Ruby 搬运工必须与不在rspec工作的助手完全相同

我尝试在Carrierwave上传上运行rspec测试时遇到一些问题。基本上，我正在尝试测试处理，以确保是否上传和处理了图像。我创建了一个后处理的示例文件，该文件应该与上传和处理后的测试文件相同。然而，我得到以下警告：

---

---

image\u uploader.rb

require File.dirname(__FILE__) + '/../spec_helper'
require 'carrierwave/test/matchers'

describe ImageUploader do
  include CarrierWave::Test::Matchers
  include ActionDispatch::TestProcess

  before do
    ImageUploader.enable_processing = true
    @uploader_attr = fixture_file_upload('/test_images/testimage.jpg',    'image/jpeg')
    @uploader = ImageUploader.new(@uploader_attr)
    @uploader.store!
    @pregreyed_image =             fixture_file_upload('/test_images/testimage_GREY.jpg', 'image/jpeg')
  end

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

  context 'the greyscale version' do
    it "should remove color from the image and make it greyscale" do

      @uploader.should be_identical_to(@pregreyed_image)
    end
  end
  end

class ImageUploader < CarrierWave::Uploader::Base

  # Include RMagick or MiniMagick support:
  include CarrierWave::RMagick
  # include CarrierWave::MiniMagick

  # Include the Sprockets helpers for Rails 3.1+ asset pipeline compatibility:
  include Sprockets::Helpers::RailsHelper
  include Sprockets::Helpers::IsolatedHelper

  # Choose what kind of storage to use for this uploader:
  storage :file


  # Override the directory where uploaded files will be stored.
  # This is a sensible default for uploaders that are meant to be mounted:
  def store_dir
    "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.id}"
  end


  # Process files as they are uploaded:
   process :convert_to_grayscale

  def convert_to_grayscale
    manipulate! do |img|
      img.colorspace = Magick::GRAYColorspace
      img.quantize(256, Magick::GRAYColorspace)
      img = yield(img) if block_given?
      img
    end
  end

class ImageUploader

封面下方的

与

相同\u在两个参数上使用

FileUtils.idential？

。所以你的期望是：

@uploader.应该与（@pregreyed\u image）相同

他实际上是在打电话：

FileUtils.identical？（@uploader，@pregreyed\u image）

因为在我的测试环境中，我使用的是文件存储系统，所以我通过传入

#current_path

而不是像这样的上载程序本身来解决这个问题：

@uploader.current_path.should be_identical_to(@pregreyed_image)

实际上，我最终需要直接比较上传程序，并在我的上传程序上实现

=

：

classmyuploader

@uploader.current_path.should be_identical_to(@pregreyed_image)