class Shoulda::Matchers::ActionController::RouteParams

def controller_and_action_given_as_string?
  args[0].is_a?(String)
end

def extract_params_from_string
  controller, action = args[0].split('#')
  params = (args[1] || {}).merge!(controller: controller, action: action)
  normalize_values(params)
end

def initialize(args)
  @args = args
end

def normalize
  if controller_and_action_given_as_string?
    extract_params_from_string
  else
    stringify_params
  end
end

def normalize_values(hash)
  hash.each_with_object({}) do |(key, value), hash_copy|
    hash_copy[key] = symbolize_or_stringify(key, value)
  end
end

def stringify(value)
  if value.is_a?(Array)
    value.map(&:to_param)
  else
    value.to_param
  end
end

def stringify_params
  normalize_values(args[0])
end

def symbolize_or_stringify(key, value)
  if PARAMS_TO_SYMBOLIZE.include?(key)
    value.to_sym
  else
    stringify(value)
  end
end