TE：尝试使用 RSpec 和 Capybara 时没有路由匹配错误

Question

我正在尝试使用 RSpec 和 Capybara 编写测试，但是，我总是收到以下错误：

No route matches [GET] "/semead/assets/application-7a2cf02623b8feb6b939ae72b917f262a79b289d0bf90f0a932f8eb031fe5ef6.js"

在某些情况下，application.css 资产也会出现同样的错误。我尝试使用 capybara-webkit 和 selenium-webdriver，但结果是一样的。

spec/rails_helper.rb

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
# Prevent database truncation if the environment is production
abort("The Rails environment is running in production mode!") if Rails.env.production?
require 'spec_helper'
require 'rspec/rails'
require 'support/factory_girl'
...

specs/spec_helper.rb

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'support/factory_girl'
require 'capybara/rspec'
...

spec/features/user_spec.rb

require 'rails_helper'    
RSpec.feature "Registering a new user", js: true do
  scenario "fill the registration form" do
    visit "/participantes/new"
    @user = build(:user)
...

更新 1：

这是完整的错误信息：

Failures:

  1) Registering a new user filling the registration form
     Failure/Error: raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"

     ActionController::RoutingError:
       No route matches [GET] "/semead/assets/application-f01fee28086ae8e064a7eda175e05dd4423d0429269ec94c142dc12b2eb6768d.css"
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/railties-4.2.6/lib/rails/rack/logger.rb:38:in `call_app'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/railties-4.2.6/lib/rails/rack/logger.rb:20:in `block in call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/railties-4.2.6/lib/rails/rack/logger.rb:20:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/methodoverride.rb:22:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/runtime.rb:18:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/lock.rb:17:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/sendfile.rb:113:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/railties-4.2.6/lib/rails/engine.rb:518:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/railties-4.2.6/lib/rails/application.rb:165:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/urlmap.rb:66:in `block in call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/urlmap.rb:50:in `each'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/urlmap.rb:50:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/capybara-2.11.0/lib/capybara/server.rb:43:in `call'
     # /home/jalerson/.rvm/gems/ruby-2.2.3/gems/rack-1.6.4/lib/rack/handler/webrick.rb:88:in `service'
     # ------------------
     # --- Caused by: ---
     # Capybara::ElementNotFound:
     #   Unable to find css ".select2-container"
     #   /home/jalerson/.rvm/gems/ruby-2.2.3/gems/capybara-2.11.0/lib/capybara/node/finders.rb:44:in `block in find'

更新 2：

这是我的config/application.rb，我设置为config.relative_url_root = '/semead'

config/application.rb

require File.expand_path('../boot', __FILE__)

require 'rails/all'

Bundler.require(*Rails.groups)

module Semead
  class Application < Rails::Application
    config.relative_url_root = '/semead'
    config.i18n.default_locale = 'pt-BR'
    config.active_record.raise_in_transactional_callbacks = true
  end
end

config/routes.rb

Rails.application.routes.draw do
  resources :trabalhos do
    get 'prazo_encerrado', on: :collection
  end
  resources :minicursos do
    resources :inscricoes
  end
  namespace :admin do
    resources :participantes do
      get 'aprovar_nota_empenho'
    end
    resources :organizadores
    resources :trabalhos do
      get 'avaliar'
      resources :avaliacoes, controller: 'avaliacoes_trabalhos'
    end
    resources :minicursos do
      resources :avaliacoes, controller: 'avaliacoes_minicursos'
    end
  end

  resources :sessions
  resources :participantes do
    get 'pagar'
  end
  # The priority is based upon order of creation: first created -> highest priority.
  # See how all your routes lay out with "rake routes".

  # You can have the root of your site routed with "root"
  root 'participantes#new'
...

Answer 1

我尚未证实这一点，但作为有根据的猜测 - 我相信 config.relative_url_root 只会影响路由生成，但不会影响路由处理。测试时，Capybara 将被测应用挂载在 '/' - https://github.com/teamcapybara/capybara/blob/master/lib/capybara/rails.rb，这意味着对 /semead/... 的请求将无法正确路由。最简单的解决方案可能是在 config/environments/test.rb 中将 config.relative_url_root 设置为 '/'

请注意，仅仅重新定义 Capybara.app 以将应用程序挂载到 /semead 可能行不通，因为 Capybara 安装中间件时需要执行一些操作。