RSpec.shared_context 'Ainu locale contract' do
  let(:ainu_locale) { instance_double(Locale, language_code: 'ain', script_code: 'Jpan') }

  before do
    # Only the foreign-key reference is seeded; no Locale or enum is enabled.
    Language.connection.execute(<<~SQL)
      INSERT IGNORE INTO languages (code, name, created_at)
      VALUES ('ain', 'Ainu', CURRENT_TIMESTAMP)
    SQL
    allow(Locale).to receive(:find_by).and_call_original
    allow(Locale).to receive(:find_by).with(code: 'ain').and_return(ainu_locale)
  end

  def add_ainu_name tag, name
    TagName.insert_all!([{
        tag_id: tag.id, language_code: 'ain', script_code: 'Jpan', name:,
        primary_flg: true, auto_generated: false,
        created_at: Time.current, updated_at: Time.current }])
    tag.tag_names.reset
    TagName.find_by!(tag_id: tag.id, language_code: 'ain', name:)
  end
end