This gem makes it possible to use Capybara for (partially) remote testing. It inherits most functionality from the RackTest driver and only uses Mechanize for remote requests.

It is currently in use to test the integration between a Rails application and Twitter authorization and sharing.

This gem is a Capybara extension. I have been inspired by the Capybara driver and some earlier efforts for a Mechanize driver.

Thanks to Pinkelstar for giving me the time and the need to develop this gem.


gem install capybara-mechanize


For support with:

  • Capybara 2.x, use versions of this gem less than or equal 1.11.0
  • Capybara 3.x, use versions of this gem greater than or equal to 1.12.0

Usage without Cucumber

require 'capybara/mechanize'

Further configuration of Mechanize

Upon instantiation of a Driver, you can configure mechanize agent options in a #configure block:

Capybara.register_driver :mechanize do |app|
  driver =
  driver.configure do |agent|
    # Configure other Mechanize options here.
    agent.log = "mech.log"
    agent.user_agent_alias = 'Mac Safari'

Usage without rack app

You can configure it to use for external servers. Until this issue is resolved, you can configure with

Capybara.register_driver :mechanize do |app| {})

and use like this

session = :mechanize
session.visit ''

Usage with Cucumber and tags

A @mechanize tag is added to your hooks when you add the following line to your env.rb

require 'capybara/mechanize/cucumber'

The following scenario will then be using the Mechanize driver

Scenario: do something remote
  When I click the remote link

Remote testing

When you want to use this driver to test a remote application. You have to set the app_host:

Capybara.app_host = ""

Note that I haven't tested this case for my self yet. The Capybara tests pass for this situation though so it should work! Please provide me with feedback if it doesn't.

HTTP errors

If you receive the error Net::HTTP::Persistent::Error: too many connection resets, try setting a timeout value: page.driver.browser.agent.idle_timeout = 0.4.

Running tests

Run bundler

bundle install

Then you are ready to run the test like so

bundle exec rake spec


  • Test this driver with non-rack/non-ruby projects

Note on Patches/Pull Requests

  • Fork the project.
  • Make your feature addition or bug fix.
  • Add tests for it. This is important so I don't break it in a future version unintentionally.
  • Commit, do not mess with rakefile, version, or history. (if you want to have your own version, that is fine but bump version in a commit by itself I can ignore when I pull)
  • Send me a pull request. Bonus points for topic branches.

Copyright (c) 2010-2013 Jeroen van Dijk. See LICENSE for details.