public void BookListViewModelBooksTest()
{
List<Book> books = new List<Book>()
{
new Book() { Title = "The Fellowship of the Ring" },
new Book() { Title = "The Two Towers" }
};
MockBookListView bookListView = new MockBookListView();
IList<BookDataModel> bookDataModels = new SynchronizingCollection<BookDataModel, Book>(books, b => new BookDataModel(b, dummyCommand));
AssertHelper.ExpectedException<ArgumentNullException>(() => new BookListViewModel(bookListView, null));
BookListViewModel bookListViewModel = new BookListViewModel(bookListView, bookDataModels);
Assert.AreEqual(bookDataModels, bookListViewModel.Books);
Assert.IsNull(bookListViewModel.SelectedBook);
Assert.IsFalse(bookListViewModel.SelectedBooks.Any());
// Select the first book
AssertHelper.PropertyChangedEvent(bookListViewModel, x => x.SelectedBook,
() => bookListViewModel.SelectedBook = bookDataModels.First());
Assert.AreEqual(books.First(), bookListViewModel.SelectedBook.Book);
bookListViewModel.SelectedBooks.Add(bookDataModels.First());
Assert.IsTrue(bookListViewModel.SelectedBooks.SequenceEqual(new[] { bookDataModels.First() }));
// Select both books
bookListViewModel.SelectedBooks.Add(bookDataModels.Last());
Assert.IsTrue(bookListViewModel.SelectedBooks.SequenceEqual(bookDataModels));
}
public void BookListViewModelCommandsTest()
{
MockBookListView bookListView = new MockBookListView();
BookListViewModel bookListViewModel = new BookListViewModel(bookListView, new List<BookDataModel>());
DelegateCommand mockCommand = new DelegateCommand(() => { });
AssertHelper.PropertyChangedEvent(bookListViewModel, x => x.AddNewCommand, () =>
bookListViewModel.AddNewCommand = mockCommand);
Assert.AreEqual(mockCommand, bookListViewModel.AddNewCommand);
mockCommand = new DelegateCommand(() => { });
AssertHelper.PropertyChangedEvent(bookListViewModel, x => x.RemoveCommand, () =>
bookListViewModel.RemoveCommand = mockCommand);
Assert.AreEqual(mockCommand, bookListViewModel.RemoveCommand);
}
public void BookListViewModelFilterTest()
{
IList<Book> books = new ObservableCollection<Book>()
{
new Book() { Title = "The Fellowship of the Ring", Author = "J.R.R. Tolkien" },
new Book() { Title = "The Two Towers", Author = "J.R.R. Tolkien" }
};
MockBookListView bookListView = new MockBookListView();
IList<BookDataModel> bookDataModels = new SynchronizingCollection<BookDataModel, Book>(books, b => new BookDataModel(b, dummyCommand));
BookListViewModel bookListViewModel = new BookListViewModel(bookListView, bookDataModels);
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[1]));
AssertHelper.PropertyChangedEvent(bookListViewModel, x => x.FilterText, () => bookListViewModel.FilterText = "J.");
Assert.AreEqual("J.", bookListViewModel.FilterText);
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[1]));
bookListViewModel.FilterText = "J.R.R. Tolkien";
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[1]));
bookListViewModel.FilterText = "Fell";
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsFalse(bookListViewModel.Filter(bookDataModels[1]));
bookListViewModel.FilterText = "Tow";
Assert.IsFalse(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[1]));
bookListViewModel.FilterText = "xyz";
Assert.IsFalse(bookListViewModel.Filter(bookDataModels[0]));
Assert.IsFalse(bookListViewModel.Filter(bookDataModels[1]));
books.Add(new Book());
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[2]));
books[2].Title = "Serenity, Vol 1: Those Left Behind";
Assert.IsTrue(bookListViewModel.Filter(bookDataModels[2]));
}