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Erik JohnstonandClaude Opus 4.8 fc2ad71d2e Add integration tests for the Rust Postgres backend
Add the end-to-end test suite for the Rust DBAPI2 backend, driving the real
tokio-postgres client against a live Postgres server. It is skipped unless
the suite is configured for Postgres (SYNAPSE_POSTGRES), the same switch the
rest of the suite uses.

These cover the behaviours that need a real server rather than the
in-memory fakes the Rust unit tests use: connect (good and bad DSN),
run_interaction (return value, arg/kwarg forwarding, commit on success,
rollback on a Python exception, and recovery after both a Python-raised and
a server-rejected statement, including a constraint violation), cursor
reuse across queries, the fetch_one/fetch_all/fetch_next_batch/rowcount
surface (including batching across a 1000-row result set and the
exhausted-vs-no-active-query error distinction), and value round-trips for
every supported type (NULL, bytea with NUL/high bytes, float4 lossiness,
and an out-of-range int bound to a real int4 column).

A separately-guarded case exercises the libpq default-host fixup by
connecting with a DSN that omits the host.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-06 09:45:16 +00:00
..
2026-06-02 11:05:38 +01:00