Capybara没有使用js启动其自己的服务器：true

Question

我正在尝试开始在我的应用程序上编写测试，但是我遇到js: true的问题，这没有启动它自己的服务器。

环境金属

 rails -v #Rails 5.2.0
 ruby -v ruby 2.4.2p198

Gemfile：

gem 'capybara'
gem 'selenium-webdriver'

我遵循了本教程中的配置https://www.devmynd.com/blog/setting-up-rspec-and-capybara-in-rails-5-for-testing/

我知道它没有启动它的欠服务器，因为这是我得到的错误

Failures:

  1) Login
     Failure/Error: expect(page).to have_content("Sarah")
       expected to find text "Sarah" in "This site can’t be reached\nlocalhost refused to connect.\nTry:\nChecking the connection\nChecking the proxy and the firewall\nERR_CONNECTION_REFUSED\nReload\nDETAILS"
     # ./spec/helpers/login.rb:9:in `login_user'

这是`login_user'文件中的＃./spec/helpers/login.rb:9：中的内容

require "rails_helper"
  RSpec.feature "Financial Profile", :type => :feature do

    scenario "just login", js: true do
      login_user
    end

    def login_user
      user = FactoryBot.create(:user, email: '[email protected]', name: 'Sarah Connor')
      login_as(user, :scope => :user, :run_callbacks => false)
      visit root_path
      expect(page).to have_content("Sarah")
      expect(page).to have_link("Logout")
    end
  end

现在，如果我做到了，这将非常完美

    scenario "just login", js: false do
      login_user
    end

Answer 1

这是我如何通过WSL和Ubuntu在Rails 5.2.3上使它工作。我不必在Windows中安装任何东西，但确实在Linux分区中安装了chrome。

# Gemfile
group :test do
  gem 'capybara', '~> 3.20', '>= 3.20.2'
  gem 'webdrivers', '~> 4.1'
end

# spec/rails_helper.rb
Capybara.register_driver :headless_chrome do |app|
  capabilities = Selenium::WebDriver::Remote::Capabilities.chrome(
      'goog:chromeOptions': { args: %w(no-sandbox headless disable-gpu window-size=1280,1024 disable-features=VizDisplayCompositor) } )

  Capybara::Selenium::Driver.new(app, browser: :chrome, desired_capabilities: capabilities)
end

然后进行相关测试：

        describe 'the test that needs javascript', js: true do
          before(:all) do
            # Selenium::WebDriver.logger.level = :debug
            Capybara.current_driver = :headless_chrome
            Capybara.javascript_driver = :headless_chrome
          end

          after(:all) do
            Capybara.use_default_driver
          end

          it 'tests something' do
            expect(1).to eq(1)
          end
        end