如何测试使用Cucumber接受嵌套属性的rails模型

Question

如何测试接受图像嵌套属性的模型主题？

Given /^I have topics titled (.+)$/ do |titles|
    path ="#{RAILS_ROOT}/features/upload-files/" 
    image = File.new(path + "image.jpg")
    titles.split(', ').each do |title|
        Topic.create!(:title => title, :image => File.new(image) ) # this doesn't work!
    end
end

Answer 1

Topic.create!(:title => title, :image_attributes => {:image => File.new(image) } ) # this works!