Setting up Teaspoon with Webpacker

gistfile1.txt

# Gemfile

group :test do
  gem 'webdrivers'
end

# app/packs/spec.js

const specContext = require.context("../../spec/javascript", true, /_spec\.js$/)
specContext.keys().forEach(specContext)

# spec/teaspoon_env.rb

require 'webdrivers'

Teaspoon.configure do |config|
  ...
  config.suite do |suite|
    ...
    suite.boot_partial = '/boot'
    ...
  end
  ...
  config.driver = :selenium
  config.driver_options = {
    client_driver: :chrome,
    selenium_options: {
      options: Selenium::WebDriver::Chrome::Options.new(args: ['headless', 'disable-gpu'])
    }
  }
end

# spec/javascript/fixtures/_boot.html.erb

<%= javascript_pack_tag 'spec', debug: @suite.config.expand_assets %>
<script type="text/javascript">
  Teaspoon.onWindowLoad(Teaspoon.execute);
</script>