Initial Datamapper test suite

Test suite runs, however there's still some failing tests. This allows us to at least have a working test suite so they can fix these datamapper spec failures individually.

test/orm/data_mapper.rb

@@ -0,0 +1,4 @@
+require File.expand_path('../../rails_app/config/environment', __FILE__)
+require 'rails/test_help'
+
+DataMapper.auto_migrate!

test/rails_app/app/data_mapper/admin.rb

@@ -0,0 +1,17 @@
+class Admin
+  include DataMapper::Resource
+  
+  property :id,   Serial
+  property :username, String
+  
+  devise :authenticatable, :registerable, :timeoutable, :recoverable
+
+  def self.find_for_authentication(conditions)
+    last(conditions)
+  end
+  
+  def self.create!(*args)
+    create(*args)
+  end
+  
+end

test/rails_app/app/data_mapper/user.rb

@@ -0,0 +1,21 @@
+class User
+  include DataMapper::Resource
+  
+  property :id, Serial
+  property :username, String
+  
+  devise :authenticatable, :http_authenticatable, :confirmable, :lockable, :recoverable,
+         :registerable, :rememberable, :timeoutable, :token_authenticatable,
+         :trackable
+
+  # :validatable disabled for now
+  timestamps :at
+  
+  def save!(*args)
+    save
+  end
+  
+  def self.create!(*args)
+    create(*args)
+  end
+end