minitest with DatabaseCleaner transactions, elasticsearch

Gemfile

gem 'minitest'
gem 'minitest-rails'

group :development, :test do
  # run when something change
  gem 'guard'
  gem 'guard-livereload'
#  gem 'guard-rails_best_practices'
  gem 'guard-minitest'

  # factories
#  gem 'fabrication'
  gem 'fabrication', github: 'paulelliott/fabrication'

  # mocks and stubs
  gem 'mocha'

  # test suite
#  gem 'minitest'
#  gem 'minitest-rails'

  # output formatter
  gem 'minitest-reporters'
  #gem 'minitest-colorize'

  # clean database when needed
  gem 'database_cleaner'

  # integration testing
  gem 'capybara'
  gem 'minitest-rails-capybara'
  gem 'poltergeist'
  gem 'connection_pool'

  gem 'capistrano', '~> 3.3.0', require: false
  gem 'capistrano-rails', '~> 1.1.2', require: false
  gem 'capistrano-bundler', require: false
  gem 'capistrano-rbenv', '~> 2.0', require: false
  gem 'cape', require: false
  # noecho password to the ssh key
  gem 'highline', require: false
#  gem 'capistrano3-unicorn', require: false
  gem 'capistrano-unicorn-edge', require: false

  gem 'jslint_on_rails', require: false
end

gem 'test_after_commit', :group => :test

test_helper.rb

ENV["RAILS_ENV"] = ENV["RACK_ENV"] = "test"

require File.expand_path('../../config/environment', __FILE__)
require 'rails/test_help'
require 'minitest/autorun'
require "minitest/reporters"
require "minitest/rails"
require "minitest/rails/capybara"
require "capybara/rails"
require 'capybara/poltergeist'
require 'mocha/mini_test'
require 'fabrication'
require 'database_cleaner'
require 'connection_pool'

Minitest::Reporters.use! Minitest::Reporters::SpecReporter.new

## monkeypatch for AR use shared connection
# now poltergeist should work along with transactional fixtures
class ActiveRecord::Base
	mattr_accessor :shared_connection
	@@shared_connection = nil
	 
	def self.connection
		@@shared_connection || ConnectionPool::Wrapper.new(:size => 1) { retrieve_connection }
	end
end
ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection
# transactions are _much_ faster, but have some limitations:
# - after_commit callback in models won't work
# - and poltergeist runs in another thread and data from transaction aren't available
#   but works with patch above
DatabaseCleaner.strategy = :transaction
#DatabaseCleaner.strategy = :truncation
Capybara.javascript_driver = :poltergeist
Capybara.default_driver = :poltergeist

# clean all database beforehand
DatabaseCleaner.clean_with(:truncation)

#def MiniTest.filter_backtrace(bt)
#	  bt
#end

class ActionController::TestCase
  include Devise::TestHelpers
end

class ActiveSupport::TestCase
  ActiveRecord::Migration.check_pending!
	self.use_transactional_fixtures = true

	def setup
		DatabaseCleaner.start
	end

	def teardown
		DatabaseCleaner.clean

		Category.__elasticsearch__.create_index!(force: true)
#		Category.tire.create_elasticsearch_index

		Advert.__elasticsearch__.create_index!(force: true)
#		Advert.tire.create_elasticsearch_index

		Support::Area.__elasticsearch__.create_index!(force: true)
#		Support::Area.tire.create_elasticsearch_index
	end

  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  #
  # Note: You'll currently still have to declare fixtures explicitly in integration tests
  # -- they do not yet inherit this setting
  fixtures :all

  # Add more helper methods to be used by all tests here...
end