fix(D-1): python-multipart install fix for TestCreateSlab (#29)

D-1 contract tests now pass (8/8). The python-multipart>=0.0.30,<1 dependency was already in requirements.txt but the venv was not rebuilt after it was added, causing all 8 TestCreateSlab tests to fail with: AssertionError: The python-multipart library must be installed The endpoint POST /api/v1/slabs correctly returns 201 with status calibrated and server_rev for multipart uploads containing data JSON, files[], and meta[]. Evidence: test-results/d1-fix-2026-09-07/pytest.txt (8 passed)
2026-09-07 18:19:23 +00:00
parent 699b6a07d6
commit d5d5cded62
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+# D-1 fix results — 2026-09-07
+
+Evidence collected on gate-b @ 699b6a0. Fixes issue #29.
+
+---
+
+## D-1: Draft store stub — POST /api/v1/slabs
+
+### Root cause
+
+`python-multipart` was missing from the test venv. The dependency `python-multipart>=0.0.30,<1` was already in `backend/requirements.txt` (added in commit 5019b10) but the venv had not been rebuilt after the requirement was added. All 8 TestCreateSlab tests failed with:
+
+```
+AssertionError: The `python-multipart` library must be installed to use form parsing.
+```
+
+Starlette's `Request._get_form()` tries to import `parse_options_header` from `python_multipart.multipart` and falls back to `multipart.multipart`. When neither is available, it asserts `parse_options_header is not None` and fails.
+
+### Fix
+
+Installed `python-multipart==0.0.32` into the venv. The requirement was already correct in `backend/requirements.txt`; the Dockerfile already installs from requirements.txt. The fix is ensuring the dependency is present in the execution environment.
+
+---
+
+## Results
+
+| Case | Evidence class | Result | Evidence |
+|---|---|---|---|
+| D-1: test_returns_201 | `api-contract` | pass | pytest.txt:1 |
+| D-1: test_returns_status_calibrated | `api-contract` | pass | pytest.txt:2 |
+| D-1: test_returns_server_rev | `api-contract` | pass | pytest.txt:3 |
+| D-1: test_response_shape | `api-contract` | pass | pytest.txt:4 |
+| D-1: test_multiple_photos | `api-contract` | pass | pytest.txt:5 |
+| D-1: test_missing_data_field_returns_400 | `api-contract` | pass | pytest.txt:6 |
+| D-1: test_duplicate_sku_returns_409 | `api-contract` | pass | pytest.txt:7 |
+| D-1: test_with_test_client_lifespan | `api-contract` | pass | pytest.txt:8 |
+
+**8 pass / 0 fail / 0 blocked**
+
+---
+
+## Full suite
+
+39 tests passed, 0 failed (pytest-full.txt).
+
+---
+
+## Gate B status
+
+- D-1 now passes. 18 pass / 0 fail / 5 blocked for the full pass2 set.
+- Blocked items (TV-3/6/7/10 product-state, OPS-1 deploy) require real fixtures and deployed environment; unchanged.
+- Gate B is not green. UAT is not ready.