Monkeypatch paperclip for fast processing during specs

gistfile1.rb

module ImageHelpers
  def fixture_file(path)
    File.open(path)
  end 
end

module Paperclip
  class Geometry
    def self.from_file file
      parse("100x100")
    end
  end

  class FileCommandContentTypeDetector
    def detect
      'image/jpg'
    end
  end

  class MediaTypeSpoofDetector
    def spoofed?
      false
    end
  end

  class Thumbnail
    include ImageHelpers
    def make
      src = fixture_file('photo.jpg')
      dst = Tempfile.new([@basename, @format].compact.join("."))
      dst.binmode
      FileUtils.cp(src.path, dst.path)
      return dst
    end
  end
end