Trying to get selenium working in rails 3 - “WebMock::NetConnectNotAllowedError”

Question

I\'m trying to use selenium for the first time in a rails 3 app. (I\'ve used it before with rails 2). I\'m in an rvm which of course has its own gemset.

I first r

Answer 1

We use this to enable normal requests in capybara, and allow selenium's callbacks everywhere, because they are fired after requests are finished.

# spec/spec_helper.rb
RSpec.configure do |config|
  config.before(:all, type: :request) do
    WebMock.allow_net_connect!
  end  

  config.after(:all, type: :request) do
    selenium_requests = %r{/((__.+__)|(hub/session.*))$}
    WebMock.disable_net_connect! :allow => selenium_requests
  end
end

Answer 2

It's because you are using webmock. It blocks all outbound HTTP requests.

If you don't need it, remove it from the Gemfile. If you do need it, then you may need to configure it more precisely to your needs:

https://github.com/bblimke/webmock

Answer 3

To improve on @grosser code

RSpec.configure do |config|
  config.before do
    WebMock.enable!
    if Capybara.current_driver != :rack_test
      selenium_requests = %r{/((__.+__)|(hub/session.*))$}
      WebMock.disable_net_connect! :allow => selenium_requests
      WebMock.disable_net_connect! :allow => "127.0.0.1:#{Capybara.current_session.driver.server_port}" # this only works for capybara selenium and capybara-webkit
    else
      WebMock.disable_net_connect!
    end
  end

  # for connections where we need to have network access we just tag it network
  config.before(:each, :network => true) do
    WebMock.disable!
  end
end

Answer 4

With this...

WebMock.disable_net_connect!(:allow_localhost => true)

you allow real web access to your localhost. It's perfect when you need to use Selenium for you application and, at the same time, mock external resources.

Answer 5

Good suggestions here. Another, more fine-tuneable, solution:

WebMock.disable_net_connect!(
  allow: [
    'localhost',
    'dynamo:8000',
    'pact-broker:81'
  ]
)

Works especially well for whitelisting docker-compose containers!

Answer 6

In my specific case my problem was in evergreen (javascript rspec).

I added:

WebMock.disable_net_connect! :allow_localhost => true

To my environments/env*.rb because evergreen doesn't load rspec helpers.