spec/support/lite/nulldb.rb

nulldb.rb

require 'nulldb'

module NullDB
  class << self
    def nullify(options={})
      begin
        @prev_connection = ActiveRecord::Base.connection_pool.try(:spec)
      rescue
      end
      ActiveRecord::Base.establish_connection(options.merge(:adapter => :nulldb))
    end
  end
end

def setup_nulldb
  schema_path = File.expand_path('../../../db/schema.rb', File.dirname(__FILE__))
  NullDB.nullify(:schema => schema_path)
end

def teardown_nulldb
  NullDB.restore
end

RSpec.configure do |config|
  config.before :each do
    setup_nulldb
  end

  config.after :each do
    teardown_nulldb
  end
end