在 Rails 中使用 RSpec 和 Capybara 时未定义的方法“visit”

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问题的帖子，但没有一个解决方案适合我。其中大多数涉及的规格不在 /spec/features 中 - 而我的则在 /spec/features 中。

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 URL Helper 'new_sessions_path' 并且它一直给我一个错误undefined local variable or method 'new_sessions_path'。我知道它是有效的，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

我的宝石文件：

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 内的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

我尝试过定义上面的测试有和没有:type => :feature。无论哪种方式都没有区别。有什么想法我接下来应该尝试吗？

尝试添加：

  config.include Capybara::DSL

到你的配置块。

# 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