Using CodeClimate's coverage reporting alongside an existing formatter.

gistfile1.rb

require "codeclimate-test-reporter"
CodeClimate::TestReporter.start

# output Rcov-style coverage files
require 'simplecov'
require 'simplecov-rcov'

class SimpleCov::Formatter::MergedFormatter
  def format(result)
      require "codeclimate-test-reporter"
     CodeClimate::TestReporter::Formatter.new.format(result)
     SimpleCov::Formatter::RcovFormatter.new.format(result)
  end
end

SimpleCov.formatter = if ENV['CODECLIMATE_REPO_TOKEN']
  SimpleCov::Formatter::MergedFormatter
else
  SimpleCov.formatter = SimpleCov::Formatter::RcovFormatter
end