Capybara の稼働状況を animation gif として保存するようなやつ

README.md

Requires Library

• ImageMagick
  • OSX: brew install imagemagick
  • Ubuntu: sudo apt-get install libmagickcore-dev libmagickwand-dev

Setup

bundle install --path vendor/bundle

Run

bundle exec ruby capybara_animation.rb

capybara_animation.rb

# -*- coding: utf-8 -*-

require 'RMagick'
require 'capybara'
require 'capybara/session'

module CapybaraAnimation
  class Recorder
    class << self
      def add_frame
        tempfile = Tempfile.new(['screenshot', '.gif'])
        Capybara.current_session.save_screenshot(tempfile.path)
        frames << tempfile
      end

      def frames
        @frames ||= []
      end

      def output
        paths = frames.map(&:path)
        images = Magick::ImageList.new(*paths)
        images.delay = 50
        images.write('/tmp/hoge.gif')
      end
    end
  end

  class Runner
    include Capybara::DSL

    def run
      visit '/'

      # Google it
      within(:css, 'div.tsf-p') do
        fill_in 'q', with: 'Capybara'
        click_button 'Google 検索'
      end

      # Result page
      click_link 'jnicklas/capybara · GitHub'

      # https://github.com/jnicklas/capybara
      click_link '.travis.yml'

      # https://github.com/jnicklas/capybara/blob/master/.travis.yml
      has_text? 'rbx-19mode'
    end
  end
end

module Capybara
  class Session
    SAVE_SCREENSHOT_METHODS = [
      :attach_file, :check, :choose, :click_link_or_button, :click_button,
      :click_link, :fill_in, :select, :uncheck, :unselect, :click_on,
      :evaluate_script, :visit
    ]

    SAVE_SCREENSHOT_METHODS.each do |method|
      alias_method "after_hook_#{method}".to_sym, method

      define_method method do |*args, &block|
        send("after_hook_#{method}", *args, &block)
        CapybaraAnimation::Recorder.add_frame
      end
    end
  end
end

Capybara.default_driver = :selenium
Capybara.app_host = 'http://www.google.co.jp'
Capybara.run_server = false

CapybaraAnimation::Runner.new.run
CapybaraAnimation::Recorder.add_frame # last frame
CapybaraAnimation::Recorder.output

Gemfile

source 'https://rubygems.org'

gem 'capybara'
gem 'rake'
gem 'selenium-webdriver'
gem 'json'
gem 'rmagick'