Rake task to crawl you rails app for broken links

crawl.rake

# Use this to look for broken links in your app.
# crawls the development server http://localhost:3000
# Suggestion: Also check to make sure that intentional 404s
#             are handled gracefully by app.

task :crawl => :environment do
  require 'anemone'
  root = 'http://localhost:3000'
  options = {:discard_page_bodies => true, :verbose => true}

  Anemone.crawl(root, options) do |anemone|      
    anemone.on_every_page do |page|      
      raise '404 Not Found!:' + page.url.path.to_s if page.not_found?
    end
    anemone.after_crawl do |pages|      
      raise 'Error! Only found 1 page. Is the server down?' if pages.size == 1
    end
  end
end