Foreword by Kent Beck
"The authors of this book have led a revolution in the craft of
programming by controlling the environment in which software grows."
--Ward Cunningham
"At last, a book suffused with code that exposes the deep symbiosis
between TDD and OOD. This one's a keeper." --Robert C. Martin
*"If you want to be an expert in the state of the art in TDD, you need
to understand the ideas in this book."--*Michael Feathers
Test-Driven Development (TDD) is now an established technique for
delivering better software faster. TDD is based on a simple idea: Write
tests for your code before you write the code itself. However, this
"simple" idea takes skill and judgment to do well. Now there's a
practical guide to TDD that takes you beyond the basic concepts. Drawing
on a decade of experience building real-world systems, two TDD pioneers
show how to let tests guide your development and "grow" software that is
coherent, reliable, and maintainable.
Steve Freeman and Nat Pryce describe the processes they use, the design
principles they strive to achieve, and some of the tools that help them
get the job done. Through an extended worked example, you'll learn how
TDD works at multiple levels, using tests to drive the features and the
object-oriented structure of the code, and using Mock Objects to
discover and then describe relationships between objects. Along the way,
the book systematically addresses challenges that development teams
encounter with TDD--from integrating TDD into your processes to testing
your most difficult features. Coverage includes
- Implementing TDD effectively: getting started, and maintaining your
momentum
throughout the project
- Creating cleaner, more expressive, more sustainable code
- Using tests to stay relentlessly focused on sustaining quality
- Understanding how TDD, Mock Objects, and Object-Oriented Design come
together
in the context of a real software development project
- Using Mock Objects to guide object-oriented designs
- Succeeding where TDD is difficult: managing complex test data, and
testing persistence
and concurrency
