Book Image

RSpec Essentials

By : Mani Tadayon
Book Image

RSpec Essentials

By: Mani Tadayon

Overview of this book

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.
Table of Contents (17 chapters)
RSpec Essentials
About the Author
About the Reviewers

Integrating Capybara with RSpec

Let's turn our irb session into an RSpec spec to finish our initial tour of Capybara. We'll put the contents into a file called smithsonian_spec.rb that looks like this:

require 'capybara/rspec'

Capybara.current_driver = :selenium  

# switch to chrome based on environment variable. e.g.:
#   $ BROWSER=chrome rspec smithsonian_spec.rb
if ENV['BROWSER'] == 'chrome'
  Capybara.register_driver :selenium do |app|, browser: :chrome)

# use poltergeist headless driver/browser based on environment variable, e.g.
#   $ BROWSER=poltergeist rspec smithsonian_spec.rb
elseif ENV['BROWSER'] == 'poltergeist'
  puts "Using poltergeist headless driver..."
  require 'capybara/poltergeist'
  Capybara.register_driver :poltergeist do |app|, {timeout: 60})
  Capybara.current_driver = :poltergeist  

describe "", type: :feature do  
  it "has a search feature" do...