Fix https://github.com/chatmail/core/issues/8195
Supersedes https://github.com/chatmail/core/pull/8217
The most interesting change is in `delete_expired_imap_messages()`
because there, messages are marked for deletion on single-device
chatmail profiles.
The logic in `delete_expired_imap_messages()` was wrong before, and
pre-messages were not deleted at all. This is fixed by also querying
`pre_rfc724_mid` in addition to `rfc724_mid` from the `msgs` table.
In order not to make the SQL statement too complex, I split it into two.
WRT tests:
- `test_immediate_autodelete()` tests the auto-deletion;
`test_imap_autodelete_fully_downloaded_msg()` tests that even for a
message that is split into pre- and post-message, both messages are
deleted.
- A lot of tests test that if bcc_self is on, messages are not
auto-deleted. E.g. `test_one_account_send_bcc_setting()` and
`test_markseen_message_and_mdn()` relies on the fact that messages stay
on the server when bcc_self is on.
- Unfortunately, it is not possible to test that messages are only
deleted for chatmail servers, because we don't have any tests that use a
non-chatmail server.
Messages are iterated over in fetch_new_msg_batch()
and largest_uid_fetched variable is updated there
assuming that messages come in the order of increasing UID.
If UIDs are not increasing, it is possible
that largest_uid_fetched will be updated
even though smaller UID is not fetched yet
and the message will be lost.
INTERNALDATE sorting was introduced to
deal with email providers such as Gmail
that keep INTERNALDATE but not the UID
order when moving the messages.
Since we don't move the messages anymore
after commit 04c0e7da16,
there is no need for ordering by INTERNALDATE.
Existing test relies on folder scanning.
We are going to remove the option to not show emails
(<https://github.com/chatmail/core/issues/7631>)
so the test will be removed eventually anyway.
Created new test_folders.py
Moved existing JSON-RPC tests:
- test_reactions_for_a_reordering_move
- test_delete_deltachat_folder
Ported tests:
- test_move_works_on_self_sent
- test_moved_markseen
- test_markseen_message_and_mdn
- test_mvbox_thread_and_trash (renamed to test_mvbox_and_trash)
- test_scan_folders
- test_move_works
- test_move_avoids_loop
- test_immediate_autodelete
- test_trash_multiple_messages
The change also contains fixes for direct_imap fixture
needed to use IMAP IDLE in JSON-RPC tests.
