NUnit's default ParallelScope is Self (serial). With ~736 tests each
constructing its own SVSimTestFactory (full ASP.NET host + SQLite :memory:
+ ReferenceDataImporter seeding 7270 rows from CSVs), the suite was
running ~2m13s serial. ParallelScope.Fixtures drops it to ~1m46s — a
~20% wall-clock reduction with zero new failures.
Stayed at Fixtures rather than All because ParallelScope.All exposes
the process-static BattlePassRepository._curveCache (and likely other
similar caches) to races inside heavy-globals fixtures (LoadController,
PackControllerFullCatalog, StoryService — all consistent failures
under All, flaky 3-7 fails across runs). Within-fixture parallelism
is blocked on cleaning those up first.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
d093d872ae