# Minitest and Database Cleaner

## test_helper.rb

```ruby
require 'database_cleaner'
require 'database_cleaner_support'

DatabaseCleaner.clean_with :truncation
DatabaseCleaner.strategy = :transaction

class ActionDispatch::IntegrationTest
  # ...

  include DatabaseCleanerSupport

  # ...
end

class ActiveSupport::TestCase
  # ...

  include DatabaseCleanerSupport

  # ...
end
```

## database_cleaner_support.rb

```ruby
# frozen_string_literal: true

module DatabaseCleanerSupport
  def before_setup
    super
    DatabaseCleaner.start
  end

  def after_teardown
    DatabaseCleaner.clean
    super
  end
end

```