Update the soft-fail tests to work with recent room versions #1149
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Rather than manually building the (event_id, event_hash) prev_event structures, use `$room->make_event_refs` to do this, which means it will also work on later room verions. This means we need access to the events themselves rather than just the IDs, so needs a bit of tweaking for that.
When we create an event with prev_events which put that event on a historical branch, we also need to use the auth_events corresponding to that point on the DAG. Otherwise, the server can end up pulling in the state from the main branch anyway, and rejecting, rather than soft-failing, the relevant events. (Exactly whether the state gets pulled in from the auth_events depends on the state resolution algorithm in use, hence on the room version).
clokep
approved these changes
Oct 6, 2021
No more so than much of the rest of Sytest, I'd say. We have the |
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We have some tests in
tests/50federation/52soft-fail.plwhich test soft-failing, but which have never been updated to work with room versions other than v1.For the most part, this is just a matter of updating them to use utility functions instead of making assumptions about the shapes of the events, but it turns out that there is another wrinkle, which is that they were making some assumptions about the state-resolution algorithm which are not true in subsequent room versions. More info in the commit comments.
Reviewable commit-by-commit.