Ruby on Rails Error: undefined local variable or method

Question

我正在研究 Ruby Michael Hartl 的 Rails 教程。我正在进行我的用户名和电子邮件测试。

这是我的 user_test.rb:

require 'test_helper'

class UserTest < ActiveSupport::TestCase

  def setup
    @user = User.new(name: "Example User", email: "user@example.com")
  end

  test "should be valid" do
    assert @user.valid? # succeds if @user.valid? returns true else returns false
  end

  test "name should be present" do
    @user.name = ""   # returns true if a user name is not a blank string.
    assert_not @user.valid?
  end

  test "email should be present" do
    @user.email = ""   # returns true if a user email is not a blank string.
    assert_not @user.valid?
  end
end

这是我的 user.rb:

class User < ApplicationRecord
  validates :name, presence: true   # check name. Go to user_test.rb  line 15
  validates :email, presence: true  #    //              //           line 
end

这是我的 Static_pages_ControllerTest.test.rb:

require 'test_helper'

class StaticPagesControllerTest < ActionDispatch::IntegrationTest

  test "should get home" do
    get static_pages_home_url
    assert_response :success
    assert_select "title", "Ruby on Rails Tutorial Sample App"
  end

  test "should get help" do
    get static_pages_help_url
    assert_response :success
    assert_select "title", "Help | Ruby on Rails Tutorial Sample App"
  end

   test "should get about" do
     get static_pages_about_url
     assert_response :success
     assert_select "title", "About | Ruby on Rails Tutorial Sample App"
   end

end

我应该在运行 bundle exec rake test 时变绿。但是我在下面收到此错误：

Error:
StaticPagesControllerTest#test_should_get_home:
NameError: undefined local variable or method `static_pages_home_url' for #<StaticPagesControllerTest:0x007ff2ea5c3c28>
    test/controllers/static_pages_controller_test.rb:6:in `block in <class:StaticPagesControllerTest>'


bin/rails test test/controllers/static_pages_controller_test.rb:5

E

Error:
StaticPagesControllerTest#test_should_get_about:
NameError: undefined local variable or method `static_pages_about_url' for #<StaticPagesControllerTest:0x007ff2ec836af8>
    test/controllers/static_pages_controller_test.rb:18:in `block in <class:StaticPagesControllerTest>'


bin/rails test test/controllers/static_pages_controller_test.rb:17

E

Error:
StaticPagesControllerTest#test_should_get_help:
NameError: undefined local variable or method `static_pages_help_url' for #<StaticPagesControllerTest:0x007ff2e4a294f8>
    test/controllers/static_pages_controller_test.rb:12:in `block in <class:StaticPagesControllerTest>'


bin/rails test test/controllers/static_pages_controller_test.rb:11

这是我的 bundle exec rake routes :

$bundle exec rake routes
   Prefix Verb URI Pattern          Controller#Action
users_new GET  /users/new(.:format) users#new
     root GET  /                    static_pages#home
     help GET  /help(.:format)      static_pages#help
    about GET  /about(.:format)     static_pages#about
  contact GET  /contact(.:format)   static_pages#contact
   signup GET  /signup(.:format)    user#new

这是我的 github link:https://github.com/maxkim16/RailsError 请帮忙。

Answer 1

根据您在上次测试中遇到的最后一个错误，我建议您运行 bundle exec rake routes 并检查您是否像教程中那样正确定义了路由（您可以复制粘贴它在这里，所以我们可以检查是否一切正常）。

验证看起来不错。

您还可以判断此错误是随机发生的，一次还是每次？

重启 Ruby 是什么意思？

编辑。

检查 routes.rb 中的路由定义是否正确 get 'static_pages/help'。你可以试试改成get 'static_pages/help', as: 'static_pages_help'

Answer 2

@Vekka 我完全同意你的回答。此外，我通过更改测试在同一示例中尝试了不同的方式。下面我只显示了家庭

test "should get home" do
 get root_path
 assert_response :success
 assert_select "title", "Ruby on Rails Tutorial Sample App"
end

我选择 url 作为 root_path 因为在你问题的 rake bundle exec routes 中我可以看到 root 对于 'static_pages#home'。我们也可以把其他页面测试中的geturl改成help_path等等。

希望这个回答对您有所帮助，如果有帮助请打绿色勾。干杯！

Ruby on Rails Error: undefined local variable or method

Ruby on Rails Error: undefined local variable or method

ruby

ruby-on-rails-3