tenant-engine/tests/test_lifecycle_store_conformance.py
tegwick 672cf4da6e
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Implement TEN-WP-0011 security layer conformance
Engine/PIP declaration is now checkable (layer.yaml plus a Tooling-client
scan). Writes persist a decision record or the published fail-closed
stance, live-lookup freshness is published, events_for is tenant-scoped,
and mutation evidence drains to audit-core from a local outbox without
blocking the mutation.

Sender registration is requested as AUDIT-IN-0002. Boundary-contract
amendment is requested as NET-IN-0002.

Assistant: grok
Assistant-Session: 01a04cea-e5e8-7081-a0fc-808ebbc35fa9
2026-08-29 13:02:51 +02:00

315 lines
11 KiB
Python

"""TEN-WP-0005-T02/T04: one lifecycle contract, every store backend.
Every test here is parametrised over the in-memory, SQLite, and PostgreSQL stores so the
durable backend cannot silently diverge from the reference semantics -- the
divergence that matters (CAS, idempotency, retirement guards) is exactly the
kind a single-backend suite would miss.
"""
from datetime import UTC, datetime
import pytest
from postgres_backend import clean_postgres_store
from tenant_engine.domain import (
CapabilityRole,
InvalidLifecycleTransitionError,
PlanAssignment,
Tenant,
TenantLifecycle,
TenantRetiredError,
create_role_grant,
)
from tenant_engine.sqlite_store import SQLiteTenantStore
from tenant_engine.store import (
IdempotencyConflictError,
InMemoryTenantStore,
TenantNotFoundError,
VersionConflictError,
)
NOW = datetime(2026, 8, 10, 12, 0, tzinfo=UTC)
@pytest.fixture(params=["memory", "sqlite", "postgres"])
def store(request, tmp_path):
if request.param == "memory":
return InMemoryTenantStore()
if request.param == "sqlite":
return SQLiteTenantStore(str(tmp_path / "tenant.db"))
return clean_postgres_store(tmp_path)
@pytest.fixture
def tenant(store) -> Tenant:
record = Tenant.create(
tenant_id="t-1", identifier="tenant:friendly:binky", display_name="Binky", created_at=NOW
)
store.create_tenant(record)
return record
def _retire(store, *, key: str = "idem-retire", version: int = 1):
return store.mutate_tenant(
tenant_id="t-1",
expected_version=version,
mutate=lambda t: t.retire(at=NOW),
event_type="tenant_retired",
evidence={"actor": "ops", "reason": "offboarded", "correlation_id": "corr-1"},
idempotency_key=key,
request_fingerprint="fp-retire",
)
def _rename(store, *, key: str, version: int, name: str = "Binky Ltd", fingerprint: str = "fp-a"):
return store.mutate_tenant(
tenant_id="t-1",
expected_version=version,
mutate=lambda t: t.with_metadata({"display_name": name}, at=NOW),
event_type="tenant_updated",
evidence={"actor": "ops", "reason": "rename", "correlation_id": "corr-1"},
idempotency_key=key,
request_fingerprint=fingerprint,
)
def test_update_persists_and_bumps_version(store, tenant) -> None:
updated, replayed = _rename(store, key="k1", version=1)
assert replayed is False
assert updated.version == 2
assert store.get_tenant("t-1").display_name == "Binky Ltd"
def test_grouping_mutation_persists(store, tenant) -> None:
updated, replayed = store.mutate_tenant(
tenant_id="t-1",
expected_version=1,
mutate=lambda current: current.with_grouping("large", at=NOW),
event_type="tenant_grouping_changed",
evidence={"actor": "ops", "reason": "growth", "correlation_id": "corr-grouping"},
idempotency_key="grouping-large",
request_fingerprint="fp-grouping-large",
)
assert replayed is False
assert updated.grouping == "large"
assert store.get_tenant("t-1").grouping == "large"
def test_stale_version_is_rejected(store, tenant) -> None:
_rename(store, key="k1", version=1)
with pytest.raises(VersionConflictError) as exc:
_rename(store, key="k2", version=1, name="Binky GmbH")
assert exc.value.actual == 2
assert store.get_tenant("t-1").display_name == "Binky Ltd"
def test_duplicate_idempotency_key_replays_the_original_result(store, tenant) -> None:
first, _ = _rename(store, key="k1", version=1)
replay, replayed = _rename(store, key="k1", version=1)
assert replayed is True
assert replay == first
# The replay must not apply the mutation a second time.
assert store.get_tenant("t-1").version == 2
def test_conflicting_idempotency_key_reuse_is_rejected(store, tenant) -> None:
_rename(store, key="k1", version=1, fingerprint="fp-a")
with pytest.raises(IdempotencyConflictError):
_rename(store, key="k1", version=1, name="Something Else", fingerprint="fp-b")
def test_mutating_an_unknown_tenant_raises(store) -> None:
with pytest.raises(TenantNotFoundError):
_rename(store, key="k1", version=1)
def test_retire_then_reactivate_round_trip(store, tenant) -> None:
retired, _ = _retire(store)
assert retired.lifecycle is TenantLifecycle.RETIRED
assert store.get_tenant("t-1").lifecycle is TenantLifecycle.RETIRED
reactivated, _ = store.mutate_tenant(
tenant_id="t-1",
expected_version=2,
mutate=lambda t: t.reactivate(at=NOW),
event_type="tenant_reactivated",
evidence={"actor": "ops", "reason": "returned", "correlation_id": "corr-2"},
idempotency_key="idem-reactivate",
request_fingerprint="fp-reactivate",
)
assert reactivated.lifecycle is TenantLifecycle.ACTIVE
assert store.get_tenant("t-1").version == 3
def test_double_retirement_with_a_new_key_is_an_invalid_transition(store, tenant) -> None:
_retire(store)
with pytest.raises(InvalidLifecycleTransitionError):
_retire(store, key="idem-retire-2", version=2)
def test_failed_mutation_leaves_no_version_bump_and_no_receipt(store, tenant) -> None:
with pytest.raises(InvalidLifecycleTransitionError):
store.mutate_tenant(
tenant_id="t-1",
expected_version=1,
mutate=lambda t: t.reactivate(at=NOW), # already active
event_type="tenant_reactivated",
evidence={"actor": "ops", "reason": "x", "correlation_id": "c"},
idempotency_key="k-fail",
request_fingerprint="fp",
)
assert store.get_tenant("t-1").version == 1
# The failed key must be reusable -- a rolled-back attempt is not a receipt.
updated, replayed = _rename(store, key="k-fail", version=1)
assert replayed is False
assert updated.version == 2
def test_retired_tenant_refuses_new_grants_and_plan_changes(store, tenant) -> None:
_retire(store)
grant = create_role_grant(
tenant=tenant,
grant_id="g-1",
role=CapabilityRole.CUS,
grant_reason="manual_grant",
plan_id=None,
granted_by="ops",
correlation_id="corr-1",
granted_at=NOW,
)
with pytest.raises(TenantRetiredError):
store.grant_role(grant)
with pytest.raises(TenantRetiredError):
store.assign_plan(PlanAssignment(tenant_id="t-1", plan_id="plan-x", assigned_at=NOW))
def test_retirement_preserves_existing_grant_and_plan_history(store, tenant) -> None:
store.grant_role(
create_role_grant(
tenant=tenant,
grant_id="g-1",
role=CapabilityRole.CUS,
grant_reason="manual_grant",
plan_id=None,
granted_by="ops",
correlation_id="corr-1",
granted_at=NOW,
)
)
store.assign_plan(PlanAssignment(tenant_id="t-1", plan_id="plan-x", assigned_at=NOW))
_retire(store)
# Retirement is not a revocation: history stays queryable for audit and
# so reactivation does not have to reconstruct anything.
assert store.active_roles("t-1") == frozenset({CapabilityRole.CUS})
assert any(event.event_type == "plan_assigned" for event in store.events_for(tenant.tenant_id))
def test_mutation_emits_a_correlated_audit_event(store, tenant) -> None:
_rename(store, key="k1", version=1)
event = [e for e in store.events_for(tenant.tenant_id) if e.event_type == "tenant_updated"][-1]
assert event.payload["actor"] == "ops"
assert event.payload["reason"] == "rename"
assert event.payload["correlation_id"] == "corr-1"
assert event.payload["version"] == 2
def test_lifecycle_survives_reopening_the_database(tmp_path) -> None:
path = str(tmp_path / "tenant.db")
store = SQLiteTenantStore(path)
store.create_tenant(
Tenant.create(tenant_id="t-1", identifier="tenant:friendly:binky", created_at=NOW)
)
_retire(store)
reopened = SQLiteTenantStore(path)
assert reopened.get_tenant("t-1").lifecycle is TenantLifecycle.RETIRED
assert reopened.get_tenant("t-1").version == 2
# Restart-safe idempotency: the receipt outlives the process.
replay, replayed = _retire(reopened, version=1)
assert replayed is True
assert replay.version == 2
def test_migration_defaults_pre_lifecycle_rows_to_active(tmp_path) -> None:
"""A database written by the pre-TEN-WP-0005 schema must open and read."""
import sqlite3
path = str(tmp_path / "legacy.db")
legacy = sqlite3.connect(path)
with legacy:
legacy.executescript("""
CREATE TABLE tenants (
tenant_id TEXT PRIMARY KEY, identifier TEXT UNIQUE NOT NULL, grouping_name TEXT
);
CREATE TABLE grants (
grant_id TEXT PRIMARY KEY, tenant_id TEXT NOT NULL, role TEXT NOT NULL,
grant_reason TEXT NOT NULL, plan_id TEXT, granted_by TEXT NOT NULL,
granted_at TEXT NOT NULL, correlation_id TEXT NOT NULL, revoked_at TEXT
);
CREATE TABLE plans (
tenant_id TEXT PRIMARY KEY, plan_id TEXT NOT NULL, assigned_at TEXT NOT NULL
);
CREATE TABLE events (
seq INTEGER PRIMARY KEY AUTOINCREMENT, event_type TEXT NOT NULL,
tenant_id TEXT NOT NULL, at TEXT NOT NULL, payload TEXT NOT NULL
);
INSERT INTO tenants VALUES ('t-legacy', 'tenant:friendly:legacy', 'friendly');
INSERT INTO grants VALUES ('g-legacy', 't-legacy', 'CUS', 'manual_grant', NULL,
'ops', '2026-08-01T00:00:00+00:00', 'corr-legacy', NULL);
INSERT INTO plans VALUES ('t-legacy', 'plan-legacy', '2026-08-01T00:00:00+00:00');
""")
legacy.close()
migrated = SQLiteTenantStore(path)
tenant = migrated.get_tenant("t-legacy")
assert tenant.lifecycle is TenantLifecycle.ACTIVE
assert tenant.version == 1
assert tenant.identifier == "tenant:friendly:legacy"
assert migrated.active_roles("t-legacy") == frozenset({CapabilityRole.CUS})
# And the migrated row is immediately mutable under the new contract.
updated, _ = migrated.mutate_tenant(
tenant_id="t-legacy",
expected_version=1,
mutate=lambda t: t.with_metadata({"display_name": "Legacy"}, at=NOW),
event_type="tenant_updated",
evidence={"actor": "ops", "reason": "backfill", "correlation_id": "c"},
idempotency_key="k",
request_fingerprint="fp",
)
assert updated.version == 2
def test_concurrent_writers_only_one_wins(tmp_path) -> None:
from concurrent.futures import ThreadPoolExecutor
store = SQLiteTenantStore(str(tmp_path / "tenant.db"))
store.create_tenant(
Tenant.create(tenant_id="t-1", identifier="tenant:friendly:binky", created_at=NOW)
)
def attempt(n: int):
try:
return _rename(store, key=f"k{n}", version=1, name=f"Name {n}", fingerprint=f"fp{n}")[0]
except VersionConflictError:
return None
with ThreadPoolExecutor(max_workers=8) as pool:
results = list(pool.map(attempt, range(8)))
winners = [r for r in results if r is not None]
assert len(winners) == 1
assert store.get_tenant("t-1").version == 2