1990982 - Add xpcshell tests for message filtering on EWS folders

Status: NEW

(MailNews Core :: Networking: Exchange, task)

Description

[Ben Campbell]

Actually, basic filter tests should work across EWS/IMAP/POP3/whatever, but the existing filter tests are a little IMAP-centric.
(and the EWS filtering operates on incoming messages after they've been added to the folder, unlike IMAP and POP3 which can apply filters before the message is added - way more complicated)

Off the top of my head, here are some things I'd like to test:

Check matching for:

• filter terms which operate solely on fields in nsIMsgDBHdr objects (recipients etc)
  • check with fields which can have multiple values (eg cc list)
• terms which require full message body
  • filtering is deferred until after the full message has been downloaded (could be any amount of time before that happens)
• terms which match headers which are not captured by nsIMsgDBHdr - such as List-ID:
  • as per nsIMsgDBHdr terms, filtering occurs during header parsing but relies on having the full, raw, header block passed into the filter code.

Check spam classification:

Check spam classification with server-side assistance (presumably standard systems like spamassassin don't work here, so does EWS provide spam hints in headers?)

For incoming-mail filters, check both before and after junk classification (it's a dropdown in the filter editor).

Check filter actions:

• set up cases for both header-only and full-body filters
• move message to other folder
  • on same server
  • to a local folder
• delete message
• tag message
• etc...

check that multiple filters and multiple actions trigger as expected:

• single filter with multiple actions (e.g. tag message then move to local folder)
• multiple matching filters (e.g. one filter which tags a message, and another which moves it to another folder).