testing AR rollback inside methods

test.log

[6] pry(main)> def test_inner
[6] pry(main)*   puts 'i0'
[6] pry(main)*   raise ActiveRecord::Rollback
[6] pry(main)*   puts 'i1'
[6] pry(main)*   return false
[6] pry(main)*   puts 'i2'
[6] pry(main)* end
=> :test_inner
[7] pry(main)>
[8] pry(main)> def test_outer
[8] pry(main)*   puts 'o0'
[8] pry(main)*   ActiveRecord::Base.transaction do
[8] pry(main)*     puts 'o1'
[8] pry(main)*     User.create(email:'[email protected]')
[8] pry(main)*     puts 'o2'
[8] pry(main)*     test_inner
[8] pry(main)*     puts 'o3'
[8] pry(main)*     return false
[8] pry(main)*     puts 'o4'
[8] pry(main)*   end
[8] pry(main)*   puts 'o5'
[8] pry(main)* end
=> :test_outer
[9] pry(main)> xx = test_outer
o0
   (0.2ms)  BEGIN
o1
  User Exists (0.4ms)  SELECT  1 AS one FROM "users" WHERE ("users"."email" = '[email protected]') LIMIT 1
  SQL (1.6ms)  INSERT INTO "users" ("email", "created_at", "updated_at") VALUES ($1, $2, $3) RETURNING "id"  [["email", "[email protected]"], ["created_at", "2015-08-09 19:59:07.625768"], ["updated_at", "2015-08-09 19:59:07.625768"]]
o2
i0
   (0.2ms)  ROLLBACK
o5
=> nil
[10] pry(main)> User.count
   (0.5ms)  SELECT COUNT(*) FROM "users"
=> 0
[11] pry(main)> xx
=> nil

result: rollback works; methods return nil