Why after_commit not running even with use_transactional_fixtures = false - ruby-on-rails-3

Question

Transactional fixtures in rspec prevent after_commit from being called, but even when I disable them with
RSpec.configure do |config|
config.use_transactional_fixtures = false
end
The after_commit callback does not run.
Here is a rails app with the latest rspec / rails that I have produced the issue on:
git://github.com/sheabarton/after_commit_demo.git

Answer 1

One way around this is to trigger the commit callbacks manually. Example:
describe SomeModel do
subject { ... }
context 'after_commit' do
after { subject.run_callbacks(:commit) }
it 'does something' do
subject.should_receive(:some_message)
end
end
end
A little late, but hope this helps others.

Answer 2

In my case I resolved such problem with database_cleaner's settings placed below:
config.use_transactional_fixtures = false
config.before(:suite) do
DatabaseCleaner.strategy = :deletion
DatabaseCleaner.clean_with(:truncation)
end
config.before(:each) do
DatabaseCleaner.start
end
config.after(:each) do
DatabaseCleaner.clean
end
Thanks to Testing after_commit/after_transaction with Rspec

Answer 3

This is similar to #jamesdevar's answer above, but I couldn't add a code block, so I have to make a separate entry.
You don't have the change the strategy for the whole spec suite. You can keep using :transaction globally then just use :deletion or :truncation (they both work) as needed. Just add a flag to the relevant spec.
config.use_transactional_fixtures = false
config.before(:suite) do
# The :transaction strategy prevents :after_commit hooks from running
DatabaseCleaner.strategy = :transaction
DatabaseCleaner.clean_with(:truncation)
end
config.before(:each, :with_after_commit => true) do
DatabaseCleaner.strategy = :truncation
end
then, in your specs:
describe "some test requiring after_commit hooks", :with_after_commit => true do

Answer 4

If you're using database_cleaner you'll still run into this. I'm using the test_after_commit gem, and that seems to do the trick for me.

Answer 5

This Gist helped me.
It monkey-patches ActiveRecord to fire after_commit callbacks even if using transactional fixtures.
module ActiveRecord
module ConnectionAdapters
module DatabaseStatements
#
# Run the normal transaction method; when it's done, check to see if there
# is exactly one open transaction. If so, that's the transactional
# fixtures transaction; from the model's standpoint, the completed
# transaction is the real deal. Send commit callbacks to models.
#
# If the transaction block raises a Rollback, we need to know, so we don't
# call the commit hooks. Other exceptions don't need to be explicitly
# accounted for since they will raise uncaught through this method and
# prevent the code after the hook from running.
#
def transaction_with_transactional_fixtures(options = {}, &block)
rolled_back = false
transaction_without_transactional_fixtures do
begin
yield
rescue ActiveRecord::Rollback => e
rolled_back = true
raise e
end
end
if !rolled_back && open_transactions == 1
commit_transaction_records(false)
end
end
alias_method_chain :transaction, :transactional_fixtures
#
# The #_current_transaction_records is an stack of arrays, each one
# containing the records associated with the corresponding transaction
# in the transaction stack. This is used by the
# `rollback_transaction_records` method (to only send a rollback hook to
# models attached to the transaction being rolled back) but is usually
# ignored by the `commit_transaction_records` method. Here we
# monkey-patch it to temporarily replace the array with only the records
# for the top-of-stack transaction, so the real
# `commit_transaction_records` method only sends callbacks to those.
#
def commit_transaction_records_with_transactional_fixtures(commit = true)
unless commit
real_current_transaction_records = #_current_transaction_records
#_current_transaction_records = #_current_transaction_records.pop
end
begin
commit_transaction_records_without_transactional_fixtures
rescue # works better with that :)
ensure
unless commit
#_current_transaction_records = real_current_transaction_records
end
end
end
alias_method_chain :commit_transaction_records, :transactional_fixtures
end
end
end
Put this a new file in your Rails.root/spec/support directory, e.g. spec/support/after_commit_with_transactional_fixtures.rb.
Rails 3 will automatically load it in the test environment.