使用水豚/ Rspec的will_paginate gem是测试的意见(Testing views

这样做迈克尔·哈特尔的Rails的教程，在第10章，第5节，锻炼2 。我 - 很干脆 - 试图写的测试，以确保出现在使用will_paginate gem是几页分页格（这似乎是哈特尔的首选测试是否分页作品的方法），但是当我添加以下代码..

subject { page }
.
.
.
it { should have_selector('div.pagination') }

..它的回报..

  1) UserPages profile page 
     Failure/Error: it { should have_selector('div.pagination') }
       expected css "div.pagination" to return something

这是特别奇怪，因为在这个特定的_spec文件，这同样Rspec的代码正在通过测试，并在别人失败（我还是要强调低于此）。同样， pagination格存在于我的浏览器的源代码，当然，它的正常工作。

因为在一些地方，而不是其他人失败了，我得假设这是莫名其妙地“范围” -或分配型问题相关will_paginate -你看，对于失败的测试，而分页内容实际上是一部分“微柱”的控制器，但网页/视图被测试由被处理‘用户’控制器。对于通过的测试，视图和控制器都为“用户”。

莫非是这个问题？这也有可能是我的FactoryGirl设置/调用被打破，而不是触发测试分页代码的某些原因。我是一个Rails的n00b - 实际上完全新的节目 - 所以感谢你们大家。 :)

（也，PS，我怎么做我的代码丰富多彩，漂亮的SO？）

/spec/requests/user_pages_spec.rb

require 'spec_helper' # Omitted from below - I don't think this is relevant.

describe "UserPages" do

  subject { page }

  describe "index" do # This is the block where it is PASSING..

    let(:user) { FactoryGirl.create(:user) } # I'll include my /spec/factories.rb file below

    before(:all)  { 30.times { FactoryGirl.create(:user) } }
    after(:all)   { User.delete_all } # I'll omit my /app/models/user.rb file - I don't think it's relevant to the problem

    before do
      valid_signin user # References /spec/support/utilities.rb to sign in as a valid user, but I will omit this since this is part of the working tests
      visit users_path # This is /app/views/users/index.html.erb - this is where SUCCESSFUL pagination testing occurs
    end

    describe "pagination" do

      it { should have_selector('div.pagination') } #PASS!! As I would expect
  .
  .
  .
  end

  describe "profile page" do
    let(:user) { FactoryGirl.create(:user) }
    let!(:m1) { FactoryGirl.create(:micropost, user: user, content: "Awesome")} # Used for other tests
    let!(:m2) { FactoryGirl.create(:micropost, user: user, content: "Sauce") } # Used for other tests

    before(:all)  { 30.times { FactoryGirl.create(:micropost) } } # Is this constructed properly? Perhaps the posts are not created, and that's why the failure to render the paginate code in test.
    after(:all)   { user.microposts.delete_all } # I have tested with and without this line of code - it fails both ways.

    before { visit user_path(user) } # /app/views/users/show.html.erb

    it { should have_selector('div.pagination') } # FAIL!!! This is the line in question that generates the error above.
    .
   .
  .
 .
end

/app/views/users/index.html.erb（分页工作现场，测试还在努力）

<%= provide(:title, 'All users') %>
<h1>All users</h1>

<%= will_paginate %>

<ul class="users">
  <%= render @users %>
</ul>

<%= will_paginate %>

/app/views/users/show.html.erb（分页工作现场，测试失败）

<% provide(:title, @user.name) %>
<div class="row">
.
.
.
  <div class="span8">
    <% if @user.microposts.any? %>
      <h3>Microposts (<%= @user.microposts.count %>)</h3>
      <ol class="microposts">
        <%= render @microposts %>
      </ol>
      <%= will_paginate @microposts %> # Here is where I declare that pagination should occur on @microposts, NOT @users
    <% end %>
  </div>
</div>

/spec/requests/factories.rb

FactoryGirl.define do
  factory :user do
    sequence(:name)   { |n| "Person #{n}" }
    sequence(:email)  { |n| "person_#{n}@example.com" }
    password  "secret"
    password_confirmation "secret"

    factory :admin do
      admin true
    end
  end

  factory :micropost do
    content "Lorem ipsum"
    user
  end
end

/的Gemfile

source 'https://rubygems.org'

gem 'rails', '3.2.3'
gem 'pg', '0.12.2'
gem 'bootstrap-sass', '2.0.0'
gem 'bcrypt-ruby', '3.0.1'
gem 'faker', '1.0.1'
gem 'will_paginate', '3.0.3'
gem 'bootstrap-will_paginate', '0.0.6'

group :development do
    gem 'guard-rspec', '0.5.5'
    gem 'annotate', '~> 2.4.1.beta'
end

# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '3.2.4'
  gem 'coffee-rails', '3.2.2'
  gem 'uglifier', '1.2.3'
end

gem 'jquery-rails', '2.0.0'

group :test, :development do
  gem 'rspec-rails', '2.9.0'
end

group :test do
    gem 'capybara', '1.1.2'
    gem 'rb-fsevent', '0.4.3.1', :require => false
    gem 'growl', '1.0.3'
    gem 'guard-spork', '0.3.2'
    gem 'spork', '0.9.0'
    gem 'factory_girl_rails', '1.4.0'
end

编辑：发现了这篇文章，will_paginate和查看相关的测试，但不明白它老老实实（可能是由于语法）..难道是某种联系？

Answer 1:

当您使用：

before(:all)  { 30.times { FactoryGirl.create(:user) } }

所以总数上升到31，所以它分页（分页与will_paginate显示，每页30笔默认）您已经创建一个用户。

尝试创建31个微观柱，而不是30，应该能顺利通过。

before(:each) { 31.times { FactoryGirl.create(:micropost, user: user) } }

编辑：我忘了传了：用户在工厂微柱，它应该现在的工作（是我有我的测试代码，并将其传递）

Answer 2:

据http://thewebfellas.com/blog/2008/8/3/roll-your-own-pagination-links-with-will_paginate

"<%= will_paginate %> ”产生一个div标签class = pagination ，但我没有看到任何将意味着使测试'div.pagination'通过。

我改变了测试

it { should have_selector('div', class: 'pagination') }

这应该基本测试相同的东西，这通行证我。希望这可以帮助！

Answer 3:

<%= provide (:title, 'All users') %>
<h1>All users</h1>

<div class="pagination">
<%=will_paginate%>
</div>

<ul class="users">
<%=render @users%>
</ul> 

<div class="pagination">
<%= will_paginate %>
</div>