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feat(equipment): register_fixture rejects orphan bound assets (INV-4)#44

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register-fixture-rejects-decommissioned
Jun 5, 2026
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feat(equipment): register_fixture rejects orphan bound assets (INV-4)#44
xmap merged 7 commits into
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register-fixture-rejects-decommissioned

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@xmap xmap commented Jun 5, 2026

Summary

  • Slice 3b in the Option A Fixture+Mount+Asset alignment sequence; 3a (Decommissioned guard) shipped via feat(equipment): register_fixture rejects Decommissioned bound assets #40
  • New FixtureAssetNotInstalledError -- every Asset in slot_asset_bindings must currently be installed in some Mount before register_fixture can materialize the composition
  • Decider guard ordering: existence -> Decommissioned (3a) -> orphan (3b) -> unknown-slot -> cardinality -> family-mismatch -> param-overrides

Why

  • INV-4 from the Fixture+Mount+Asset alignment plan: the contract becomes install_asset -> register_fixture, never the reverse
  • Without this guard, an operator could materialize a Fixture pointing at Assets that have no rack location, producing an unbacked composition silently

Notable shape

  • RegisterFixtureContext.mount_id_by_asset_id: dict[UUID, UUID | None] | None; whole-None short-circuits the guard for pool-less test paths (matches install_asset / decommission_asset precedent), per-entry None signals an orphan
  • Handler now schedules three concurrent I/O streams via asyncio.gather: assembly_state_task + per-Asset load_asset gather + new mount_ids_future over load_asset_location calls
  • New seed_installed_asset helper in tests/integration/_equipment_helpers.py; 5 integration files rippled to install-then-register

Test plan

  • 3 new decider unit tests (sorted-first orphan determinism, pool-None short-circuit, Decommissioned-fires-before-orphan ordering)
  • 1 new integration test asserting FixtureAssetNotInstalledError end-to-end against Postgres without install_asset
  • Pre-commit + arch fitness green locally
  • Gate-reviewed 4/5/5 prior to commit (DDD-fit concurrency should-fix folded in)

xmap and others added 5 commits June 5, 2026 10:47
Adds a single cross-aggregate guard: every Asset referenced by
`slot_asset_bindings` must NOT be Decommissioned. Mirrors the
sibling AssetCannotAttachToFixtureError precondition at attach-time
and rejects at register-time so the operator does not register a
Fixture that would inevitably fail later at attach_asset_to_fixture
(Fixture is single-event-genesis and cannot be amended).

- New FixtureAssetNotAttachableError carries the sorted-first
  offending asset_id and current lifecycle string, mirroring the
  FixtureAssetNotFoundError deterministic-error precedent in the
  same decider.
- RegisterFixtureContext gains a `lifecycle_by_asset_id` dict
  populated from the existing per-Asset load_asset gather (no extra
  round-trip, no new projection). Default empty dict means
  decider-only unit tests that exercise other invariants leave the
  guard inactive (mirrors family_ids_by_asset_id's relaxed default).
- Decider guard ordering: existence (FixtureAssetNotFoundError)
  -> NEW lifecycle (FixtureAssetNotAttachableError) -> unknown-slot
  -> cardinality -> family-mismatch -> param-overrides. Operator
  sees the most actionable error first.
- Route + OpenAPI 409 description list the new cause; routes.py
  wires the new error into the existing _handle_cannot_transition
  family alongside its Asset-BC mirror.

Zero existing tests break because every existing happy-path test
uses Active assets. Two new decider unit tests (guard fires with
sorted-first determinism + empty-dict short-circuit), plus one
integration test exercising the full handler stack end-to-end
against Postgres (register_asset -> decommission_asset ->
register_fixture -> FixtureAssetNotAttachableError).

Closes INV-5 from the Fixture+Mount+Asset alignment plan; first
half of Slice 3 (INV-4 orphan-binding guard deferred to Slice 3b
to keep this slice ripple-free). Slice 3a in the Option A sequence.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Adds the second cross-aggregate guard from Slice 3 (3a shipped the
Decommissioned-lifecycle half). Every Asset referenced by
`slot_asset_bindings` must currently be installed in some Mount;
operators that try to register a Fixture for un-racked assets are
rejected with `FixtureAssetNotInstalledError` instead of silently
materializing an unbacked composition. Closes INV-4 from the
Fixture+Mount+Asset alignment plan: the contract becomes
install_asset -> register_fixture, never the reverse.

- New FixtureAssetNotInstalledError carries the sorted-first orphan
  asset_id (matches sibling FixtureAssetNotFoundError /
  FixtureAssetNotAttachableError deterministic-error precedent).
- RegisterFixtureContext gains a `mount_id_by_asset_id` field shaped
  as `dict[UUID, UUID | None] | None`. Whole-None disables the
  guard for the pool-less test path (matches install_asset /
  decommission_asset short-circuit convention); per-entry None
  signals an orphan and fires the guard.
- Handler kicks off three concurrent I/O streams via asyncio: the
  existing `assembly_state_task` + per-Asset `load_asset` gather,
  plus a new `mount_ids_future` returned by `asyncio.gather` over
  `load_asset_location` calls. `asyncio.gather` already schedules
  its children concurrently, so storing the future (without await)
  is the canonical way to start a gather alongside other work.
- Decider guard ordering: existence -> NEW Decommissioned (3a) ->
  NEW orphan (3b) -> unknown-slot -> cardinality -> family-mismatch
  -> param-overrides. Decommissioned check fires before orphan when
  both apply (lifecycle is the more fundamental constraint).
- Route + OpenAPI 409 description list the new cause; routes.py
  wires the new error into _handle_cannot_transition.

Test ripple (5 integration files updated to install-then-register):
factored a shared `seed_installed_asset` helper into
`tests/integration/_equipment_helpers.py` that registers Frame +
Mount + Asset, activates and installs the Asset, drains projections,
and returns the ids. Each rippled test calls the helper before
register_fixture, so the outer FixedIdGenerator id pool only
budgets for the post-seed work. Asset version assertions bumped +1
to account for the AssetActivated event the helper emits.

Three new decider unit tests (orphan fires with sorted-first
determinism, pool-None short-circuit, ordering vs Decommissioned)
plus one new integration test that exercises the full handler
stack end-to-end against Postgres without installing the Asset
first and asserts FixtureAssetNotInstalledError fires.

Slice 3b in the Option A sequence; gate-reviewed 4/5/5 (DDD-fit
should-fix on concurrency folded in here).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…ction code

Adds a parametrized AST fitness test that scans every git-tracked
.py file for direct calls to `make_inmemory_kernel(...)` and asserts
each call site is either the definition module
`src/cora/infrastructure/deps.py` or under `tests/`.

`make_inmemory_kernel` builds a Kernel with `pool=None`. Three
cross-aggregate guards short-circuit on `pool=None` for the
pool-less test path: install_asset (since 5g), decommission_asset
(slice 1), register_fixture (slice 3a). If a future production
module accidentally wires the in-memory primitive (alternate
entrypoint, MCP-only deployment, lazy-pool refactor), every one of
those guards silently disables with zero test failure. This is the
"load-bearing assumption with no fitness" risk the slice 3a /
3b gate-review adversarial flagged, and the rule-of-three trigger
the `feedback_pool_none_short_circuit_rule_of_three.md` memo
captured.

Test shape mirrors `test_kernel_construction_single_site.py`:
textual `make_inmemory_kernel(` filter + AST `ast.Call` walk + a
`_PRODUCTION_ALLOWLIST` with one entry (deps.py) + a bulk allowance
for any path under `tests/` + a drift-catcher that the allowlist
file exists.

Mutation-checked: dropping a one-liner `make_inmemory_kernel(...)`
call site at `src/cora/_pool_none_regression.py` makes the test
fail at the exact line; removing it returns the suite to green.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…cts-decommissioned

# Conflicts:
#	apps/api/openapi.json
#	apps/api/src/cora/equipment/aggregates/assembly/state.py
#	apps/api/src/cora/equipment/features/register_fixture/context.py
#	apps/api/src/cora/equipment/features/register_fixture/decider.py
#	apps/api/src/cora/equipment/features/register_fixture/handler.py
#	apps/api/src/cora/equipment/features/register_fixture/route.py
#	apps/api/src/cora/equipment/routes.py
#	apps/api/tests/integration/test_register_fixture_handler_postgres.py
#	apps/api/tests/unit/equipment/test_register_fixture_decider.py
… determinism + audit-tag strip + docs)

Independent review of the INV-4 (orphan-bound-asset) guard surfaced
five should-fix findings across correctness, test coverage, naming
conventions, and docs. Four addressed here; the fifth (contract-tier
pool=None bypass) is closed by the sibling commit adding a
`make_inmemory_kernel` production-call-sites architecture fitness.

Concurrency (handler.py): the three I/O streams that load the
assembly, the per-Asset state, and per-Asset mount location used a
hand-rolled `asyncio.create_task` + bare `asyncio.gather` future with
sequential awaits. If any one of them raised, the others were never
awaited and continued running in the background, surfacing as
'task exception never retrieved' warnings and holding pool
connections after the handler had already returned an error.
Rewrapped in `asyncio.TaskGroup` so a failure in any child cancels
the siblings deterministically before the handler unwinds.

Sorted-first determinism (test_register_fixture_decider*.py): the
existing test for the orphan guard used a single asset_id, which made
sorting trivially identity-preserving. A regression from
`sorted(..., key=str)[0]` to `next(iter(...))` would have passed
silently. Added a deterministic two-line test with three concrete
UUIDs whose dict insertion order disagrees with their stringified
sort order, plus a Hypothesis property test parameterized over
frozenset[UUID] of 2-5 orphans that asserts the raised id equals
`sorted(orphan_ids, key=str)[0]` regardless of iteration order.

Naming hygiene (CLAUDE.md hard rule): stripped 14 occurrences of
the audit-plan tags 'INV-4' and 'slice 3b' from source and test
files. The durable WHY (cross-aggregate guard requiring referenced
Assets to be currently installed in some Mount) was already stated
alongside each tag, so the strip is mechanical and the prose
survives.

Module docs (docs/architecture/modules/equipment/index.md): the
RegisterFixture error taxonomy listed only the pre-existing causes;
both FixtureAssetNotAttachable (lifecycle guard, pre-existing miss
from slice 3a) and FixtureAssetNotInstalled (install-required guard
added by this slice) are now first-class entries. The
register_fixture invariants prose at the top of the doc also gained
the lifecycle + install preconditions that the decider now enforces.

Tests after fix: 21/21 register_fixture decider tests pass (incl. 1
new example + 1 new PBT); 1726 equipment unit + integration tests
pass; 16911 architecture fitnesses pass.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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github-actions Bot commented Jun 5, 2026

Coverage report

Click to see where and how coverage changed

FileStatementsMissingCoverageCoverage
(new stmts)
Lines missing
  apps/api/src/cora/equipment
  routes.py
  apps/api/src/cora/equipment/aggregates/assembly
  state.py
  apps/api/src/cora/equipment/features/register_fixture
  context.py
  decider.py
  handler.py
Project Total  

This report was generated by python-coverage-comment-action

xmap and others added 2 commits June 5, 2026 20:03
The three Fixture-PIDINST integration test files landed via PRs
#43 + #45 after this branch was created, so the install-then-register
choreography this branch enforces was not applied to their fixture
setups. Their tests register an Asset and then immediately call
register_fixture binding that Asset, which trips the new INV-4
orphan guard (FixtureAssetNotInstalledError) added in this branch.

Adds a sibling helper `install_existing_asset_into_fresh_mount` in
`tests/integration/_equipment_helpers.py` that activates an
already-registered Asset, registers a fresh Frame + Mount under
uuid4 ids, and installs the Asset. Use this when the test already
needed to register the Asset itself (to bind a model_id or seed an
owner) and now needs to satisfy INV-4 before calling
register_fixture. Companion to the existing seed_installed_asset
helper that handles the no-model / no-owner case from scratch.

Each of the three PIDINST test files calls the new helper right
after its register_asset step. Slot codes use the asset's uuid as a
suffix to keep them unique across helper calls within the same test
run.

All 10 PIDINST tests now pass locally. Pre-this-fix the CI run on
this branch was failing 6 of them with FixtureAssetNotInstalledError.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
…s for INV-4

Companion to 71bb940: two more Fixture-PIDINST integration test
files from PR #45 (Phase 2 write path) need the same install-before-
register treatment to satisfy the new INV-4 orphan guard.

- `test_get_fixture_pidinst_after_assign.py`: `_seed_asset_with_owner_and_model`
- `test_assign_fixture_persistent_id_tool.py`: inline asset setup in `_seed_fixture`

Both gain a call to `install_existing_asset_into_fresh_mount` right
after their `register_asset` step, slot_code suffixed with the
asset's uuid for in-test uniqueness.

All 21 PIDINST tests (5 files) now pass locally; previous CI run
on this branch failed 10 of the 11 from these two files.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
@xmap xmap merged commit b626ab2 into main Jun 5, 2026
4 checks passed
@xmap xmap deleted the register-fixture-rejects-decommissioned branch June 5, 2026 18:36
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