Gem dependencies coverted to 1.2, some tests failing

Gemfile

@@ -11,4 +11,5 @@ group :test do
   end
 end
 
-gem 'spree', '~> 1.1.3'
+gem 'spree_auth_devise', :git => 'git://github.com/spree/spree_auth_devise'
+gem 'spree', '~> 1.2'

Rakefile

@@ -1,30 +1,15 @@
-# encoding: utf-8
-require 'rake'
-require 'rake/testtask'
-require 'rake/packagetask'
-require 'rubygems/package_task'
+require 'bundler'
+Bundler::GemHelper.install_tasks
+
 require 'rspec/core/rake_task'
 require 'spree/core/testing_support/common_rake'
 
 RSpec::Core::RakeTask.new
 
 task :default => [:spec]
 
-spec = eval(File.read('spree_address_book.gemspec'))
-
-Gem::PackageTask.new(spec) do |p|
-  p.gem_spec = spec
-end
-
-desc "Release to gemcutter"
-task :release => :package do
-  require 'rake/gemcutter'
-  Rake::Gemcutter::Tasks.new(spec).define
-  Rake::Task['gem:push'].invoke
-end
-
-desc "Generates a dummy app for testing"
+desc 'Generates a dummy app for testing'
 task :test_app do
   ENV['LIB_NAME'] = 'spree_address_book'
-  Rake::Task['common:test_app'].invoke
+  Rake::Task['common:test_app'].invoke 'Spree::User'
 end