Rails test setup

Gemfile

group :test do
  gem 'rspec-rails'
  gem 'simplecov', require: false
  gem 'rails-controller-testing'
  gem 'shoulda-matchers'
  gem 'faker'
  gem 'capybara'
  gem 'poltergeist'

  gem 'factory_girl_rails'
  gem 'database_cleaner'
end

rails_helper.rb

Capybara.register_driver :poltergeist do |app|
  Capybara::Poltergeist::Driver.new(app, js_errors: false)
end

DatabaseCleaner.strategy = :truncation

RSpec.configure do |config|
  config.use_transactional_fixtures = false

  config.before(:suite) do
    DatabaseCleaner.clean_with(:truncation)
  end

  config.before(:each, :js => true) do
    DatabaseCleaner.strategy = :truncation
  end

  config.before(:each) do
    DatabaseCleaner.start
  end

  config.after(:each) do
    DatabaseCleaner.clean
  end
end

spec_helper.rb

require 'simplecov'
SimpleCov.start 'rails'