class Module

def infect_with_assertions(pos_prefix, neg_prefix,
                           skip_re,
                           dont_flip_re = /\c0/,
                           map = {})
  MiniTest::Assertions.public_instance_methods(false).sort.each do |meth|
    meth = meth.to_s
    new_name = case meth
               when /^assert/ then
                 meth.sub(/^assert/, pos_prefix.to_s)
               when /^refute/ then
                 meth.sub(/^refute/, neg_prefix.to_s)
               end
    next unless new_name
    next if new_name =~ skip_re
    regexp, replacement = map.find { |re, _| new_name =~ re }
    new_name.sub! regexp, replacement if replacement
    puts "\n##\n# :method: #{new_name}\n# See MiniTest::Assertions##{meth}" if
      $0 == __FILE__
    infect_an_assertion meth, new_name, new_name =~ dont_flip_re
  end
end