0.rb

require 'spec_helper'

describe 'The homepage', :vcr do
  before do
    visit '/'
  end

  it 'displays recent posts from Hacker News' do
    hacker_news_links = all '#hn .post a'
    hacker_news_links.should_not be_empty
    hacker_news_links.each do |link|
      link[:href].should match(%r{http://news\.ycombinator\.com})
    end
  end
end

1.txt

$ rspec spec/requests/homepage_spec.rb                                                                                                                                  
F

Failures:

  1) The homepage displays recent posts from Hacker News
     Failure/Error: visit '/'
     ActionController::RoutingError:
       No route matches [GET] "/"
     # ./spec/requests/homepage_spec.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.05392 seconds
1 example, 1 failure

2.rb

Sample::Application.routes.draw do
  root to: 'posts#index'
end

3.html.haml

#hn
  - @recent_posts.each do |post|
    .post
      = link_to post.title, post.url

4.rb

class PostsController < ApplicationController
  def index
    @recent_posts = Post.recent
  end
end

5.txt

$ rspec spec/requests/homepage_spec.rb                                                                                                                                  F

Failures:

  1) The homepage displays recent posts from Hacker News
     Failure/Error: visit '/'
     NameError:
       uninitialized constant PostsController::Post
     # ./app/controllers/posts_controller.rb:3:in `index'
     # ./spec/requests/homepage_spec.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.07371 seconds
1 example, 1 failure

6.rb

require 'spec_helper'

describe Post do
  describe '.recent' do
    before do
      posts = [
        { title: 'Post #1', url: 'http://example.com/1' },
        { title: 'Post #2', url: 'http://example.com/2' },
        { title: 'Post #3', url: 'http://example.com/3' }
      ]
      HN::Post
        .should_receive(:recent)
        .and_return(posts)

      @recent_posts = Post.recent
    end

    it 'returns recent posts' do
      @recent_posts.should have(3).posts
    end

    it 'sets their title' do
      @recent_posts.each do |post|
        post.title.should be
      end
    end

    it 'sets their url' do
      @recent_posts.each do |post|
        post.url.should be
      end
    end
  end
end

7.rb

module HN
  class Post
  end
end

8.rb

class Post
  def self.recent
    posts = HN::Post.recent
    posts.collect do |post|
      new post
    end
  end

  attr_accessor :title,
    :url

  def initialize(attributes)
    self.title = attributes[:title]
    self.url = attributes[:url]
  end
end

9.txt

In order to find interesting links for the intellectually curious
As a user
I want to see the latest Hacker News posts on the homepage