402 lines
12 KiB
Python
402 lines
12 KiB
Python
"""Legacy migration tests.
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Tests the idempotent, interruption-safe import of history.jsonl into the
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observation store.
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"""
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import json
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from datetime import datetime, timezone
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from pathlib import Path
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from typing import Any, Dict
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import pytest
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# Add src to path for imports
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import sys
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sys.path.insert(0, str(Path(__file__).parent.parent / "src"))
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from fenris.legacy import import_legacy_history, _parse_history_line
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from fenris.store import init_store
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# Fixtures
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@pytest.fixture
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def history_fixture() -> str:
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"""Minimal history.jsonl content with two samples."""
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samples = [
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{
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"timestamp": "2026-08-30T10:00:00Z",
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"device": "/dev/nvme0",
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"model": "Samsung SSD 970 EVO Plus 1TB",
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"serial": "S4EWNX0N123456",
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"firmware_version": "2B2QEXM7",
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"capacity_bytes": 1024000000000,
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"data_units_written": 1000000,
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"data_units_read": 500000,
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"percentage_used": 5,
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"power_on_hours": 8765,
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"temperature": 35,
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"available_spare": 100,
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"media_errors": 0,
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"power_cycles": 1234,
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"unsafe_shutdowns": 5,
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"critical_warning": 0,
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},
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{
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"timestamp": "2026-08-30T11:00:00Z",
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"device": "/dev/nvme0",
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"model": "Samsung SSD 970 EVO Plus 1TB",
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"serial": "S4EWNX0N123456",
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"firmware_version": "2B2QEXM7",
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"capacity_bytes": 1024000000000,
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"data_units_written": 1001000,
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"data_units_read": 501000,
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"percentage_used": 5,
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"power_on_hours": 8766,
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"temperature": 36,
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"available_spare": 100,
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"media_errors": 0,
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"power_cycles": 1234,
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"unsafe_shutdowns": 5,
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"critical_warning": 0,
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},
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]
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return "\n".join(json.dumps(s) for s in samples)
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@pytest.fixture
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def hourly_fixture() -> str:
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"""Minimal hourly.jsonl content for diffing."""
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hours = [
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{
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"hour": "2026-08-30T10:00:00Z",
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"bytes_written_delta": 512000000,
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"bytes_read_delta": 256000000,
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"sample_count": 1,
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},
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{
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"hour": "2026-08-30T11:00:00Z",
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"bytes_written_delta": 513000000,
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"bytes_read_delta": 257000000,
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"sample_count": 1,
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},
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]
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return "\n".join(json.dumps(h) for h in hours)
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@pytest.fixture
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def config_fixture(tmp_path: Path) -> Dict[str, Any]:
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"""Configuration fixture."""
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return {
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"device": "/dev/nvme0",
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"store_path": str(tmp_path / "observations.db"),
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"data_dir": str(tmp_path),
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}
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@pytest.fixture
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def clock_fixture():
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"""Injected clock returning fixed time."""
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class FakeClock:
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def __init__(self):
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self.now = datetime(2026, 9, 1, 12, 0, 0, tzinfo=timezone.utc)
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def utcnow(self):
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return self.now
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return FakeClock()
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# Test: Idempotency - second run no-ops
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def test_import_idempotent(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given a store with legacy import marker,
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when import is called again,
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then it no-ops."""
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# Create history file
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# First import
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result1 = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result1["ok"] is True
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assert result1["skipped"] is False
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# Second import (should no-op)
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history_path2 = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path2.write_text(history_fixture)
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result2 = import_legacy_history(conn, history_path2, clock=clock_fixture)
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assert result2["ok"] is True
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assert result2["skipped"] is True
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conn.close()
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# Test: Interruption safety - single transaction
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def test_import_single_transaction(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl,
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when import runs,
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then the entire import is a single transaction."""
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# Create history file
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result["ok"] is True
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# Verify all data was imported atomically
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cursor = conn.execute("SELECT COUNT(*) FROM samples")
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assert cursor.fetchone()[0] == 2
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cursor = conn.execute("SELECT COUNT(*) FROM hour_observations")
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assert cursor.fetchone()[0] == 2
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cursor = conn.execute("SELECT COUNT(*) FROM monitoring_periods")
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assert cursor.fetchone()[0] == 1
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conn.close()
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# Test: Legacy files renamed to *.migrated after commit
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def test_legacy_files_renamed(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl and hourly.jsonl,
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when import commits,
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then files are renamed to *.migrated."""
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# Create files
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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hourly_path = Path(config_fixture["data_dir"]) / "hourly.jsonl"
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hourly_path.write_text("{}")
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, hourly_path=hourly_path, clock=clock_fixture)
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assert result["ok"] is True
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# Verify files renamed
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assert not history_path.exists()
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assert history_path.with_suffix(history_path.suffix + ".migrated").exists()
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assert not hourly_path.exists()
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assert hourly_path.with_suffix(hourly_path.suffix + ".migrated").exists()
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conn.close()
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# Test: Malformed lines quarantined with logged count
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def test_malformed_lines_quarantined(
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl with malformed lines,
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when import runs,
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then malformed lines are quarantined with logged count."""
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# Create history with malformed lines
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history_content = "\n".join([
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'{"timestamp": "2026-08-30T10:00:00Z", "model": "Test", "serial": "123", "firmware_version": "1.0", "data_units_written": 1000, "data_units_read": 500, "percentage_used": 5, "power_on_hours": 100, "temperature": 35}',
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'NOT JSON',
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'{"timestamp": "2026-08-30T11:00:00Z", "model": "Test", "serial": "123", "firmware_version": "1.0", "data_units_written": 1001, "data_units_read": 501, "percentage_used": 5, "power_on_hours": 101, "temperature": 36}',
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])
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_content)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result["ok"] is True
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assert result["malformed_lines"] == 1
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assert result["samples_imported"] == 2
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conn.close()
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# Test: hourly.jsonl diffed and logged but never trusted
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def test_hourly_jsonl_diffed(
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history_fixture: str,
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hourly_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl and hourly.jsonl with mismatches,
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when import runs,
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then mismatches are diffed and logged."""
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# Create files
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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hourly_path = Path(config_fixture["data_dir"]) / "hourly.jsonl"
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hourly_path.write_text(hourly_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import (should not fail even with mismatches)
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result = import_legacy_history(conn, history_path, hourly_path=hourly_path, clock=clock_fixture)
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assert result["ok"] is True
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# Verify data was imported from history.jsonl, not hourly.jsonl
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cursor = conn.execute("SELECT bytes_written_delta FROM hour_observations ORDER BY hour")
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deltas = [row[0] for row in cursor.fetchall()]
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# Should match history.jsonl derived values, not hourly.jsonl
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assert len(deltas) == 2
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conn.close()
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# Test: Legacy identity is mn-only
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def test_legacy_identity_mn_only(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl,
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when import runs,
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then legacy segment has mn-only identity."""
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# Create history file
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result["ok"] is True
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assert result["legacy_identity_key"] == "legacy|Samsung SSD 970 EVO Plus 1TB"
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# Verify segment has mn-only identity
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cursor = conn.execute("SELECT identity_key, mn, sn, subnqn FROM controller_segments")
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row = cursor.fetchone()
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assert row[0] == "legacy|Samsung SSD 970 EVO Plus 1TB"
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assert row[1] == "Samsung SSD 970 EVO Plus 1TB"
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assert row[2] is None # sn is None for legacy
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assert row[3] is None # subnqn is None for legacy
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conn.close()
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# Test: No synthetic baseline created
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def test_no_synthetic_baseline(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl,
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when import runs,
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then no endurance baseline is created."""
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# Create history file
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result["ok"] is True
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# Verify no baseline created
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cursor = conn.execute("SELECT COUNT(*) FROM endurance_baseline")
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assert cursor.fetchone()[0] == 0
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conn.close()
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# Test: Monitoring period opened and closed
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def test_monitoring_period_opened_closed(
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history_fixture: str,
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config_fixture: Dict[str, Any],
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clock_fixture,
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):
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"""Given history.jsonl,
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when import runs,
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then one monitoring period is opened at first sample and closed at migration."""
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# Create history file
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history_path = Path(config_fixture["data_dir"]) / "history.jsonl"
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history_path.write_text(history_fixture)
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# Initialize store
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store_path = Path(config_fixture["store_path"])
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conn = init_store(store_path)
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# Import
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result = import_legacy_history(conn, history_path, clock=clock_fixture)
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assert result["ok"] is True
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# Verify monitoring period
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cursor = conn.execute("SELECT started_at, ended_at, end_cause FROM monitoring_periods")
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row = cursor.fetchone()
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assert row[0] == "2026-08-30T10:00:00+00:00" # First sample time
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assert row[1] == clock_fixture.now.isoformat() # Migration time
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assert row[2] == "migrated"
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conn.close()
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# Test: Parse history line
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def test_parse_history_line_valid():
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"""Given a valid history line,
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when parsed,
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then returns the record."""
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line = '{"timestamp": "2026-08-30T10:00:00Z", "model": "Test", "serial": "123", "firmware_version": "1.0", "data_units_written": 1000, "data_units_read": 500, "percentage_used": 5, "power_on_hours": 100, "temperature": 35}'
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result = _parse_history_line(line, 1)
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assert result is not None
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assert result["model"] == "Test"
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def test_parse_history_line_malformed():
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"""Given a malformed JSON line,
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when parsed,
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then returns None."""
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result = _parse_history_line("NOT JSON", 1)
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assert result is None
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def test_parse_history_line_missing_field():
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"""Given a line with missing required field,
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when parsed,
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then returns None."""
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line = '{"timestamp": "2026-08-30T10:00:00Z", "model": "Test"}'
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result = _parse_history_line(line, 1)
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assert result is None
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