This is a madness. There are so many gems to install:
gem 'rspec', :group => [:development, :test]
gem 'rspec-rails', :group => [:development, :test]
gem 'database_cleaner', :group => :test
gem 'factory_girl_rails', :group => :test
gem 'mongoid-rspec', :group => :test
gem 'cucumber-rails', :group => :test
gem 'capybara', :group => :test
gem 'win32-process', :group => :test
gem 'spork', :git => "https://github.com/timcharper/spork.git", :group => :test
rspec-rails is obvious. It is RSpec for Rails.
database_cleaner is for truncate database. It supports Mongoid. That's why I use it.
factory_girl_rails is a mocking library for Rails. It's so simple.
mongoid-rspec is an adapter of RSpec to Mongoid.
cucumber-rails is a BDD testing framework for Rails.
capybara is for testing AJAX and javascript. It can fire an event click on a button or check if the result HTML contains some specific values.
Spork preloads the Rails environment, so that the testing runs faster.
Now you'll need to install RSpec
rails generate rspec:install
Before you run spork, you'll have to make some changes to application.rb in order to make Spork automatically reload any changes
class Application < Rails::Application
.
.
.
if Rails.env.test?
initializer :after => :initialize_dependency_mechanism do
ActiveSupport::Dependencies.mechanism = :load
end
end
end
And in spec_helper.rb, we put this line at the bottom of Spork.prefork block:
ActiveSupport::Dependencies.clear
And in Spork.each_run block, we put in these lines:
load "#{Rails.root}/config/routes.rb"
Dir["#{Rails.root}/app/**/*.rb"].each { |f| load f }
Now you can start Spork
bundle exec spork --bootstrap
bundle exec spork
Related links: https://github.com/RailsApps/rails3-mongoid-devise/wiki/Tutorial
