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Fundamentals of Testing Using Rails

Installing RSpec

Explore the process of installing RSpec in a Rails project by adding the gem, running bundle install, and generating necessary configuration files. Understand the use of specs and how RSpec integrates with Rails testing workflows to support a behavior-driven development approach.

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RSpec Gemfile

Before we start testing, we’ll need to load RSpec, our testing library.

To add RSpec to a Rails project, we’ll add the rspec-rails gem to the Gemfile:

Ruby
group :development, :test do
  gem "rspec-rails"
end

The rspec-rails gem dependencies

The Rspec gem is mostly a list of other dependencies where the real work gets done, including:

  • The RSpec-core dependency
  • The rspec-expectations dependency
  • The rspec-mocks dependency

Sometimes rspec and rspec-rails are updated separately. We might choose to specify both versions in the Gemfile explicitly. Here, we’re putting rspec ...