gistfile1.txt

require 'rubygems'
require 'mongoid'

Mongoid.configure do |config|
  config.master = Mongo::Connection.new.db("mongoid_key_test")
end

Mongoid.master.collection("users").drop

class User
  include Mongoid::Document
  field :username
  key :username
  validates_uniqueness_of :username
end

2.times do
  begin
    @user =  User.create(:username => "Charles")
  rescue => e
    puts "ERROR!: #{e}"
  end
  
  if @user and !@user.valid?
    puts "FAILED VALIDATION"
    puts @user.errors.inspect
  end
end