docs(meta): add testing preferences to CLAUDE.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
2026-03-04 23:16:22 +01:00
co-authored by Claude Opus 4.6
parent f82f83ae0e
commit 1037ea2bf7
+7
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@@ -61,6 +61,13 @@ The ticketing database (`settledreach.db`) lives in the **parent directory** sha
| Doc search | `tooling/db/qdrant-search "query"` | `/docs-search` skill |
| Doc index | `tooling/db/qdrant-index path/to/file.md` | `/docs-search` skill |
### Testing preferences
- **Prefer live Gauntlet testing over mocks.** For visual tests and rendering verification, use the full client/server pipeline (`--test-mode` + `SR_LIVE=1`) instead of TestHarness mocks. The Gauntlet test world produces production-identical data. Mocks can mask rendering bugs by taking different code paths.
- **Gauntlet rooms are immutable.** Never modify existing rooms — new systems get new rooms. This ensures StableId determinism and fixture stability.
- Three test tiers: (1) Live server — highest fidelity, (2) MessagePack replay via `Protocol.decode_snapshot()` — for unreachable rooms, (3) TestHarness mock — for UI-only tests where fog data doesn't matter.
- `make fixtures-gauntlet` regenerates real server snapshot fixtures from the Gauntlet world.
### File conventions
- Decisions: domain files in `decisions/` (see `decisions/README.md` for index)
- Decision IDs: `D-NNN` (confirmed), `Q-NNN` (open questions), `R-NNN` (rejected)