module RSpec::Support::Spec

def self.start_simplecov(&block)
  SimpleCov.start do
    add_filter "bundle/"
    add_filter "tmp/"
    add_filter do |source_file|
      # Filter out `spec` directory except when it is under `lib`
      # (as is the case in rspec-support)
      source_file.filename.include?('/spec/') && !source_file.filename.include?('/lib/')
    end
    instance_eval(&block) if block
  end
end