Rspec::Coverage

Inspired by Ryan Davis' RubyConf 2016 talk.

SimpleCov-backed coverage-tracking tools for RSpec. Coverage is only recorded in a describe block for the class being described, which prevents incidental coverage of unverified lines in collaborators and encourages better test design.

Add this line to your application's Gemfile:

gem 'rspec-coverage'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rspec-coverage

As early as possible in your code (before your classes load), add

require 'rspec/coverage'
# Takes the same optional args as SimpleCov.start
RSpec::Coverage.start

and use rspec as normal. Any describe block will automatically filter coverage to the class under test. You can also add a covers: annotation to control filtering.

RSpec.describe "User with collaborators", covers: [User, Collaborator] do
  ...
end

Bug reports and pull requests are welcome on GitHub at https://github.com/jamesdabbs/rspec-coverage. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

The gem is available as open source under the terms of the MIT License.