class ParallelTests::Test::Runner

def sum_up_results(results)
  results = results.join(' ').gsub(/s\b/, '') # combine and singularize results
  counts = results.scan(/(\d+) (\w+)/)
  counts.each_with_object(Hash.new(0)) do |(number, word), sum|
    sum[word] += number.to_i
  end
end