Money rails type lost

.ruby-version

@@ -0,0 +1 @@
+2.1.4

Gemfile

@@ -10,3 +10,6 @@ when /3/
 else
   gem 'mongoid', version
 end
+
+
+gem 'money-rails'

spec/mongoid-history/money-rails.rb

@@ -0,0 +1,31 @@
+require 'spec_helper'
+require 'money-rails'
+
+
+class MyModel
+   include Mongoid::Document
+   include Mongoid::Timestamps
+   include Mongoid::History::Trackable
+
+   field :name, type: String
+   field :date, type: Date 
+   field :amount, type: Money
+
+   track_history track_create: true
+end
+
+describe "Model with MoneyRails field" do
+  before(:example) do
+    @my=MyModel.create(name: "A", date: Date.today, amount: 200.to_money)
+  end
+
+  it "should have a valid amount field with class Money" do
+    @my.date.class.should eq(Date)
+    @my.amount.class.should eq(Money)
+  end
+
+  it "should have a history entry with a valid amount field with class Money " do 
+    @my.history_tracks.last[:modified][:date].class.should eq (Time)
+    @my.history_tracks.last[:modified][:amount].class.should eq(Money)
+  end
+end

spec/support/money_rails.rb

@@ -0,0 +1,5 @@
+require 'money-rails/test_helpers'
+
+RSpec.configure do |config|
+  config.include MoneyRails::TestHelpers
+end