This book will teach you how to use RSpec to write high-value
tests for real-world code. We start with the key concepts of
the unit and testability, followed by hands-on exploration of
key features. From the beginning, we learn how to integrate
tests into the overall development process to help create
high-quality code, avoiding the dangers of testing for its
own sake.
We build up sample applications and their corresponding
tests step by step, from simple beginnings to more
sophisticated versions that include databases and external
web services. We devote three chapters to web applications
with rich JavaScript user interfaces, building one from the
ground up using behavior-driven development (BDD) and
test-driven development (TDD).
The code examples are detailed enough to be realistic while
simple enough to be easily understood. Testing concepts,
development methodologies, and engineering tradeoffs are
discussed in detail as they arise. This approach is designed
to foster the reader’s ability to make well-informed decisions
on their own.