ruby-on-rails-3 - 未找到 Rails 测试 - 未定义的局部变量或方法 "response"

Question

我正在尝试关注 Michael Hartl 的 Rails 3 tutorial我遇到了一个错误，我在其他地方找不到解释。在 Section 9.2.1 下，我在尝试为尝试更新个人资料页面的未登录用户运行测试时遇到错误。

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

我得到的错误是“未定义局部变量或方法‘响应’# (NameError)”。这是对“bundle exec rspec spec/”的回应。当我注释掉有问题的行时，所有测试都会实例化并通过。我试过用“response.body”和“page”之类的东西替换“response”，但似乎都无济于事。

我不确定问题出在哪里，因为在我继续学习本教程时，类似的 block 正在顺利通过。

这是完整的错误文本:

C:\Ruby193\bin\ruby.exe -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) C:\Ruby193\bin\rake spec
Testing started at 7:39 PM ...
C:/Ruby193/bin/ruby.exe -S rspec ./spec/models/user_spec.rb ./spec/requests/authentication_pages_spec.rb ./spec/requests/static_pages_spec.rb ./spec/requests/user_pages_spec.rb
Rack::File headers parameter replaces cache_control after Rack 1.5.
C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:60:in `block (5 levels) in <top (required)>': undefined local variable or method `response' for #<Class:0x4894908> (NameError)
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `module_eval'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `subclass'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:230:in `describe'
    from C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:58:in `block (4 levels) in <top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `module_eval'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `subclass'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:230:in `describe'
    from C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:51:in `block (3 levels) in <top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `module_eval'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `subclass'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:230:in `describe'
    from C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:48:in `block (2 levels) in <top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `module_eval'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `subclass'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:230:in `describe'
    from C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:46:in `block in <top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `module_eval'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:244:in `subclass'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/example_group.rb:230:in `describe'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/dsl.rb:18:in `describe'
    from C:/Users/Jeff/Documents/rails_projects/sample_app/spec/requests/authentication_pages_spec.rb:3:in `<top (required)>'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `block in load'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:236:in `load_dependency'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.11/lib/active_support/dependencies.rb:245:in `load'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `block in load_spec_files'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `each'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/configuration.rb:789:in `load_spec_files'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/command_line.rb:22:in `run'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:80:in `run'
    from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rspec-core-2.12.2/lib/rspec/core/runner.rb:17:in `block in autorun'
rake aborted!
C:/Ruby193/bin/ruby.exe -S rspec ./spec/models/user_spec.rb ./spec/requests/authentication_pages_spec.rb ./spec/requests/static_pages_spec.rb ./spec/requests/user_pages_spec.rb failed
-e:1:in `load'
-e:1:in `<main>'
Tasks: TOP => spec
(See full trace by running task with --trace)

Process finished with exit code 1
Empty test suite.

我很确定这不是某个地方的拼写错误，但这是有问题的文件 (authentication_pages_spec.rb)。 (have_title() 是我在这里找到的一种修复错误的方法，因为 have_selector('title',...) 显然不再是有效语法。)

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_title('Sign in') }
  end

  describe "signin" do
    before { visit signin_path }

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

      it { should have_title('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_title(user.name) }
      it { should have_link('Profile', href: user_path(user)) }
      it { should have_link('Settings', href: edit_user_path(user)) }
      it { should have_link('Sign out', href: signout_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 "in the Users controller" do

        describe "visiting the edit page" do
          before { visit edit_user_path(user) }
          it { should have_title('Sign in') }
        end

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

Answer 1

您运行的是哪个版本的 Capybara？

$ bundle exec gem list | grep capybara

如果您正在运行 >= 2.0 版本，您应该再次查看您的 Gemfile 并将版本特别标记为与教程相同 (1.1.2) .

gem 文件

group :test do
  gem 'capybara', '1.1.2'
end

如果您拼命想要使用最新版本，则必须进行一些更改，如以下 StackOverflow 问答中所述:

• Capybara methods are undefined
• capybara: post, get methods not working when changing name of requests directory to features
• RSpec & Capybara 2.0 tripping up my have_selector tests

更新

好吧，你要自责了，但是在克隆你的 repo 并得到同样的错误之后，你的问题很明显(语法高亮是你的 friend ):

关于 Line 77 of your spec/requests/authentication_pages_spec.rb你有:

specify ( response.should redirect_to(signin_path) )

应该是:

specify { response.should redirect_to(signin_path) }

修复该问题后，您的测试将通过。