SimpleCov.start "rails" do
  changed_files = `git diff --name-only origin/master`.split("\n")
  add_group "Changed" do |source_file|
    changed_files.detect do |filename|
      source_file.filename.ends_with?(filename)
    end
  end
end

if ENV["CIRCLE_ARTIFACTS"]
  dir = File.join(ENV["CIRCLE_ARTIFACTS"], "coverage")
  SimpleCov.coverage_dir(dir)
end