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app-catalog-felhom.eu/scripts/test_ladder_writer.py
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gates / gates (push) Successful in 1s
test record: an image move must carry its proof (09 decision 13, part 4)
update_ladder: in .felhom.yml, one JSON entry per line (spiked live on
controller v0.266.0 and v0.267.0 first). Two gates: check-test-record.py
(static, CI too) and check-test-record-move.py (history + registry for
moved refs only). 16 decoys, 3 red-proofs. The ONLY writer is
upgrade-test.py --write-ladder (bench AND box proven, digests resolved).
Harness v3: box fixtures on the bench, files_may_change.
Backfill: the 21 moves of 2026-09-22, 21 proven from their records.
No image: line moved.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
2026-09-23 20:52:32 +02:00

104 lines
4.3 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""test_ladder_writer.py — the ONLY ladder writer (`upgrade-test.py --write-ladder`) writes what the
gate accepts, and refuses what it must. No network (the digest resolver is replaced), no Docker.
python3 scripts/test_ladder_writer.py
"""
import importlib.util
import io
import json
import os
import shutil
import sys
import tempfile
import unittest
from contextlib import redirect_stdout
HERE = os.path.dirname(os.path.abspath(__file__))
ROOT = os.path.dirname(HERE)
sys.path.insert(0, HERE)
import image_digest # noqa: E402
import ladder # noqa: E402
spec = importlib.util.spec_from_file_location("upgrade_test_mod", os.path.join(HERE, "upgrade-test.py"))
ut = importlib.util.module_from_spec(spec)
spec.loader.exec_module(ut)
D = "sha256:" + "c" * 64
def bench(verdict="proven", peak=0.41, marks=(), frm="0.64.0", to="0.64.1"):
return {"harness_version": 3, "app": "navidrome", "verdict": verdict,
"from": {"navidrome": "deluan/navidrome:" + frm}, "to": {"navidrome": "deluan/navidrome:" + to},
"measured_at": "2026-09-23T22:00:00Z", "marks": list(marks),
"memory": {"containers": {"navidrome": {"peak_pct": peak}}}}
class WriterTest(unittest.TestCase):
def setUp(self):
self.tmp = tempfile.mkdtemp(prefix="ladder-writer-")
shutil.copytree(os.path.join(ROOT, "templates", "navidrome"),
os.path.join(self.tmp, "templates", "navidrome"))
self.fy = os.path.join(self.tmp, "templates", "navidrome", ".felhom.yml")
# start from a template WITHOUT a ladder, at 0.64.0 (the live pin tonight)
text = open(self.fy).read()
if "update_ladder:" in text:
text = text[:text.index("\n# update_ladder")] + "\n"
open(self.fy, "w").write(text)
self._orig = image_digest.resolve
image_digest.resolve = lambda ref: (D, None)
def tearDown(self):
image_digest.resolve = self._orig
shutil.rmtree(self.tmp, ignore_errors=True)
def run_writer(self, b, box_verdict="proven"):
bp, xp = os.path.join(self.tmp, "b.json"), os.path.join(self.tmp, "x.json")
json.dump(b, open(bp, "w"))
json.dump({"verdict": box_verdict, "to": b["to"]}, open(xp, "w"))
buf = io.StringIO()
with redirect_stdout(buf):
rc = ut.write_ladder([bp, "--box", xp, "--catalog", self.tmp, "--evidence", "ev/x/"])
return rc, buf.getvalue()
def test_writes_what_the_gate_accepts(self):
rc, out = self.run_writer(bench())
self.assertEqual(rc, 0, out)
entries, _, errs = ladder.parse(open(self.fy).read())
self.assertEqual(errs, [])
self.assertEqual(entries[-1]["to"], {"navidrome": "deluan/navidrome:0.64.1"})
self.assertEqual(entries[-1]["memory_peak_pct"], 41.0) # a PERCENT, from the watch's fraction
self.assertEqual(entries[-1]["digest"], {"navidrome": D})
comp = open(os.path.join(self.tmp, "templates", "navidrome", "docker-compose.yml")).read()
self.assertEqual(ladder.images_in(comp), {"navidrome": "deluan/navidrome:0.64.1"})
import subprocess
r = subprocess.run([sys.executable, os.path.join(HERE, "check-test-record.py"), "--root", self.tmp,
"navidrome"], capture_output=True, text=True)
self.assertEqual(r.returncode, 0, r.stdout)
def test_refuses_a_failed_bench(self):
rc, out = self.run_writer(bench(verdict="failed"))
self.assertEqual(rc, 1)
self.assertNotIn("update_ladder:", open(self.fy).read())
def test_refuses_a_failed_box(self):
rc, out = self.run_writer(bench(), box_verdict="inconclusive")
self.assertEqual(rc, 1)
self.assertNotIn("update_ladder:", open(self.fy).read())
def test_refuses_when_the_template_is_not_at_from(self):
rc, out = self.run_writer(bench(frm="0.63.2"))
self.assertEqual(rc, 1)
self.assertIn("the template is at", out)
def test_marks_follow_the_measurement(self):
rc, out = self.run_writer(bench(peak=0.86, marks=["memory_tight", "files_may_change"]))
self.assertEqual(rc, 0, out)
e = ladder.parse(open(self.fy).read())[0][-1]
self.assertEqual(e["marks"], {"files_may_change": True, "needs_person": None, "memory_tight": True})
if __name__ == "__main__":
unittest.main(verbosity=2)