Ruby on rails 错误，失败/错误：预期{单击按钮提交}。不更改（用户，：计数）

我被困在迈克尔·哈特尔的RubyonRails教程的第7章

我的路线.rb

SampleApp::Application.routes.draw do
  get "users/new"
  resources :users
  root  'static_pages#home'
  match '/signup',  to: 'users#new',            via: 'get'
  match '/help',    to: 'static_pages#help',    via: 'get'
  match '/about',   to: 'static_pages#about',   via: 'get'
  match '/contact', to: 'static_pages#contact', via: 'get'
end

我的规格/请求/用户\u页面\u spec.rb

require 'spec_helper'

describe "User pages" do

  subject { page }

  describe "signup page" do
    before { visit signup_path }

    let(:submit) { "Create my account" }
    let(:submit) { "Sign up" }

    it { should have_content('Sign up') }
    it { should have_title(full_title('Sign up')) }
  end

  describe "profile page" do
    let(:user) { FactoryGirl.create(:user) }
    before { visit user_path(user) }

    it { should have_content(user.name) }
    it { should have_title(user.name) }
  end

  describe "with invalid information" do
    it "should not create a user" do
      expect { click_button submit }.not_to change(User, :count)
    end
  end

  describe "with valid information" do
    before do
      fill_in "Name",         with: "Example User"
      fill_in "Email",        with: "user@example.com"
      fill_in "Password",     with: "foobar"
      fill_in "Confirmation", with: "foobar"
    end

    it "should create a user" do
      expect { click_button submit }.to change(User, :count).by(1)
    end
  end
end

我的应用程序/views/users/new.html.erb

<% provide(:title, 'Sign up') %>
<h1>Sign up</h1>
<div class="row">
  <div class="span6 offset3">
    <%= form_for(@user) do |f| %>

      <%= render 'shared/error_messages' %>

      <%= f.label :name %>
      <%= f.text_field :name %>

      <%= f.label :email %>
      <%= f.text_field :email %>

      <%= f.label :password %>
      <%= f.password_field :password %>

      <%= f.label :password_confirmation, "Confirmation" %>
      <%= f.password_field :password_confirmation %>

      <%= f.submit "Create my account", class: "btn btn-large btn-primary" %>
    <% end %>
  </div>
</div>

当我尝试运行测试时，我得到以下结果：

gvyntyk@gvyntyk-r60:~/rails_projects/sample_app$ bundle exec rspec spec/
...............FF......................

Failures:

  1) User pages with invalid information should not create a user
     Failure/Error: expect { click_button submit }.not_to change(User, :count)
     NameError:
       undefined local variable or method `submit' for #<RSpec::Core::ExampleGroup::Nested_4::Nested_3:0xad40120>
     # ./spec/requests/user_pages_spec.rb:27:in `block (4 levels) in <top (required)>'
     # ./spec/requests/user_pages_spec.rb:27:in `block (3 levels) in <top (required)>'

  2) User pages with valid information should create a user
     Failure/Error: fill_in "Name",         with: "Example User"
     Capybara::ElementNotFound:
       Unable to find field "Name"
     # ./spec/requests/user_pages_spec.rb:33:in `block (3 levels) in <top (required)>'

Finished in 1.54 seconds
39 examples, 2 failures

Failed examples:

rspec ./spec/requests/user_pages_spec.rb:26 # User pages with invalid information should not create a user
rspec ./spec/requests/user_pages_spec.rb:39 # User pages with valid information should create a user

---

有人能解释一下这项测试失败的原因吗？

请确保你在这一章中的某一点上测试应该通过。有些测试在您更改代码后不应该通过。 另外，您的第二个错误似乎是身份验证问题。找不到字段名可能意味着在运行此测试时，用户应该已注册。我不太确定你发布的片段，但要确保你所有的缩进都是正确的，并且你的“末端”在正确的位置闭合。您现在拥有代码的方式看起来不像是在使用有效信息执行之前注册。尝试将描述注册页面do的结尾放在描述用户页面do块结尾之前的最底部。

从单击按钮文档：

按id、文本、值或标题查找按钮并单击它

因此，您可以为单击按钮方法提供按钮值。而不是：

expect { click_button submit }.not_to change(User, :count)

应该是：

expect { click_button 'Create my account' }.not_to change(User, :count)

您将收到以下错误：

Failure/Error: fill_in "Name",         with: "Example User"
Capybara::ElementNotFound:
  Unable to find field "Name"

因为您忘了在以下两种情况下访问注册路径：

及

---

块。

是否应该单击按钮：提交？对不起。。。什么意思？在expect{click_button:submit}上编辑expect{click_button:submit}？我的意思是您正在尝试执行未定义的提交方法，而您应该传递一个符号：submitSorry，但我不明白我错在哪里了。现在按钮提交创建我的帐户工作正常，但并没有通过测试。我认为它。。。在成功注册之前通过了测试。

describe "with invalid information" do

describe "with valid information" do