```ruby
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'rails/test_help'

class ActiveSupport::TestCase
  # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical order.
  fixtures :all

  # Add more helper methods to be used by all tests here...
end
```

Clean up test helper script
user
```ruby
# Encoding: utf-8
ENV['RAILS_ENV'] ||= 'test'
require File.expand_path('../../config/environment', __FILE__)
require 'rails/test_help'

# Extension for ActiveSupport?
class ActiveSupport
  # Test cases for ActiveSupport
  class TestCase
    # Setup all fixtures in test/fixtures/*.yml for all tests in alphabetical
    #   order.
    fixtures :all

    # Add more helper methods to be used by all tests here...
  end
end
```
assistant