All users of this function expect a nonempty list to be returned, otherwise they fail with hard to
understand errors like "No connection attempts were made", so it's better to fail early if DNS
resolution failed and the cache doesn't contain resolutions as well.
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.
It's used in `fetch_existing_msgs()`, but we can remove it and tell users that they need to
move/copy messages from Sentbox to Inbox so that Delta Chat adds all contacts from them. This way
users will be also informed that Delta Chat needs users to CC/BCC/To themselves to see messages sent
from other MUAs.
The motivation is to reduce code complexity, get rid of the extra IMAP connection and cases when
messages are added to chats by Inbox and Sentbox loops in parallel which leads to various message
sorting bugs, particularly to outgoing messages breaking sorting of incoming ones which are fetched
later, but may have a smaller "Date".
We do not try to delete resent messages
anymore. Previously resent messages
were distinguised by having duplicate Message-ID,
but future Date, but now we need to download
the message before we even see the Date.
We now move the message to the destination folder
but do not fetch it.
It may not be a good idea to delete
the duplicate in multi-device setups anyway,
because the device which has a message
may delete the duplicate of a message
the other device missed.
To avoid triggering IMAP busy move loop
described in the comments
we now only move the messages
from INBOX and Spam folders.
Create unprotected group in test_create_protected_grp_multidev
The test is renamed accordingly.
SystemMessage::ChatE2ee is added in encrypted groups
regardless of whether they are protected or not.
Previously new encrypted unprotected groups
had no message saying that messages are end-to-end encrypted
at all.
Actually this leads to fetching messages only from watched folders and Spam. Motivation:
- At least Gmail has virtual folders which aren't correctly detected as such, e.g. "Sent".
- At least Gmail has many virtual folders and scanning all of them takes significant time, 5-6 secs
in median for me. This slows down receiving new messages and consumes battery.
- Delta Chat shouldn't fetch messages from folders potentially created by other apps for their own
purposes. NB: All compatible Delta Chat forks should use the "DeltaChat" folder as mvbox.
- Fetching from folders that aren't watched, e.g. from "Sent", may lead to message ordering issues.
