Pre-loaded fixtures wiped-out by test run

[Alex Dilley]

If you preload your test database with all fixture data via the rake task:

bin/rails db:fixtures:load

And set self.pre_loaded_fixtures to true:

class ActiveSupport::TestCase

  self.pre_loaded_fixtures = true

  self.use_transactional_tests = true # the default

  fixtures :all

end

Would you expect the fixtures to be deleted and reinserted on every test run (caused by ActiveRecord::FixtureSet.create_fixtures – the same code exercised by the rake task)? Given the documentation on Transactional Tests, I'd imagine this to be unexpected behaviour but, regardless of options configured, fixture data is always reinstalled by the fixtures :all call.