我无法让水豚与rspec一起工作。它给了我这个错误：

undefined method `visit' for #<RSpec::Core::ExampleGroup::Nested_1:0x16529f8 @example=nil>

我知道有很多关于此的帖子，但是没有解决方案对我有用。其中大多数涉及的规范不在/ spec / features中-属于我的。

首先是错误：

$bundle exec rspec spec
F

Failures:

  1) security signs users in
     Failure/Error: visit "/sessions/new"
     NoMethodError:
       undefined method `visit' for #<RSpec::Core::ExampleGroup::Nested_1:0x16529f8 @example=nil>
     # ./spec/features/security_spec.rb:4:in `(root)'

 Finished in 0.006 seconds
 1 example, 1 failure

Failed examples:

rspec ./spec/features/security_spec.rb:3 # security signs users in

我认为重要的是要注意，起初我使用的是URL Helper'new_sessions_path'，但它一直给我一个错误undefined local variable or method 'new_sessions_path'。我知道这是有效的，因为：

$ rake routes
logout_sessions GET    /sessions/logout(.:format) sessions#logout
       sessions POST   /sessions(.:format)        sessions#create
   new_sessions GET    /sessions/new(.:format)    sessions#new
      contracts POST   /contracts(.:format)       contracts#create
  new_contracts GET    /contracts/new(.:format)   contracts#new
 edit_contracts GET    /contracts/edit(.:format)  contracts#edit
                GET    /contracts(.:format)       contracts#show
                PUT    /contracts(.:format)       contracts#update
                DELETE /contracts(.:format)       contracts#destroy
           root        /                          contracts#index

我的Gemfile：

source 'https://rubygems.org'

gem 'rails', '3.2.11'
gem 'execjs'

group :assets do
  gem 'sass-rails',   '~> 3.2.3'
  gem 'coffee-rails', '~> 3.2.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'
gem 'activerecord-oracle_enhanced-adapter', '~> 1.4.1'
gem 'jruby-openssl'
gem 'therubyrhino'
gem 'kaminari'
gem 'nokogiri'

group :development do
  gem 'warbler'
end

group :test do
  gem 'rspec-rails'
  gem 'capybara'
  gem 'activerecord-jdbcsqlite3-adapter'
end

my_app / spec中的spec_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__)
require 'rspec/rails'
require 'rspec/autorun'

# Capybara integration
require 'capybara/rspec'
require 'capybara/rails'

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  # config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.use_transactional_fixtures = true
  config.infer_base_class_for_anonymous_controllers = false
  config.order = "random"
  # Include path helpers
  config.include Rails.application.routes.url_helpers
end

my_app / spec / features / security_spec.rb：

describe "security", :type => :feature do
  it "signs users in" do
    visit "/sessions/new"
    fill_in "username", :with => "user"
    fill_in "password", :with => "pass"
    click_button "Sign In"

    page.should have_content('Login Successful')
  end
end

我试过定义上面有和没有的测试:type => :feature。两种方式都没有区别。有什么想法我接下来应该尝试什么？

尝试添加：

  config.include Capybara::DSL

到您的配置块。

# This file is copied to spec/ when you run 'rails generate rspec:install'
ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each {|f| require f}

RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  # config.fixture_path = "#{::Rails.root}/spec/fixtures"
  config.use_transactional_fixtures = true
  config.infer_base_class_for_anonymous_controllers = false
  config.order = "random"
  # Include path helpers
  config.include Rails.application.routes.url_helpers

  config.include Capybara::DSL

end

require 'rails_helper'在功能的顶部添加最终解决了我的问题：

require 'rails_helper'

describe "security", :type => :feature do

  it "signs users in" do
    visit new_sessions_path
    fill_in "username", :with => "user"
    fill_in "password", :with => "pass"
    click_button "Sign In"

    page.should have_content('Login Successful')
  end
end

这对我来说似乎很奇怪，因为我在rspec和capybara上看到的每个示例都没有这个要求，但是哦。问题解决了。

原始答案（旧版本的rspec）

require 'spec_helper'由较早版本的RSpec使用。更好的答案是require 'rails_helper'。

由于Capybara 2.0必须使用文件夹规范/功能，因此Capybara命令不再适用于文件夹规范/请求。

尝试在一个before块中执行所有设置：

规范/功能/security_spec.rb

describe "security" do
  before do
    visit "/sessions/new"
    fill_in "username", :with => "user"
    fill_in "password", :with => "pass"
    click_button "Sign In"
  end

  it "signs users in" do
    page.should have_content('Login Successful')
  end
end

我也有这个问题

在我的功能顶部添加require'rails_helper'最终解决了我的问题：

require 'rails_helper'

RSpec.describe "Products", type: :request do
 describe "GET /products" do
 it "display tasks" do
  Product.create!(:name => "samsung")
  visit products_path
  page.should have_content("samsung")
  #expect(response).to have_http_status(200)
  end
 end
end

并在rails_helper.rb中添加'config.include Capybara :: DSL'

RSpec.configure do |config|

 config.fixture_path = "#{::Rails.root}/spec/fixtures"

 config.use_transactional_fixtures = true

 config.infer_spec_type_from_file_location!

 config.include Capybara::DSL

end