Book Image

Refactoring with Microsoft Visual Studio 2010

By : Peter Ritchie
Book Image

Refactoring with Microsoft Visual Studio 2010

By: Peter Ritchie

Overview of this book

<p>Changes to design are an everyday task for many people involved in a software project. Refactoring recognizes this reality and systematizes the distinct process of modifying design and structure without affecting the external behavior of the system. As you consider the benefits of refactoring, you will need this complete guide to steer you through the process of refactoring your code for optimum results.<br /><br />This book will show you how to make your code base more maintainable by detailing various refactorings. Visual Studio includes some basic refactorings that can be used independently or in conjunction to make complex refactorings easier and more approachable. This book will discuss large-scale code management, which typically calls for refactoring. To do this, we will use enterprise editions of Visual Studio, which incorporate features like Application Performance Explorer and Visual Studio Analyzer. These features make it simple to handle code and prove helpful for refactoring quickly.<br /><br />This book introduces you to improving a software system's design through refactoring. It begins with simple refactoring and works its way through complex refactoring. You will learn how to change the design of your software system and how to prioritize refactorings—including how to use various Visual Studio features to focus and prioritize design changes. The book also covers how to ensure quality in the light of seemingly drastic changes to a software system. You will also be able to apply standard established principles and patterns as part of the refactoring effort with the help of this book. You will be able to support your evolving code base by refactoring architectural behavior. As an end result, you will have an adaptable system with improved code readability, maintainability, and navigability.</p>
Table of Contents (17 chapters)
Refactoring with Microsoft Visual Studio 2010
Credits
About the Author
Acknowledgement
About the Reviewers
Preface
6
Improving Class Quality
9
Improving Architectural Behavior

Test driven development


As you start writing new code, you don't want to fall into the same trap as the legacy code you have to deal with. You want this new code to have tests in order to verify changes to it either as the next step in your refactoring or in some future refactoring. With Test-Driven Development ( TDD) you actually make sure you write the tests before you write the code. Let's have another look at our Model View Presenter (MVP) refactoring.

When separating out business logic code from the GUI (Graphical User Interface) we're now able to write tests to verify that business logic independent of the user interfaces tests that can be automated much easier. Before we refactored CreateInvoiceForm, we knew we needed the presenter to create an invoice based on information in the view as well as construct a presenter based on a specific view. In this case, we want two tests: one to test that the presenter is created correctly with the correct view reference, and one to verify that...