Capybara无法找到档案

Question

运行RSpec时出现此错误：

Failures:    

1) Creating a new movie saves the movie and shows the new movie's details
 Failure/Error: attach_file "Poster image", with: "#{Rails.root}/app/assets/images/interstellar.jpg"

 Capybara::FileNotFound:
   cannot attach file, [:with, "/Users/Ian/code/courses/ruby_on_rails_1/flix-tdd/app/assets/images/interstellar.jpg"]does not exist

但是，我检查一下，看起来文件就在那里：

File.exist?("#{Rails.root}/app/assets/images/interstellar.jpg")
 => true

File.exist?("/Users/Ian/code/courses/ruby_on_rails_1/flix-tdd/app/assets/images/interstellar.jpg")
 => true

我在这里缺少什么？

Answer 1

为什么不呢？

attach_file "Poster image", "#{Rails.root}/app/assets/images/interstellar.jpg"

http://www.rubydoc.info/github/jnicklas/capybara/Capybara/Node/Actions#attach_file-instance_method