多言語化の基盤作り (#55) (#421)

Reviewed-on: #421
Co-authored-by: miteruzo <miteruzo@naver.com>

backend/spec/support/test_records.rb

@@ -1,4 +1,8 @@
 module TestRecords
+  def primary_tag_name_for(tag, language_code)
+    TagName.find_by!(tag_id: tag.id, language_code:, primary_flg: true)
+  end
+
   def create_member_user!
     User.create!(name: 'spec user',
                  inheritance_code: SecureRandom.hex(16),