我在这里也张贴了类似的错误，但都无法解决我的问题。
我的文件“ spec / request / news_controller_spec.rb”看起来像：
require 'spec_helper'
describe "NewsController" do
include Devise::TestHelpers
describe "GET /news" do
before(:each) do
@request.env["devise.mapping"] = Devise.mappings[:user]
@user = Factory.create(:user)
@user.confirm!
sign_in @user
end
it "after login should show the latest news an screen" do
page.should have_content("News")
end
end
end
如果运行测试，我将得到：
Failures:
1) Campaigns GET /news works!
Failure/Error: Unable to find matching line from backtrace
NoMethodError:
undefined method `env' for nil:NilClass
# /Users/.../gems/devise-1.5.3/lib/devise/test_helpers.rb:25:in `setup_controller_for_warden'
# /Users/.../gems/rspec-rails-2.8.1/lib/rspec/rails/adapters.rb:15:in `block (2 levels) in setup'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:35:in `instance_eval'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:35:in `run_in'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `block in run_all'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `each'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:70:in `run_all'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/hooks.rb:368:in `run_hook'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `block in run_before_each_hooks'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `each'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:292:in `run_before_each_hooks'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example.rb:217:in `run_before_each'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example.rb:79:in `block in run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example.rb:173:in `with_around_hooks'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example.rb:77:in `run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:355:in `block in run_examples'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:351:in `map'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:351:in `run_examples'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:337:in `run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `block in run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `map'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/example_group.rb:338:in `run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `block (2 levels) in run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `map'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:28:in `block in run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/reporter.rb:34:in `report'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/command_line.rb:25:in `run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:80:in `run_in_process'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:69:in `run'
# /Users/.../gems/rspec-core-2.8.0/lib/rspec/core/runner.rb:10:in `block in autorun'
我按照https://github.com/plataformatec/devise/wiki/How-To%3a-Controllers-and-Views-tests-with-Rails-3-%28and-rspec%29和其他类似问题的说明进行操作，但是找不到解决方案。
我正在使用以下gemset：
水豚（1.1.2）
设计（1.5.3）
factory_girl_rails（1.6.0）
导轨（3.2.0，3.1.1）
rspec（2.8.0）
rspec核心（2.8.0）
rspec-期望（2.8.0）
rspec-mocks（2.8.0）
rspec-rails（2.8.1）
和其他一些宝石。
任何人都可以帮助我，让与登录用户一起进行的集成测试开始运行。在这种情况下，仅当用户登录时才显示新闻。
谢谢。
最佳答案
实际上，我确实遇到了同样的问题，在搜索了一下之后，我发现直接包含Warden::Test::Helpers是用于请求规范的更简洁的解决方案，因为它以编程方式登录/注销用户，如下所示：
# spec/support/request_helpers.rb
require 'spec_helper'
include Warden::Test::Helpers
module RequestHelpers
def create_logged_in_user
user = Factory(:user)
login(user)
user
end
def login(user)
login_as user, scope: :user
end
end
简而言之，只需包含
Warden::Test::Helpers，然后使用login_as <your_user>方法就可以了！从此处获取的解决方案：http://simple10.com/rspec-capybara-devise-login-tests/
关于rspec - 带设计的rspec集成测试抛出NoMethodError错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/8996246/