auto mock_xxxx hack

auto_define_mock_method

#
# write it in the bottom of spec/spec_helper.rb
#
def method_missing(name, *args)
  if matched = name.to_s.match(/mock_(.*)/)
    klass = matched[1].classify.constantize
    var_name = "@#{name.to_s}"
    self.class.send(:define_method, name) do |*stubs|
      stubs =  stubs.try(:first) || {}
      instance_variable_get(var_name) ||
        instance_variable_set(var_name, mock_model(klass, stubs))
    end
    send(name, args.first)
  else
    super
  end
end