The cron subsystem is the system responsible of running background task
at regular interval, it runs in multiple dedicated threads or workers
that are independent of the regular HTTP threads/workers.
There was a major overhaul of the system in v15 (4b28f1162a) to
introduce cron triggers, a way to run a task at a given moment in
addition to the regular configured interval. Although the cron system
was not extensively tested before that v15 refactor, no new test were
introduced with that refactor leaving the system mostly untested.
Since then we had to fix multiple subtle concurrency bugs such as
b940d1c25f and c06cee44fe. Due to the lack of an existing test suite,
no regression tests were added next to those fixes.
With this commit we introduce the missing cron test suite. The test
suite is separated in two different test cases:
- A standard pre-install TransactionCase to test everything that can be
tested with a single cursor. This case can be run the usual way with
`--test-tags :TestIrCron`.
- A non-standard post-install **database breaking** test case to run
concurrency tests that often require multiple SQL transactions. This
case requires the special `--test-tags database_breaking` to be
executed. You MUST backup your current database before running that
test or you'll loose data.
closesodoo/odoo#97087
Signed-off-by: Julien Castiaux <juc@odoo.com>
Julien Castiaux
2755af8fac