文件上传 – Rails3,Cucumber,Capybara,文件上传=>内容正文(E

视图：

<%= form_tag "/upload/create",:multipart => true do %>
  <label for="file">File to Upload:</label>
  <%= file_field_tag "file" %>
  <%= submit_tag "Upload" %>
<% end %>

黄瓜步骤：

When /^I upload the basic file$/ do  
  visit path_to("upload")
  path = File.join(::Rails.root,"somefile") 
  attach_file("file",path)
  click_button("Upload")
end

在我的控制器中,除了：

def create
  file = params[:file]
end

Gemfile片段：

group :development,:test do
  # testing with specs
  gem "ZenTest",">= 4.3.3"
  gem "autotest"
  gem "rspec-rails",">= 2.0.0.beta.19",:git => "git://github.com/rspec/rspec-rails.git"
  gem "rspec",:git => "git://github.com/rspec/rspec.git"
  gem "rspec-core",:git => "git://github.com/rspec/rspec-core.git"
  gem "rspec-expectations",:git => "git://github.com/rspec/rspec-expectations.git"
  gem "rspec-mocks",:git => "git://github.com/rspec/rspec-mocks.git"
  # cucumber stuff
  gem 'capybara'
  gem 'database_cleaner'
  gem 'cucumber-rails'
  gem 'cucumber'
  gem 'spork'
  gem 'launchy'    # So you can do Then show me the page
  gem 'escape_utils' # needed to fix Cucumber - http://crimpycode.brennonbortz.com/?p=42
end

当我尝试运行测试时,我收到：

06004

我感谢任何帮助或见解.谢谢.