persistence bug repro case

persistence_test.rb

class PersistenceTest
  include Mongoid::Document
  include Mongoid::Timestamps

  BRAINTREE_SYNC_STATUSES = %w(new synced changed)

  #
  # Top-level Fields
  #
  field :terms_accepted_at,    :type => DateTime
  field :first_billing_date,   :type => Date
  field :next_billing_date,    :type => Date
  field :trial_duration,       :type => Integer, :default => 0
  field :charge_attempts,      :type => Integer, :default => 0
  field :migrated_pmt,         :type => String
  field :pre_coins_hub,        :type => Boolean, :default => false
  field :braintree_billing,    :type => Boolean, :default => true
  field :sync_status,          :type => String, :default => "new"
  field :reminder_sent,        :type => Boolean, :default => false
  field :override_amount,      :type => Integer
  field :terms_accepted_at,    :type => DateTime
  field :activated_at,         :type => DateTime

  #
  # Validations
  #
  validates_inclusion_of    :sync_status, :in => BRAINTREE_SYNC_STATUSES

  def created_in_braintree?
    self.sync_status != "new"
  end

  def synced?
    self.sync_status == "synced"
  end

  def changed?
    self.sync_status == "changed"
  end
end