Switch to selenium with chrome headless

.travis.yml

 language: ruby
+sudo: false
+addons:
+  apt:
+    packages:
+      - chromium-chromedriver
 cache: bundler
 bundler_args: --without development
 before_script:
-  - "sh -e /etc/init.d/xvfb start"
-  - "bundle exec rake refinery:testing:dummy_app"
+  - export RETRY_COUNT=3
+  - export PATH=$PATH:/usr/lib/chromium-browser/
+  - bin/rake refinery:testing:dummy_app
 script:
   - "DISPLAY=:99.0 bundle exec rspec spec"
 env:
@@ -11,14 +17,8 @@ env:
   - DB=mysql
 notifications:
   email: true
-  irc:
-    use_notice: true
-    skip_join: true
-    channels:
-      - "irc.freenode.org#refinerycms"
   webhooks:
     - https://webhooks.gitter.im/e/b5d48907cdc89864b874
 rvm:
   - 2.5
-  - 2.4
-sudo: false
+  - 2.4
\ No newline at end of file

Gemfile

@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 
 gemspec
 
-git 'https://github.com/refinery/refinerycms', :branch => 'master' do
+git 'https://github.com/refinery/refinerycms', branch: 'master' do
   gem 'refinerycms'
 
   group :development, :test do
@@ -20,28 +20,26 @@ end
 
 if !ENV['TRAVIS'] || ENV['DB'] == 'mysql'
   group :mysql do
-    gem 'activerecord-jdbcmysql-adapter', '>= 1.3.0.rc1', :platform => :jruby
-    gem 'mysql2', :platform => :ruby
+    gem 'activerecord-jdbcmysql-adapter', '>= 1.3.0.rc1', platform: :jruby
+    gem 'mysql2', platform: :ruby
   end
 end
 
 if !ENV['TRAVIS'] || ENV['DB'] == 'postgresql'
   group :postgres, :postgresql do
-    gem 'activerecord-jdbcpostgresql-adapter', '>= 1.3.0.rc1', :platform => :jruby
-    gem 'pg', :platform => :ruby
+    gem 'activerecord-jdbcpostgresql-adapter', '>= 1.3.0.rc1', platform: :jruby
+    gem 'pg', platform: :ruby
   end
 end
 
 group :test do
   gem 'launchy'
   gem 'pry'
-  gem 'poltergeist'
+  gem 'selenium-webdriver', require: false
 end
 
 # Refinery/rails should pull in the proper versions of these
 group :assets do
   gem 'sass-rails'
   gem 'uglifier'
-end
-
-gem 'jquery-rails'
+end
\ No newline at end of file

spec/spec_helper.rb

@@ -16,9 +16,18 @@ RSpec.configure do |config|
   config.run_all_when_everything_filtered = true
 end
 
-# set javascript driver for capybara
-require 'capybara/poltergeist'
-Capybara.javascript_driver = :poltergeist
+require "selenium/webdriver"
+
+Capybara.register_driver :selenium_chrome_headless do |app|
+  browser_options = ::Selenium::WebDriver::Chrome::Options.new
+  browser_options.args << '--headless'
+  browser_options.args << '--no-sandbox'
+  browser_options.args << '--disable-gpu'
+  browser_options.args << '--window-size=1440,1080'
+  Capybara::Selenium::Driver.new(app, browser: :chrome, options: browser_options)
+end
+
+Capybara.javascript_driver = (ENV['CAPYBARA_DRIVER'] || :selenium_chrome_headless).to_sym
 
 # Requires supporting files with custom matchers and macros, etc,
 # in ./support/ and its subdirectories including factories.