如何规范CarrierWave MiniMagick操作

Question

在我的CarrierWave上传工具上为我的"auto_orient“实现编写RSpec测试时遇到了麻烦。我也没有在网上找到太多关于这件事的爱。

我知道操纵方法将由gem指定，但我只想用RSpec验证我的ImageUploader是否正确地实现了它。

    class ImageUploader < CarrierWave::Uploader::Base
      include CarrierWave::MiniMagick

      ...

      version :tile do
        process :auto_orient
      end

      # Fix images being uploaded the wrong orientation
      def auto_orient
        manipulate! do |img|
          img = img.auto_orient
        end
      end



    let(:uploader) { ImageUploader.new(profile, :avatar) }

    before do
      ImageUploader.enable_processing = true
      File.open(File.join(Rails.root, '/spec/support/images/logo.png')) { |f| uploader.store!(f) }
    end

    after do
      ImageUploader.enable_processing = false
      uploader.remove!
    end

    xit 'runs auto_orient on the image' do
      # ???
    end

谢谢

Answer 1

我不是100%确定如何在MiniMagick中做到这一点，但这里是我如何使用RMagick解决这个问题的，如果这有帮助的话。我想应该是一种类似的方法。

uploader.cache_stored_file!
# For minimagick, you would probably use MiniMagick::Image::read
mg = ::Magick::Image::read(uploader.file.file).first
# Not sure if minimagick has an "orient" attribute, might try reading the data using something from here instead: https://github.com/probablycorey/mini_magick/blob/master/lib/mini_magick.rb#L204
expect(mg.orientation.to_i).to eq(1)