小编Gab*_*nor的帖子

我有一个方法,比较两个文本文件是否具有相同的内容.

如何使用rspec比较两个文本文件是否具有相同的内容？

我正在尝试测试一些与RSpec的关联,但我得到了这些失败:

Category 
   Failure/Error: it {should belong_to :post}
   Expected Category to have a belongs_to association called post (Category does not have  a post_id foreign key.)
 # ./spec/models/category_spec.rb:7:in `block (2 levels) in <top (required)>'

Post 
 Failure/Error: it {should have_one (:category)}
   Expected Post to have a has_one association called category (Category does not have a post_id foreign key.)
 # ./spec/models/post_spec.rb:8:in `block (2 levels) in <top (required)>'

这是我的模特:

class Post < ActiveRecord::Base
  has_one :category
  validates_presence_of :author, :category, :post
end

class Category < ActiveRecord::Base
  belongs_to …