Include the Jasmine gems in your gemfile

group :test, :development do
  gem 'jasmine'
  gem 'jasminerice'
  gem 'guard-jasmine'
end

And

$ bundle
$ rails g jasmine:install

This creates a couple files, including spec/javascripts/spec.js.coffee. Change that file to look like this:

#= require jquery
#= require angular-main
#= require angular-resource
#= require_tree ./

Include the AngularJS files:

Visit http://code.angularjs.org/ and choose a release. From the release page, copy the urls to the files you need and curl them into the appropriate directories. For example, for release 1.0.1:

$ curl http://code.angularjs.org/1.0.1/angular-1.0.1.js > vendor/assets/javascripts/angular-main.js
$ curl http://code.angularjs.org/1.0.1/angular-resource-1.0.1.js > vendor/assets/javascripts/angular-resource.js
$ curl http://code.angularjs.org/1.0.1/angular-mocks-1.0.1.js > spec/javascripts/helpers/angular-mocks.js

Then add angular.js and angular-resource.js to the asset pipeline. For example, in config/environments/production.rb:

config.assets.precompile += %w( angular.js )

And in app/assets/javascripts/, create a file angular.js:

//= require angular-main
//= require angular-resource

One could include angualr-main and angular-resource in application.js instead, but in an app with multiple, distinct Angular apps, I like to keep them completely distinct, and including a separate angular.js file in the asset pipeline means that AngularJS need only be downloaded once.