Michael Hartl的Rails教程第3章，rspec出现错误

Question

I am newbie to Ruby on rails. currently using maverick's 10.9.3, Rails 4. I am getting the following error when I try to run the rspec command.

here is the error that i get:

rspec ./spec/controllers/pages_controller_spec.rb:35 # PagesController GET 'about' should have the right title
rspec ./spec/controllers/pages_controller_spec.rb:24 # PagesController GET 'contact' should have the right title
rspec ./spec/controllers/pages_controller_spec.rb:11 # PagesController GET 'home' should have the right title

my Gemfile includes:

group :development, :test do
  gem 'rspec-rails', '2.14.2'
end

group :test do
  gem 'rspec', '2.14.1'
  gem 'spork', '0.9.0.rc'
end

also my pages_controller_spec.rb

require 'spec_helper'

describe PagesController do
  render_views

  describe "GET 'home'" do
    it "returns http success" do
      get 'home'
      response.should be_success
    end
    it "should have the right title" do
      get 'home'
      response.should have_selector("title", :content => "Ruby on Rails Tutorial Sample App | Home")
    end
  end

  describe "GET 'contact'" do
    it "returns http success" do
      get 'contact'
      response.should be_success
    end


    it "should have the right title" do
      get 'contact'
      response.should have_selector("title", :content => "Ruby on Rails Tutorial Sample App | Contact")
    end
  end
  describe "GET 'about'" do
    it "returns http success" do
      get 'about'
      response.should be_success
    end

    it "should have the right title" do
      get 'about'
      response.should have_selector("title", :content => "Ruby on Rails Tutorial Sample App | About")
    end
  end
end

Controller code from the comment below:

class PagesController < ApplicationController
  def home
  end

  def contact
  end

  def about
  end
end

Answer 1

您是否尝试过检查文档： https : //relishapp.com/rspec

Answer 2

Is it as simple as a lower case "a" for about vs About?

Your test is looking for the string "Ruby on Rails Tutorial Sample App | About" and the code is producing "Ruby on Rails Tutorial Sample App | about". As far as I know, rspec is case sensitive.

The other thing I have seen is having to set :visible to false for testing titles.

Answer 3

You may also come across this mistake Ruby on Rail Michael Hartl's Chapter 3 Error . You may be having this error as caught by the built-in test suite of Rails (which at the time of this writing is 'rails-controller-testing' - '1.0.2', 'minitest' - '5.10.3', 'minitest-reporters' - '1.1.14')

I advise you follow Michael Hartl's Gemfiles when reading his book to learn Rails.

provide stores a block of markup in an identifier for later use. In this case, 'Help' in the symbol :title. The provide is enclosed in <% %> to indicate it is executing this code and not printing out in the view.

yield in this case just spits that block back out. The yield is enclosed in <%= %> to indicate it is being printed out into the view.

Think of it as setting a variable and printing out a variable.

See: http://api.rubyonrails.org/classes/ActionView/Helpers/CaptureHelper.html#method-i-provide for more information. Note that provide is really a wrapper for content_for so that's where the good stuff is in that link.

This is taken from this StackOverflow article: yield and provide() inside template