test-driver/crystallized/test_grant_access.py
tegwick eee7722714 T09: crystallization
A stable agentic realization becomes deterministic code. All four exit
criteria met; 163 tests pass.

- crystallization.py: trajectory capture, stability assessment requiring the
  same path across several runs, CrystallizedDriver, pytest codegen
- crystallized/test_grant_access.py: generated, runs with no model, carries
  its lineage in the docstring
- descendant preserves the ancestor's oracle set, agrees with it across five
  lab versions, and still catches a seeded defect
- reversibility shown both ways via new M24 (grant endpoint renamed): the
  frozen descendant fails loudly rather than searching, and the agentic
  ancestor recovers from the same mutation

F-0007 (open): the 54% cost reduction must not be quoted in support of the
thesis. The T07 runtime is token-free, so the measured saving is one page
fetch, one parse and a two-candidate scoring pass. The saving the concept
actually claims - tokens, latency, retry variance - is unmeasured. Together
with F-0005 this makes a bounded live-model experiment the highest-value next
investment.

Assertions in the generated test are imported rather than restated, so it is
not fully standalone. Deliberate: paraphrased claims would be a second
unverified statement of intent.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 1629012@bnt-lap001
Assistant-Session: 78d4fb13-8a1e-474b-87a3-9b9261c49a39
2026-08-23 00:21:48 +02:00

73 lines
2.6 KiB
Python

"""Crystallized regression test — generated, do not edit by hand.
Lineage
-------
ancestor asset : va-grant-via-browser
ancestor maturity: T1
descendant : va-grant-crystallized (T5 Deterministic)
frozen from : 4 identical realizations
surface version: lab-0.2.0-baseline
generated : 2026-08-22
Why this file exists
--------------------
An agent discovered this path 4 times running and it did not change. The
search is now waste, so it has been frozen. **No model is involved in running
this test.**
The realization below is plain HTTP with no framework dependency. The assertions
are imported from the originating use case rather than restated — a generated
test that paraphrases its assertions creates a second, unverified statement of
intent, and drift between the two would be silent. See F-0007 for what that
costs.
If this test starts failing, the correct first response is **not** to update the
selectors. Re-run the agentic ancestor: if it recovers, the surface moved and
this file should be regenerated; if it does not, the behaviour changed and that
is a finding.
"""
from __future__ import annotations
import urllib.error
import urllib.parse
import urllib.request
from scenarios.alice_bob_carol import _bob_can_read, _bob_cannot_write, _carol_cannot_read
TARGET = '/resources/R/grant'
FIELDS = {'permission': 'READ', 'subject_id': 'bob'}
def _post(base_url: str, token: str, path: str, fields: dict) -> int:
request = urllib.request.Request(
urllib.parse.urljoin(base_url, path),
data=urllib.parse.urlencode(fields).encode(),
method="POST",
headers={
"Authorization": f"Bearer {token}",
"Content-Type": "application/x-www-form-urlencoded",
},
)
try:
with urllib.request.urlopen(request, timeout=10) as response:
return response.status
except urllib.error.HTTPError as error:
return error.code
def realize(base_url: str, token: str) -> int:
"""Perform grant_access deterministically, exactly as the agent learned to."""
return _post(base_url, token, TARGET, FIELDS)
def test_grant_access(crystallized_world):
"""grant_access still works, and the claims it protects still hold."""
base_url, token, observe = crystallized_world
assert realize(base_url, token) < 400, "the frozen realization no longer works"
snapshot = observe()
assert _bob_can_read(snapshot), 'Bob can read R after the grant'
assert _carol_cannot_read(snapshot), 'Carol can never read R'
assert _bob_cannot_write(snapshot), 'A READ grant does not let Bob write R'