```ruby
require 'simplecov'
SimpleCov.start 'rails' do
  add_group "Decorators", "app/decorators"
end

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'

require 'capybara/rails'
require 'capybara/rspec'

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

RSpec.configure do |config|
  config.mock_with :rspec
  config.use_transactional_fixtures = false
  config.include AsciiIo::ControllerMacros, :type => :controller
  config.infer_base_class_for_anonymous_controllers = false

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

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

GirlFriday::Queue.immediate!
DatabaseCleaner.strategy = :truncation
```

Use truncation cleaning strategy only for js tagged specs
user
```ruby
require 'simplecov'
SimpleCov.start 'rails' do
  add_group "Decorators", "app/decorators"
end

ENV["RAILS_ENV"] ||= 'test'
require File.expand_path("../../config/environment", __FILE__)
require 'rspec/rails'
require 'rspec/autorun'

require 'capybara/rails'
require 'capybara/rspec'

# Requires supporting ruby files with custom matchers and macros, etc,
# in spec/support/ and its subdirectories.
Dir[Rails.root.join("spec/support/**/*.rb")].each { |f| require f }

RSpec.configure do |config|
  config.mock_with :rspec
  config.use_transactional_fixtures = false
  config.include AsciiIo::ControllerMacros, :type => :controller
  config.infer_base_class_for_anonymous_controllers = false

  config.before(:each) do
    DatabaseCleaner.strategy = :transaction
  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

GirlFriday::Queue.immediate!
```
assistant