Add Selenium support file for specs and include headless for Vagrant

Signed-off-by: Sebastian Serth <Sebastian.Serth@student.hpi.de>

spec/support/selenium.rb

@@ -0,0 +1,21 @@
+require 'capybara/rspec'
+require 'selenium/webdriver'
+
+if ENV['HEADLESS_TEST'] == 'true' || ENV['USER'] == 'vagrant'
+  require 'headless'
+
+  headless = Headless.new
+  headless.start
+end
+
+Capybara.register_driver :selenium do |app|
+  profile = Selenium::WebDriver::Firefox::Profile.new
+  profile['intl.accept_languages'] = 'en'
+  capabilities = Selenium::WebDriver::Remote::Capabilities.firefox(elementScrollBehavior: 1)
+  options = Selenium::WebDriver::Firefox::Options.new
+  options.profile = profile
+  driver = Capybara::Selenium::Driver.new(app, browser: :firefox, desired_capabilities: capabilities, options: options)
+  driver.browser.manage.window.resize_to(1280, 960)
+  driver
+end
+Capybara.javascript_driver = :selenium