def coverage_path
      @coverage_path ||= begin
        coverage_path = File.expand_path(coverage_dir, root)
        FileUtils.mkdir_p coverage_path
        coverage_path
      end
    end
def coverage_path
      @coverage_path ||= begin
        coverage_path = File.expand_path(coverage_dir, root)
        FileUtils.mkdir_p coverage_path
        coverage_path
      end
    end
Returns the full path to the output directory using SimpleCov.root
 and SimpleCov.coverage_dir, so you can adjust this by configuring those
 values. Will create the directory if it's missing