rspec users - Jan 2012 - Testing dragonfly image attachment.

Hi people.

I have the following problem when testing a project model with an
attached dragonfly logo: When building a project test record through
factory girl the project seems valid, but testing `project.should
be_valid` fails. I have tried printing the errors array to check, but
there seems to be no errors present on the project object. So what is
the deal? Am I simply missing something?

I have posted my code snippets below, and I would appreciate any input
you have, that could point me towards a solution.

# project.rb
class Project
  include Mongoid::Document
  include Mongoid::Slug
  include Mongoid::Timestamps

  field :logo_uid
  field :name
  field :description
  field :url
  field :featured, :type => Boolean, :default => false
  field :done_back_end, :type => Boolean, :default => false
  field :done_front_end, :type => Boolean, :default => false
  field :done_concept, :type => Boolean, :default => false
  field :done_design, :type => Boolean, :default => false
  field :done_identity, :type => Boolean, :default => false
  slug :name
  image_accessor :logo
 
attr_accessible :name, :description, :new_file, :logo, :url, :featured,
:done_back_end,
                  :done_front_end, :done_concept, :done_design, :done_identity

  belongs_to :user
  embeds_many :project_images

  validates :logo, :presence => true, :on => :create
  validates :name, :presence => true
  validates :name, :uniqueness => true

  scope :featured, where(:featured => true)
end

# project_spec.rb
require ''spec_helper''
describe Project do
  let(:project) { Factory.build(:project) }
  context "validations" do
    it "should be valid when build" do
      project.should be_valid
    end
  end
end

# factories.rb
FactoryGirl.define do
  factory :project do
    name Faker::Name.name
    description Faker::Lorem.paragraphs
    url Faker::Internet.domain_name
    user Factory.build(:user)
    project_images [Factory.build(:project_image),
Factory.build(:project_image)]
    logo "#{Rails.root}/spec/assets/test-image.jpg" # This image
exists
  end
end