Rspec - 明显的测试失败，如何排除故障？

Question

我有一个非常简单的应用程序，我正在尝试使用 rspec 进行测试。我很难确定是我的配置有问题，还是代码有问题。 /people/index.html.erb 的第一行是<h1>Totally Awesome Page</h1>。

错误：

expected to find text "Totally Awesome Page" in "Index"
./spec/features/people_spec.rb:19:in `block (3 levels) in <class:PeopleSpec>'

测试宝石：

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

spec/features/people_spec.rb：

require 'spec_helper'

class PeopleSpec < ActionDispatch::IntegrationTest

  describe "People" do

    describe "Index" do

     before { visit '/people'}

      it { should have_content('Totally Awesome Page')}

    end
  end
end

spec/spec_helper：

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'
require 'minitest/autorun'
require 'capybara/rails'
require 'capybara/rspec'

Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

ActiveRecord::Migration.maintain_test_schema!

RSpec.configure do |config|

  config.use_transactional_fixtures = true

  config.infer_base_class_for_anonymous_controllers = false

  config.order = "random"
  config.include Capybara::DSL
end

路线：

people_path     GET     /people(.:format)   people#index
              POST  /people(.:format)   people#create
new_person_path     GET     /people/new(.:format)   people#new
edit_person_pathGET     /people/:id/edit(.:format)  people#edit
person_path     GET     /people/:id(.:format)   people#show
              PATCH     /people/:id(.:format)   people#update
              PUT   /people/:id(.:format)   people#update
              DELETE    /people/:id(.:format)   people#destroy 

Answer 1

添加gem 'launchy'，然后您可以在visit 之后使用save_and_open_page 来查看渲染页面的样子。

将subject { page } 添加到规范中以修复它。

如果您说it，则它必须指向某些东西。在你的测试中它没有。 你可以在page 上使用should 来做到这一点（page 不是你可以测试的唯一一个。还有更多，比如response 甚至 lambdas）这样：

it "some description" do
  page.should have_content('foo')
end

或者，如果您对page 有很多测试，那么您可以用简短的方式编写它们：

it { should have_content('foo') }

但您需要先为it 指定主题：

subject { page }