tegwick
a2cb673e0a
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Use-case regression gate / usecase-regressions (push) Failing after 6m5s
Assistant: codex Assistant-Model: gpt-6.1-sol Assistant-Session: 01a11538-05ea-7b63-b3c7-a2df5f38898d
227 lines
9 KiB
Python
227 lines
9 KiB
Python
"""Coherent backup publication needs version-pinned readback, never PUT alone."""
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import fcntl
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import hashlib
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import importlib.util
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import json
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import tarfile
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from datetime import UTC, datetime, timedelta
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from pathlib import Path
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import pytest
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@pytest.fixture
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def backup():
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path = Path(__file__).resolve().parents[1] / "scripts/paired-backup.py"
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spec = importlib.util.spec_from_file_location("csoc_paired_backup", path)
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module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(module)
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return module
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NOW = datetime(2026, 10, 11, 3, 15, tzinfo=UTC)
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KEY = (
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"platform-pg/application-archives/coulomb-social/2026/10/11/20261011T031500Z-"
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+ "a" * 24
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+ ".tar.age"
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)
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def pair(directory):
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directory.mkdir(mode=0o700)
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receipt = {
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"status": "captured",
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"writers_quiesced": True,
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"app_resumed": True,
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"database": "coulomb_social_db",
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"image": "synthetic@sha256:fixture",
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"started_at": NOW.isoformat(),
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"elapsed_seconds": 45,
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}
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for name, key, data in [
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("database.dump", "database", b"PGDMPsynthetic"),
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("content.tar.gz", "content", b"synthetic-content"),
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]:
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(directory / name).write_bytes(data)
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(directory / name).chmod(0o600)
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receipt[key + "_bytes"] = len(data)
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receipt[key + "_sha256"] = hashlib.sha256(data).hexdigest()
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(directory / "receipt.json").write_text(json.dumps(receipt))
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(directory / "receipt.json").chmod(0o600)
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return receipt
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def setup(backup, monkeypatch, tmp_path, failure=None):
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state = tmp_path / "state"
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calls, publications = [], []
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def command(argv, **kwargs):
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calls.append(argv)
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if "--execute" in argv:
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if failure == "capture":
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raise backup.Refused("capture_failed")
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pair(Path(argv[-1]))
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else:
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assert argv[:3] == ["age", "-r", "age1-public-test-key"]
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with tarfile.open(argv[-1]) as bundle:
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assert set(bundle.getnames()) == {"database.dump", "content.tar.gz", "receipt.json"}
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assert bundle.extractfile("database.dump").read() == b"PGDMPsynthetic"
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if failure == "encrypt":
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raise backup.Refused("encryption_failed")
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Path(argv[4]).write_bytes(b"age-encryption.org/v1\nsynthetic-ciphertext")
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def publish(encrypted, fetched, transfer_receipt, captured_at, tool, python):
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assert encrypted.stat().st_mode & 0o777 == 0o600
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publications.append(encrypted.read_bytes())
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if failure == "upload":
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raise backup.Refused("upload_failed")
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fetched.write_bytes(encrypted.read_bytes())
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fetched.chmod(0o600)
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return {
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"object_key": KEY,
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"destination": "s3://synthetic/" + KEY,
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"version_id": "version-1",
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}
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monkeypatch.setattr(backup, "command", command)
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monkeypatch.setattr(backup, "publish", publish)
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return state, calls, publications
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def test_success_keeps_one_fetched_pair_and_records_no_application_restore(
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backup, monkeypatch, tmp_path
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):
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state, calls, publications = setup(backup, monkeypatch, tmp_path)
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receipt = backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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assert receipt["status"] == "offsite_fetched_verified"
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assert receipt["remote_retrieval_verified"]
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assert not receipt["application_restore_verified"]
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assert receipt["version_id"] == "version-1"
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assert len(publications) == 1 and len(calls) == 2
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assert not list(state.glob("pending-*"))
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assert not list(state.rglob("database.dump"))
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assert state.stat().st_mode & 0o777 == 0o700
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assert (state / "last-success.json").stat().st_mode & 0o777 == 0o600
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assert json.loads((state / "inventory.json").read_text()) == [receipt]
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assert backup.check_freshness(state, NOW + timedelta(hours=25))["status"] == "fresh"
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with pytest.raises(backup.Refused, match="backup_stale"):
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backup.check_freshness(state, NOW + timedelta(hours=27))
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(state / receipt["local_archive"]).write_bytes(b"corrupt")
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with pytest.raises(backup.Refused, match="local_encrypted_hash_mismatch"):
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backup.check_freshness(state, NOW)
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@pytest.mark.parametrize("failure", ["capture", "encrypt", "upload"])
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def test_failures_keep_private_evidence_and_block_further_capture(
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backup, monkeypatch, tmp_path, failure
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):
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state, _, _ = setup(backup, monkeypatch, tmp_path, failure)
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with pytest.raises(backup.Refused):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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assert not (state / "last-success.json").exists()
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assert not (state / "inventory.json").exists()
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pending = list(state.glob("pending-*"))
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assert len(pending) == 1 and pending[0].stat().st_mode & 0o777 == 0o700
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with pytest.raises(backup.Refused, match="pending_backup_requires_review"):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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assert len(list(state.glob("pending-*"))) == 1
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def test_live_lock_and_nonprivate_state_refuse_before_capture(backup, monkeypatch, tmp_path):
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state, calls, _ = setup(backup, monkeypatch, tmp_path)
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state.mkdir(mode=0o700)
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with (state / "backup.lock").open("w") as lock:
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fcntl.flock(lock, fcntl.LOCK_EX | fcntl.LOCK_NB)
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with pytest.raises(backup.Refused, match="backup_already_running"):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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state.chmod(0o755)
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with pytest.raises(backup.Refused, match="state_directory_not_private"):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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assert calls == []
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def test_pair_hashes_and_app_resume_required(backup, tmp_path):
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directory = tmp_path / "pair"
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receipt = pair(directory)
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assert backup.validate_pair(directory) == receipt
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(directory / "database.dump").write_bytes(b"corrupt")
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with pytest.raises(backup.Refused, match="pair_hash_mismatch"):
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backup.validate_pair(directory)
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receipt["app_resumed"] = False
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(directory / "receipt.json").write_text(json.dumps(receipt))
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with pytest.raises(backup.Refused, match="pair_incomplete"):
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backup.validate_pair(directory)
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def test_pending_retry_reuses_ciphertext_without_recapture_or_reencrypt(
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backup, monkeypatch, tmp_path
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):
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state, _, publications = setup(backup, monkeypatch, tmp_path, "upload")
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with pytest.raises(backup.Refused):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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ciphertext = publications[0]
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_, calls, publications = setup(backup, monkeypatch, tmp_path)
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receipt = backup.run_backup(
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state,
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tmp_path / "primary.py",
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"age1-public-test-key",
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NOW + timedelta(hours=1),
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resume=True,
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)
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assert calls == [] and publications == [ciphertext]
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assert receipt["captured_at"] == NOW.isoformat()
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assert not list(state.glob("pending-*"))
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def test_pending_ciphertext_tamper_refuses_before_publication(backup, monkeypatch, tmp_path):
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state, _, _ = setup(backup, monkeypatch, tmp_path, "upload")
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with pytest.raises(backup.Refused):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW)
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next(state.glob("pending-*/packet.tar.age")).write_bytes(b"tampered")
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_, calls, publications = setup(backup, monkeypatch, tmp_path)
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with pytest.raises(backup.Refused, match="sealed_packet_binding_mismatch"):
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backup.run_backup(state, tmp_path / "primary.py", "age1-public-test-key", NOW, resume=True)
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assert calls == [] and publications == []
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@pytest.mark.parametrize(
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"invalid", ["hash", "version", "retrieval", "immutable", "capture", "ciphertext"]
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)
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def test_publication_requires_complete_bound_readback_receipt(
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backup, monkeypatch, tmp_path, invalid
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):
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encrypted, fetched, receipt_path = [
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tmp_path / name for name in ["a.age", "readback.age", "receipt.json"]
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]
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encrypted.write_bytes(b"synthetic ciphertext")
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receipt = {
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"status": "offsite_fetched_verified",
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"application": "coulomb-social",
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"captured_at": NOW.isoformat(),
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"remote_retrieval_verified": True,
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"immutable_create": True,
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"version_id": "version-1",
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"ciphertext_sha256": backup.digest(encrypted),
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"ciphertext_bytes": encrypted.stat().st_size,
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}
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changes = {
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"hash": ("ciphertext_sha256", "bad"),
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"version": ("version_id", "null"),
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"retrieval": ("remote_retrieval_verified", False),
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"immutable": ("immutable_create", False),
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"capture": ("captured_at", "other"),
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}
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if invalid in changes:
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key, value = changes[invalid]
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receipt[key] = value
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def command(argv, **kwargs):
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fetched.write_bytes(b"corrupted" if invalid == "ciphertext" else encrypted.read_bytes())
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receipt_path.write_text(json.dumps(receipt))
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monkeypatch.setattr(backup, "command", command)
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with pytest.raises(backup.Refused, match="primary_receipt_not_verified"):
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backup.publish(
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encrypted, fetched, receipt_path, NOW.isoformat(), Path("tool"), Path("python")
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)
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