class Shoulda::Matchers::ActionController::RouteMatcher

def description
  "route #{@method.to_s.upcase} #{@path} to/from #{@params.inspect}"
end

def guess_controller!(controller)
  @params[:controller] ||= controller.controller_path
end

def in_context(context)
  @context = context
  self
end

def initialize(method, path, context)
  @method  = method
  @path    = path
  @context = context
end

def matches?(controller)
  guess_controller!(controller)
  route_recognized?
end

def route_recognized?
  begin
    @context.__send__(:assert_routing,
                  { method: @method, path: @path },
                  @params)
    @failure_message_when_negated = "Didn't expect to #{description}"
    true
  rescue ::ActionController::RoutingError => error
    @failure_message = error.message
    false
  rescue Shoulda::Matchers.assertion_exception_class => error
    @failure_message = error.message
    false
  end
end

def to(*args)
  @params = RouteParams.new(args).normalize
  self
end