class Module

def infect_an_assertion meth, new_name, dont_flip = false # :nodoc:
  # warn "%-22p -> %p %p" % [meth, new_name, dont_flip]
  self.class_eval <<-EOM
    def #{new_name} *args
      return MiniTest::Spec.current.#{meth}(*args, &self) if
        Proc === self
      return MiniTest::Spec.current.#{meth}(args.first, self) if
        args.size == 1 unless #{!!dont_flip}
      return MiniTest::Spec.current.#{meth}(self, *args)
    end
  EOM
end