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