Shadow DOM support for Capybara
The capybara-shadowdom
gem adds basic support for the Shadow DOM to Capybara.
Installation
Add this line to your application's Gemfile:
gem 'capybara-shadowdom'
And then execute:
$ bundle install
Or install it yourself as:
$ gem install capybara-shadowdom
Usage
Require it in spec_helper.rb
:
require 'capybara/shadowdom'
Given the custom element:
<awesome-element>
<!-- #shadow-root start -->
<span>Hello shadow world!</span>
<input type="text" id="user_name">
<!-- #shadow-root end -->
</awesome-element>
You will be able to do:
within custom_element.shadow_root do
# Displays "Hello shadow world!":
puts page.text
# Asserts the text within the element:
assert_text "Hello shadow world!"
# Input elements within the shadow DOM will also be accessible:
fill_in "#user_name", with: "awesome@example.org"
end
Works also for RSpec
:
expect(page).to have_text("Hello shadow world!")
Browser Support
- Supported Selenium versions: 3.0 and above
- Supported Ruby versions: 2.7 and above
Supported drivers:
Driver | Browser | Support | Description |
---|---|---|---|
Selenium | IE11 | N/A | Shadow DOM is not supported. |
Selenium | Edge | ✅ | |
Selenium | Firefox | ❌ | Fails with Cyclic object value . |
Selenium | Chrome | ✅ | |
Selenium | Safari | ✅ | |
cuprite |
Embedded Chromium | ✅ | |
apparition |
Embedded Chromium | ❌ |
shadowRoot node can not be retrieved. |
Development
After checking out the repo, run bin/setup
to install dependencies. Then, run rake test
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 the created tag, and push the .gem
file to rubygems.org.
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/yuki24/capybara-shadowdom. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.
License
The gem is available as open source under the terms of the MIT License.
Code of Conduct
Everyone interacting in the Capybara::Shadowdom project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.