spec_helper.rb

require 'rubygems'

ENV["RAILS_ENV"] ||= 'test'

if defined? SimpleCov
  require 'simplecov'
  SimpleCov.start 'rails'
end

require 'rails/application'
require File.expand_path("../../config/environment", __FILE__)

require 'rspec/rails'
require 'rspec/autorun'
require 'cancan/matchers'
require 'capybara/rspec'
require 'factory_girl_rails'


# Check pending migrations
pending_migrations = ActiveRecord::Migrator.new(:up, ActiveRecord::Migrator.migrations_paths).pending_migrations
if pending_migrations.any?
  puts "You have pending migrations:\n#{pending_migrations.map(&:filename) * "\n"}"
  exit 1
end

RSpec.configure do |config|
  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  if ENV['ZEUS_MASTER_FD']
    config.before :all do
      FactoryGirl.reload
    end
  end

# To separate specs' logs
  config.before do
    Rails.logger.warn("\n\n\n#{'='*30}#{example.location}#{'='*30}\n\n\n")
  end

  # render views in controller specs
  config.render_views

  config.include Devise::TestHelpers, :type => :controller
  # If true, the base class of anonymous controllers will be inferred
  # automatically. This will be the default behavior in future versions of
  # rspec-rails.
  config.infer_base_class_for_anonymous_controllers = false

  config.treat_symbols_as_metadata_keys_with_true_values = true

  config.filter_run :focus => true
  config.run_all_when_everything_filtered = true

  config.include Capybara::RSpecMatchers, :type => :helpers
  config.include Capybara::RSpecMatchers, :type => :views
end

Capybara.default_wait_time = 10
Capybara.javascript_driver = :webkit

Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| load f }

#Capybara use the same connection
class ActiveRecord::Base
  mattr_accessor :shared_connection
  @@shared_connection = nil

  def self.connection
    @@shared_connection || retrieve_connection
  end
end

# Forces all threads to share the same connection. This works on
# Capybara because it starts the web server in a thread.
ActiveRecord::Base.shared_connection = ActiveRecord::Base.connection

In case it helps someone else, the "Check pending migrations" part wasn't working for us on Rails 3.2.x. It seems to be a Rails 4.0 feature.