### Install Database Cleaner Sequel Gem

Source: https://github.com/databasecleaner/database_cleaner-sequel/blob/main/README.md

Add the database_cleaner-sequel gem to your Gemfile for use in the test environment.

```ruby
# Gemfile
group :test do
  gem 'database_cleaner-sequel'
end
```

--------------------------------

### Configure Database Cleaner with Sequel

Source: https://github.com/databasecleaner/database_cleaner-sequel/blob/main/README.md

Set up Database Cleaner to use the Sequel adapter with a specific strategy (e.g., transaction) and integrate it with Minitest for automatic cleaning before and after tests.

```ruby
DatabaseCleaner[:sequel].strategy = :transaction

class Minitest::Spec
  before :each do
    DatabaseCleaner[:sequel].start
  end

  after :each do
    DatabaseCleaner[:sequel].clean
  end
end
```

--------------------------------

### Database Cleaner Sequel Strategy Configuration

Source: https://github.com/databasecleaner/database_cleaner-sequel/blob/main/README.md

Configure the truncation or deletion strategies for Database Cleaner with Sequel, specifying which tables to include or exclude.

```ruby
# Only truncate the "users" table.
DatabaseCleaner[:sequel].strategy = :truncation, only: ["users"]

# Delete all tables except the "users" table.
DatabaseCleaner[:sequel].strategy = :deletion, except: ["users"]
```

--------------------------------

### Database Cleaner Sequel API

Source: https://github.com/databasecleaner/database_cleaner-sequel/blob/main/README.md

Provides methods for configuring and managing database cleaning operations with the Sequel adapter.

```APIDOC
DatabaseCleaner[:sequel]
  - Selects the Sequel adapter for database cleaning.

  .strategy = strategy_name, options = {}
    - Sets the cleaning strategy. Supported strategies: :transaction, :truncation, :deletion.
    - Options for :truncation and :deletion:
      - :only (Array<String>): List of table names to include.
      - :except (Array<String>): List of table names to exclude.
      - :pre_count (Boolean): If true, checks table row counts before cleaning (defaults to false).

  .start
    - Starts the database cleaning process for the current strategy.

  .clean
    - Cleans the database according to the configured strategy.

  .db = db_connection_or_symbol
    - Sets the Sequel database connection object or symbol (e.g., :default).
    - Can be specified with a specific database key: DatabaseCleaner[:sequel, db: :my_db_key]
```

--------------------------------

### Database Cleaner Sequel Adapter Configuration

Source: https://github.com/databasecleaner/database_cleaner-sequel/blob/main/README.md

Configure the Sequel adapter for Database Cleaner to use a specific Sequel database connection or the default one.

```ruby
# Sequel connection object
DatabaseCleaner[:sequel].db = Sequel.connect(uri)

# Back to default:
DatabaseCleaner[:sequel].db = :default

# Multiple Sequel databases can be specified:
DatabaseCleaner[:sequel, db: :default]
DatabaseCleaner[:sequel, db: Sequel.connect(uri)]
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.