Cucumber setup with spork and database_cleaner for mongo_mapper

env.rb

require 'rubygems'
require 'spork'
 
Spork.prefork do
  ENV["RAILS_ENV"] ||= "test"
  require File.expand_path(File.dirname(__FILE__) + '/../../config/environment')
  
  ...cucumber and capybara requires...

  require 'database_cleaner'
  require 'database_cleaner/cucumber'
  require 'database_cleaner/mongo_mapper/truncation'
  DatabaseCleaner.strategy = :truncation
end
 
Spork.each_run do
  ActionController::Base.allow_rescue = false
  
  Before do
    DatabaseCleaner.start
  end
  
  After do
    DatabaseCleaner.clean
  end
end