public void Edit_GivenBookIdAndNewTitle_ChangesBookId()
{
// Arrange
var bookLibrary = new BookLibrary();
var expectedBookTitle = "War and Peace";
bookLibrary.Add("A Tale of Two Cities");
bookLibrary.Add("Fellowship of the Ring");
bookLibrary.Add("Pride and Prejudice and Zombies");
// Act
bookLibrary.Edit(1, expectedBookTitle);
// Assert
var actual = bookLibrary.Get(1);
actual.Title.Should().Be(expectedBookTitle);
}