module Coveralls

def start!(simplecov_setting = 'test_frameworks', &block)
  if @@adapter == :simplecov
    ::SimpleCov.add_filter 'vendor'
    if simplecov_setting
      Coveralls::Output.puts("[Coveralls] Using SimpleCov's '#{simplecov_setting}' settings.", :color => "green")
      if block_given?
        ::SimpleCov.start(simplecov_setting) { instance_eval(&block)}
      else
        ::SimpleCov.start(simplecov_setting)
      end
    elsif block
      Coveralls::Output.puts("[Coveralls] Using SimpleCov settings defined in block.", :color => "green")
      ::SimpleCov.start { instance_eval(&block) }
    else
      Coveralls::Output.puts("[Coveralls] Using SimpleCov's default settings.", :color => "green")
      ::SimpleCov.start
    end
  end
end