// Act
advertisement.AddNewspaper(paper);
//Assert
advertisement.Newspapers.ShouldAllBeEquivalentTo(new List<Newspaper> {paper},
"A paper added to an advertisement adds a reference to that paper.");
}
private static NewspaperViewModel GetNewspaperViewModel(Newspaper paper, IRepository<Newspaper, Guid> repository = null)
{
var repo = repository ?? Substitute.For<IRepository<Newspaper, Guid>>();
return new NewspaperViewModel(paper, repo);
}
public void CurrentItem_AfterDeletingNotLastExistingItem_IsTheFollowingItem()
{
// Arrange
var repository = GetNewspaperRepository();
var model1 = new Newspaper {Name = "Paper 1"};
var model2 = new Newspaper {Name = "Paper 2"};
var model3 = new Newspaper {Name = "Paper 3"};
var model4 = new Newspaper {Name = "Paper 4"};
var paperItemVm1 = new NewspaperItemViewModel(repository) {Model = model1};
var paperItemVm2 = new NewspaperItemViewModel(repository) {Model = model2};
var paperItemVm3 = new NewspaperItemViewModel(repository) {Model = model3};
var paperItemVm4 = new NewspaperItemViewModel(repository) {Model = model4};
var collectionViewModel = new NewspaperCollectionViewModel(repository);
collectionViewModel.Newspapers.Add(paperItemVm1);
collectionViewModel.Newspapers.Add(paperItemVm2);
collectionViewModel.Newspapers.Add(paperItemVm3);
collectionViewModel.Newspapers.Add(paperItemVm4);
collectionViewModel.CurrentItem.Should().Be(paperItemVm4, "CurrentItem should be the last item added.");
// Act
collectionViewModel.Newspapers.Remove(paperItemVm2);
// Assert
collectionViewModel.CurrentItem.Should().Be(paperItemVm3,
"CurrentItem should be the first item following the one removed");
}