sqlite:
  :adapter: sqlite
  :dbfile: ':memory:'
  
sqlite3:
  :adapter: sqlite3
  :dbfile: ':memory:'

mysql:
  :adapter: mysql
  :database: test
  :user: root
  :password:
  :encoding: utf8

postgresql:
  :adapter: postgresql
  :database: test
  :user: root
  :encoding: UNICODE