Fix two more test bugs surfaced by the full integration run

1. test_ingestion_cache_invalidation.py: the job was created through
   the test's db_session fixture, whose commit() only ends a savepoint
   that gets rolled back at teardown (see tests/conftest.py) -- it's
   never a real commit. _run_ingestion looks the job up through its
   own session_scope() (a genuinely separate connection), which could
   never see it, so the very first _require_job call raised "job
   vanished mid-run" every time. Worse, test_failed_ingestion_does_not_
   invalidate_the_cache still passed, coincidentally -- it expected a
   RuntimeError and got one, just the wrong one, masking the bug.
   Fixed by having _make_job create the job through session_scope()
   itself, matching test_ingestion_retry.py's existing pattern.

2. Same class of bug as the video-collision fix in the last commit:
   FAKE_MOVIE's fixed imdb_id ("tt0133093"), not just its video, also
   collides across two different fake movies sharing it unmodified --
   uq_external_id_source is a real unique constraint on
   (provider_id, entity_type, external_id). Fixed by also overriding
   imdb_id on the second movie in both affected tests.

All caught by running the actual integration suite against Postgres --
these paths were previously only collect-only'd locally (no local DB).

Co-Authored-By: Claude Sonnet 5 <[email protected]>

tests/integration/test_collection_ingestion.py

@@ -57,9 +57,10 @@ async def test_ingest_collection_only_links_already_ingested_movies(db_session:
     already knows about, in release-date order, never fabricate a stub for
     the other two (section 15)."""
 
-    # 604's videos overridden to empty: FAKE_MOVIE's embedded video has a
-    # fixed provider_video_id, and two different movies both ingesting it
-    # would collide on the real uq_video_provider_source unique constraint.
+    # 604's videos and imdb_id overridden: FAKE_MOVIE's embedded video and
+    # imdb_id are both fixed identifiers, and two different movies both
+    # ingesting them unmodified would collide on the real
+    # uq_video_provider_source / uq_external_id_source unique constraints.
     provider = FakeTMDbCollectionProvider(
         movie_payloads={
             "603": {**FAKE_MOVIE, "id": 603, "title": "The Matrix"},
@@ -68,6 +69,7 @@ async def test_ingest_collection_only_links_already_ingested_movies(db_session:
                 "id": 604,
                 "title": "The Matrix Reloaded",
                 "videos": {"results": []},
+                "imdb_id": "tt0234215",
             },
         },
         collection_payload=FAKE_COLLECTION,

tests/integration/test_ingestion_cache_invalidation.py

@@ -14,13 +14,21 @@ import uuid
 import pytest
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from app.core.database import session_scope
 from app.core.ids import aurora_id
 from app.repositories.provider_repository import create_ingestion_job, get_or_create_provider
 from app.services.cache import build_key
 from app.services.ingestion import runner
 
 
-async def _make_job(session: AsyncSession, *, attempts_already_used: int = 0) -> uuid.UUID:
+async def _make_job(*, attempts_already_used: int = 0) -> uuid.UUID:
+    # _run_ingestion looks the job up through its own session_scope() (a
+    # separate connection from the test's db_session fixture, which only
+    # fakes commits inside a savepoint that's rolled back at teardown --
+    # see tests/conftest.py). Creating the job through session_scope() too
+    # (matching test_ingestion_retry.py) makes it a real, visible commit
+    # instead of one only db_session's own connection can see.
+    async with session_scope() as session:
         provider = await get_or_create_provider(session, "tmdb", "TMDB")
         job = await create_ingestion_job(
             session,
@@ -39,8 +47,10 @@ async def _make_job(session: AsyncSession, *, attempts_already_used: int = 0) ->
 async def test_successful_ingestion_invalidates_the_entity_cache_key(
     db_session: AsyncSession, monkeypatch
 ):
-    job_id = await _make_job(db_session)
-    await db_session.commit()
+    # db_session is unused directly (see _make_job's docstring-comment) but
+    # kept as a fixture dependency so this test skips cleanly when Postgres
+    # isn't reachable, matching test_ingestion_retry.py's pattern.
+    job_id = await _make_job()
 
     result_id = uuid.uuid4()
     deleted_keys: list[str] = []
@@ -66,8 +76,7 @@ async def test_successful_ingestion_invalidates_the_entity_cache_key(
 async def test_ingestion_without_cache_entity_type_does_not_touch_the_cache(
     db_session: AsyncSession, monkeypatch
 ):
-    job_id = await _make_job(db_session)
-    await db_session.commit()
+    job_id = await _make_job()
 
     async def fake_work(session, provider):
         return uuid.uuid4()
@@ -92,8 +101,7 @@ async def test_failed_ingestion_does_not_invalidate_the_cache(
     # attempts_already_used=4 (default max_attempts is 5) so this failure is
     # terminal and raises the original error rather than arq.Retry -- either
     # way the cache must not be touched, but this keeps the assertion simple.
-    job_id = await _make_job(db_session, attempts_already_used=4)
-    await db_session.commit()
+    job_id = await _make_job(attempts_already_used=4)
 
     async def failing_work(session, provider):
         raise RuntimeError("simulated failure")

tests/integration/test_movie_ingestion.py

@@ -188,16 +188,17 @@ async def test_movie_recommendations_only_include_already_ingested_movies(
     external id (section 15: never fabricate a stub for an unseen entity),
     and GET .../recommendations must return them in TMDb's ranked order."""
 
-    # videos overridden to empty: FAKE_MOVIE's embedded video has a fixed
-    # provider_video_id, and two different movies both ingesting it would
-    # collide on the real uq_video_provider_source unique constraint --
-    # a video id is only ever attached to one entity, unlike genres/companies
-    # which are legitimately shared.
+    # videos and imdb_id overridden: FAKE_MOVIE's embedded video and imdb_id
+    # are both fixed identifiers, and two different movies both ingesting
+    # them unmodified would collide on the real uq_video_provider_source /
+    # uq_external_id_source unique constraints -- each belongs to exactly
+    # one entity, unlike genres/companies which are legitimately shared.
     sequel_payload = {
         **FAKE_MOVIE,
         "id": 604,
         "title": "The Matrix Reloaded",
         "videos": {"results": []},
+        "imdb_id": "tt0234215",
     }
     await ingest_movie(db_session, FakeTMDbProvider(sequel_payload), "604")
     await db_session.flush()