Michael Hartl的Ruby on Rails教程。 第9章中的测试失败

Question

我是Michael Hartl的Tuby on Rails Tutorial的新手，我在第9章的测试中有几个失败的项目。

运行RSPEC测试返回：

sis-macbook-pro:sample_app Lagaspi$ bundle exec rspec spec/
...................................FF................................

Failures:

1) Authentication authorization in the Users controller visiting the edit page 
 Failure/Error: before { visit edit_user_path(user) }
 NameError:
   undefined local variable or method `user' for #<RSpec::Core::ExampleGroup::Nested_2::Nested_3::Nested_2::Nested_1:0x007fca6433d3b8>
 # ./spec/requests/authentication_pages_spec.rb:72:in `block (5 levels) in <top (required)>'

2) Authentication authorization in the Users controller submitting to the update action 
 Failure/Error: before { put user_path(user) }
 NameError:
   undefined local variable or method `user' for #<RSpec::Core::ExampleGroup::Nested_2::Nested_3::Nested_2::Nested_2:0x007fca6434db50>
 # ./spec/requests/authentication_pages_spec.rb:77:in `block (5 levels) in <top (required)>'

Finished in 1.85 seconds
69 examples, 2 failures

Failed examples:

rspec ./spec/requests/authentication_pages_spec.rb:73 # Authentication authorization in the Users controller visiting the edit page 
rspec ./spec/requests/authentication_pages_spec.rb:78 # Authentication authorization in the Users controller submitting to the update action 

我的authentication_pages_spec.rb

require 'spec_helper'

describe "Authentication" do

subject { page }

describe "signin page" do
before { visit signin_path }

it { should have_selector('h1',    text: 'Sign in') }
it { should have_selector('title', text: 'Sign in') }
end

describe "signin" do
before { visit signin_path }

describe "with invalid information" do
  before { click_button "Sign in" }

  it { should have_selector('title', text: 'Sign in') }
  it { should have_selector('div.alert.alert-error', text: 'Invalid') }

  describe "after visiting another page" do
    before { click_link "Home" }
    it { should_not have_selector('div.alert.alert-error') }
  end
 end

 describe "with valid information" do
  let(:user) { FactoryGirl.create(:user) }
  before { sign_in user }

  it { should have_selector('title', text: user.name) }
  it { should have_link('Profile',     href: user_path(user)) }
  it { should have_link('Sign out',    href: signout_path) }
  it { should have_link('Settings',    href: edit_user_path(user)) }
  it { should have_link('Users',       href: users_path) }
  it { should_not have_link('Sign in', href: signin_path) }

  describe "followed by signout" do
    before { click_link "Sign out" }
    it { should have_link('Sign in') }
  end
 end
end

describe "authorization" do

describe "for non-signed-in users" do
  let(:user) { FactoryGirl.create(:user) }

  describe "when attempting to visit a protected page" do
    before do
      visit edit_user_path(user)
      fill_in "Email",    with: user.email
      fill_in "Password", with: user.password
      click_button "Sign in"
    end

    describe "after signing in" do

      it "should render the desired protected page" do
        page.should have_selector('title', text: 'Edit user')
      end
    end
  end
  end

   describe "in the Users controller" do

    describe "visiting the edit page" do
      before { visit edit_user_path(user) }
      it { should have_selector('title', text: 'Sign in') }
    end

    describe "submitting to the update action" do
      before { put user_path(user) }
      specify { response.should redirect_to(signin_path) }
    end
  end
  end

  describe "as wrong user" do
  let(:user) { FactoryGirl.create(:user) }
  let(:wrong_user) { FactoryGirl.create(:user, email: "wrong@example.com") }
  before { sign_in user }

  describe "visiting Users#edit page" do
    before { visit edit_user_path(wrong_user) }
    it { should_not have_selector('title', text: full_title('Edit user')) }
  end

  describe "submitting a PUT request to the Users#update action" do
    before { put user_path(wrong_user) }
    specify { response.should redirect_to(root_path) }
  end
  end
end

这是上面的第73行

it { should have_selector('title', text: 'Sign in') }

从上面的第78行

specify { response.should redirect_to(signin_path) }

有任何想法吗？ 我真的不知道这意味着什么。谢谢Si。

Answer 1

在第50行你有

let(:user) { FactoryGirl.create(:user) }

但是：当您到达第73行时，用户不再可用，因为您关闭了描述块：用户在第68行中定义。第77行也是如此，您尝试再次使用它。

我的建议是将let（：user）移动到规范的顶部，这样您只需要定义一次，而不是在整个规范中包含它。 如果失败了，请在第71行再次定义它（ 描述“在用户控制器中”之后的行 ）

---

潜在的解决方案是在顶部定义let（：user）.....所以你只需要定义一次用户而不是每个块

require 'spec_helper'

describe "authentication" do
  subject { page }
  let(:user) { FactoryGirl.create(:user) }
  ...