public void SutNotOrderIfSortingIsEmpty()
{
var context =
new TestAppContext(new Sorting<Book>[0]);
IBooksOrderer orderer = new BooksOrderer(context);
var books = GetBooks();
var result = orderer.Order(books);
Assert.IsFalse(result.Any());
}
public void SutNotOrderIfSortingIsNull()
{
var context =
new TestAppContext(null);
IBooksOrderer orderer = new BooksOrderer(context);
var books = GetBooks();
try
{
var result = orderer.Order(books);
Assert.Fail();
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(OrdenationException));
}
}
public void SutOrderByAuthorAscendingAndTitleDescending()
{
var context =
new TestAppContext(new[]
{
new Sorting<Book> {Column = c => c.AuthorName, Ascending = true},
new Sorting<Book> {Column = c => c.Title, Ascending = false}
});
IBooksOrderer orderer = new BooksOrderer(context);
var books = GetBooks();
var result = orderer.Order(books);
Assert.IsNotNull(result);
Assert.AreEqual("Java How to Program", result.ElementAt(0).Title);
Assert.AreEqual("Internet & World Wide Web: How to Program", result.ElementAt(1).Title);
Assert.AreEqual("Head First Design Patterns", result.ElementAt(2).Title);
Assert.AreEqual("Patterns of Enterprise Application Architecture", result.ElementAt(3).Title);
}