Michael Hartl 的教程第 8 章

Question

我正在编写 MH 的教程，但我不断收到这三个错误。这是说“提交”是一个未定义的变量，我不明白为什么。不确定是什么问题。任何建议

Failures:

  1) User pages after saving the user 
     Failure/Error: before { click_button submit }
     NameError:
       undefined local variable or method `submit' for #<RSpec::Core::ExampleGroup::Nested_1::Nested_4:0x007f8e816f7c70>
     # ./spec/requests/user_pages_spec.rb:50:in `block (3 levels) in <top (required)>'

  2) User pages after saving the user 
     Failure/Error: before { click_button submit }
     NameError:
       undefined local variable or method `submit' for #<RSpec::Core::ExampleGroup::Nested_1::Nested_4:0x007f8e841d4740>
     # ./spec/requests/user_pages_spec.rb:50:in `block (3 levels) in <top (required)>'

  3) User pages after saving the user 
     Failure/Error: before { click_button submit }
     NameError:
       undefined local variable or method `submit' for #<RSpec::Core::ExampleGroup::Nested_1::Nested_4:0x007f8e84265d80>
     # ./spec/requests/user_pages_spec.rb:50:in `block (3 levels) in <top (required)>'

Finished in 0.00577 seconds
3 examples, 3 failures

Failed examples:

rspec ./spec/requests/user_pages_spec.rb:53 # User pages after saving the user 
rspec ./spec/requests/user_pages_spec.rb:55 # User pages after saving the user 
rspec ./spec/requests/user_pages_spec.rb:54 # User pages after saving the user 

这是 user_pages_spec 文件

require 'spec_helper'

describe "User pages" do

    subject { page }

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

        before { visit user_path(user) }

        it { should have_selector('h1',    text: user.name) }
        it { should have_selector('title', text: user.name) }
    end

    describe "signup page" do
        before { visit signup_path }

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

    describe "signup" do

        before { visit signup_path }

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

        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

    describe "after saving the user" do
        before { click_button submit }
        let(:user) { User.find_by_email('user@example.com') }

        it { should have_selector('title', text: user.name) }
        it { should have_selector('div.alert.alert-success', text: 'Welcome') }
        it { should have_link('Sign out') }
    end
end

Answer 1

我在规范中快速修复了您的格式，现在看看，应该更清楚为什么...

您在signup 上下文中定义了let(:submit) { "Create my account" }，但您试图在after saving the user 上下文中在外部使用它。您需要将其移出以便双方都能看到它，或者在其他上下文中重新定义它。

说实话，你的规范中的一部分没有意义，你要提交什么？

Answer 2

要测试 保存用户后 块，您应该在创建用户成功时执行此操作，这意味着 内部 with valid information 上下文，因此您必须将上下文 after saving user 嵌套在内部describe "with valid information" do 在 "sign up" 上下文中，并且您已经有 let(:submit) 声明来创建您的提交变量。

您的代码将如下所示：

describe "sign up" do 

  before { visit signup_path } 

  let(:submit) { "Create my account" } 
  .
  .
  .
  .

  describe "with valid information" do

    # here you fill fields for signing up a new user
    .
    .
    .
    describe "after saving the user" do
      # when you are here, you have already filling fields of signup form, so you should submit these fields and the code below let you do this
      before { click_button submit }
      let(:user) { User.find_by_email('user@example.com') }

      it { should have_selector('title', text: user.name) }
      it { should have_selector('div.alert.alert-success', text: 'Welcome') }
      it { should have_link('Sign out') }
    end
  end
end

结论：只需将after saving the user块移动到sign up块的end之前