public void ShouldChangeBookName()
{
var book = new Book {
Id = 1, Name = "A"
};
var cmd = new ChangeBookCommand(book);
var newName = "xyz";
cmd.Do(newName);
Assert.Equal(newName, cmd.Book.Name);
}
public void ShouldRevertChange()
{
var originalName = "xyz";
var book = new Book {
Id = 1, Name = originalName
};
var cmd = new ChangeBookCommand(book);
var newName = "A";
cmd.Do(newName);
cmd.Undo();
Assert.Equal(originalName, cmd.Book.Name);
}