poltergeist

README.md

install phantomjs on server

capybara.rb

# spec/support/capybara.rb

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, phantomjs_logger: File.open("#{Rails.root}/log/test_phantomjs.log", 'a'))
end

Capybara.javascript_driver = :poltergeist

Capybara.save_and_open_page_path = '/tmp'

RSpec.configure do |config|
  config.append_after(:each) do
    Capybara.reset_sessions!
  end
end

Capybara::Screenshot.prune_strategy = :keep_last_run

Gemfile

# ...

  gem 'capybara'
  gem 'selenium-webdriver'
  gem 'poltergeist'
  gem 'phantomjs', require: 'phantomjs/poltergeist'
  gem 'capybara-screenshot'

# ...

spec_helper.rb

# ...
require 'rspec/rails'

# ADD THIS after require 'rspec/rails'
require 'capybara/poltergeist'
require 'capybara-screenshot/rspec'

# ...