silverstripe-framework/tests/control/CMSProfileControllerTest.yml

'SilverStripe\Security\Permission':
  admin:
    Code: ADMIN
  cmsmain:
    Code: CMS_ACCESS_LeftAndMain
  leftandmain:
    Code: CMS_ACCESS_CMSMain
  test:
    Code: CMS_ACCESS_TestController

'SilverStripe\Security\Group':
  admins:
    Title: Administrators
    Permissions: '=>SilverStripe\Security\Permission.admin'
  cmsusers:
    Title: CMS Users
    Permissions: '=>SilverStripe\Security\Permission.cmsmain, =>SilverStripe\Security\Permission.leftandmain'
  test:
    Title: Test group
    Permissions: '=>SilverStripe\Security\Permission.test'

'SilverStripe\Security\Member':
  admin:
    FirstName: Admin
    Email: admin@user.com
    Groups: '=>SilverStripe\Security\Group.admins'
  user1:
    FirstName: Joe
    Email: user1@user.com
    Groups: '=>SilverStripe\Security\Group.cmsusers'
  user2:
    FirstName: Steve
    Email: user2@user.com
    Groups: '=>SilverStripe\Security\Group.cmsusers'
  user3:
    FirstName: Files
    Email: user3@example.com
    Groups: '=>SilverStripe\Security\Group.test'