A nice and tidy Capybara driver for headless Chrome. Even supports file downloads!
require "capybara/headless_chrome" somewhere in your test setup. This will register the
:chrome driver, and make it Capybara's default.
If you want to change some of the options Chrome is started with, just reregister the driver:
Capybara.register_driver :chrome do |app| Capybara::HeadlessChrome::Driver.new(app, lang: "es_MX", headless: false, window_size: [1024,768]) end
Consult https://peter.sh/experiments/chromium-command-line-switches/ for a list of options. Although these are command-line options, conversion from a Ruby hash works as you would expect. E.g.
headless: true works out to
window_size: [1024,768] works out to
Working with Downloaded Files
The Capybara session is extended with a single
#downloads method that provides access to files downloaded during the session.
page.click_link "Download Report" page.downloads.filenames # => ["report.csv"] page.downloads["report.csv"] # => #<File:report.csv>
Note that the
# method is wrapped with Capybara's synchronize, so it will keep trying to find the file for up to
Be sure to run
page.downloads.reset at the beginning of every test run to empty the downloaded files list.
If you're using Cucumber, you can
require "capybara/headless_chrome/cucumber" somewhere in your cucumber configuration to set this up for you.
Add this to your application's Gemfile:
group :test do gem 'capybara-headless_chrome' end
And then execute:
Or install it yourself as:
$ gem install capybara-headless_chrome
After checking out the repo, run
bin/setup to install dependencies. Then, run
rake spec to run the tests. You can also run
bin/console for an interactive prompt that will allow you to experiment.
To install this gem onto your local machine, run
bundle exec rake install. To release a new version, update the version number in
version.rb, and then run
bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the
.gem file to rubygems.org.
Bug reports and pull requests are welcome on GitHub at https://github.com/botandrose/capybara-headless_chrome.
The gem is available as open source under the terms of the MIT License.