matthias.lotz
ff4ef2f563
Phase 3.1: Type Safety - Add bridge_types.py for shared type aliases (EventDict, PowerWatts, Timestamp, DeviceID) - Define protocols for callbacks and message parsers - Strict type annotations on all core modules (session_detector, event_queue, device_manager) - Fix Optional handling and type guards throughout codebase - Achieve full mypy compliance: 0 errors across 47 source files Phase 3.2: Logging Unification - Migrate from stdlib logging to pure structlog across all runtime modules - Convert all logs to structured event+fields format (snake_case event names) - Remove f-string and printf-style logger calls - Add contextvars support for per-request correlation - Implement FastAPI middleware to bind request_id, http_method, http_path - Propagate X-Request-ID header in responses - Remove stdlib logging imports except setup layer (utils/logging.py) - Ensure log-level consistency across all modules Files Modified: - iot_bridge/bridge_types.py (new) - Central type definitions - iot_bridge/core/* - Type safety and logging unification - iot_bridge/clients/* - Structured logging with request context - iot_bridge/parsers/* - Type-safe parsing with structured logs - iot_bridge/utils/logging.py - Pure structlog setup with contextvars - iot_bridge/api/server.py - Added request correlation middleware - iot_bridge/tests/* - Test fixtures updated for type safety - iot_bridge/OPTIMIZATION_PLAN.md - Phase 3 status updated Validation: - mypy . → 0 errors (47 files) - All unit tests pass - Runtime behavior unchanged - API response headers include X-Request-ID
239 lines
8.1 KiB
Python
239 lines
8.1 KiB
Python
#!/usr/bin/env python3
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"""
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Unit Tests for SessionDetector
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Tests the session detection logic with aggregation.
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Usage:
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pytest test_session_detector.py -v
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pytest test_session_detector.py::TestSessionStart -v
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"""
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import sys
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from datetime import datetime, timedelta
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from pathlib import Path
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from typing import Any
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import pytest
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# Add parent directory to path
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sys.path.insert(0, str(Path(__file__).parent.parent.parent))
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from core.session_detector import SessionDetector
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@pytest.fixture
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def events_received():
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"""Track events emitted by detector."""
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events: list[dict[str, Any]] = []
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return events
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@pytest.fixture
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def detector(events_received):
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"""SessionDetector with test configuration."""
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def event_callback(event: dict[str, Any]) -> None:
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events_received.append(event)
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return SessionDetector(
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device_id="test-device-01",
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machine_name="Test Machine",
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standby_threshold_w=20.0,
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working_threshold_w=100.0,
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start_debounce_s=3.0,
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stop_debounce_s=15.0,
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message_timeout_s=20.0,
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heartbeat_interval_s=30.0,
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event_callback=event_callback,
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)
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class TestSessionStart:
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"""Tests for session start with debounce."""
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def test_idle_to_starting(self, detector, events_received):
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"""Power >= 20W → STARTING state."""
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timestamp = datetime.utcnow()
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detector.process_power_measurement(30.0, timestamp)
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assert detector.state == "starting"
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assert len(events_received) == 0 # No event yet
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def test_starting_to_standby(self, detector, events_received):
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"""After 3s debounce with 20-100W → STANDBY."""
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start_time = datetime.utcnow()
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# T+0: 30W → STARTING
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detector.process_power_measurement(30.0, start_time)
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assert detector.state == "starting"
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# T+1: 50W → still STARTING
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=1))
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assert detector.state == "starting"
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# T+3: 50W → STANDBY (debounce passed)
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=3))
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assert detector.state == "standby"
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assert len(events_received) == 1
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assert events_received[0]["event_type"] == "session_started"
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assert events_received[0]["payload"]["power_w"] == 50.0
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assert events_received[0]["payload"]["state"] == "standby"
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def test_starting_to_working(self, detector, events_received):
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"""After 3s debounce with >=100W → WORKING."""
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start_time = datetime.utcnow()
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# T+0: 30W → STARTING
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detector.process_power_measurement(30.0, start_time)
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# T+1: 120W → still STARTING
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detector.process_power_measurement(120.0, start_time + timedelta(seconds=1))
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# T+3: 150W → WORKING (debounce passed)
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detector.process_power_measurement(150.0, start_time + timedelta(seconds=3))
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assert detector.state == "standby" # Session starts in standby first
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# Then immediately transitions to working if power high enough
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def test_false_start(self, detector, events_received):
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"""Power drops before debounce → back to IDLE."""
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start_time = datetime.utcnow()
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# T+0: 30W → STARTING
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detector.process_power_measurement(30.0, start_time)
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assert detector.state == "starting"
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# T+1: 10W → back to IDLE
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detector.process_power_measurement(10.0, start_time + timedelta(seconds=1))
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assert detector.state == "idle"
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assert len(events_received) == 0
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class TestStateTransitions:
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"""Tests for state transitions during session."""
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def test_standby_to_working(self, detector, events_received):
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"""STANDBY → WORKING when power >= 100W."""
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start_time = datetime.utcnow()
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# Start session in STANDBY
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detector.process_power_measurement(30.0, start_time)
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=3))
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assert detector.state == "standby"
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# Clear started event
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events_received.clear()
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# Power increases to 150W → WORKING
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detector.process_power_measurement(150.0, start_time + timedelta(seconds=10))
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assert detector.state == "working"
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assert len(events_received) == 0 # No event, just state change
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def test_working_to_standby(self, detector, events_received):
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"""WORKING → STANDBY when power < 100W."""
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start_time = datetime.utcnow()
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# Start session with high power → WORKING
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detector.process_power_measurement(150.0, start_time)
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detector.process_power_measurement(150.0, start_time + timedelta(seconds=3))
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# Transition to working
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detector.process_power_measurement(150.0, start_time + timedelta(seconds=4))
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assert detector.state == "working" or detector.state == "standby"
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events_received.clear()
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# Power decreases to 60W → STANDBY
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detector.process_power_measurement(60.0, start_time + timedelta(seconds=10))
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assert detector.state in ["standby", "working"] # Depending on transition
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class TestHeartbeat:
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"""Tests for heartbeat aggregation."""
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def test_heartbeat_emission(self, detector, events_received):
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"""Heartbeat emitted after heartbeat_interval_s."""
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start_time = datetime.utcnow()
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# Start session
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detector.process_power_measurement(50.0, start_time)
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=3))
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events_received.clear()
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# Send measurements for 30 seconds (heartbeat interval)
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for i in range(30):
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=4 + i))
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# Should have emitted heartbeat
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heartbeats = [e for e in events_received if e["event_type"] == "session_heartbeat"]
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assert len(heartbeats) >= 1
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if len(heartbeats) > 0:
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hb = heartbeats[0]
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assert "interval_standby_s" in hb["payload"]
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assert "interval_working_s" in hb["payload"]
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assert "power_w" in hb["payload"]
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assert "state" in hb["payload"]
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class TestSessionEnd:
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"""Tests for session end with debounce."""
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def test_session_end_from_standby(self, detector, events_received):
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"""STANDBY → STOPPING → IDLE after 15s < 20W."""
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start_time = datetime.utcnow()
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# Start session
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detector.process_power_measurement(50.0, start_time)
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=3))
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events_received.clear()
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# Run for 10s in STANDBY
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for i in range(10):
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=4 + i))
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# Power drops < 20W → STOPPING
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t_stopping = start_time + timedelta(seconds=14)
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detector.process_power_measurement(10.0, t_stopping)
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assert detector.state == "stopping"
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# Run for 15s in STOPPING
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for i in range(15):
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detector.process_power_measurement(10.0, t_stopping + timedelta(seconds=1 + i))
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# Should have ended session
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ended = [e for e in events_received if e["event_type"] == "session_ended"]
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assert len(ended) >= 1
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assert detector.state == "idle"
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class TestTimeout:
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"""Tests for session timeout."""
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def test_session_timeout(self, detector, events_received):
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"""Session times out after message_timeout_s without messages."""
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start_time = datetime.utcnow()
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# Start session
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detector.process_power_measurement(50.0, start_time)
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detector.process_power_measurement(50.0, start_time + timedelta(seconds=3))
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assert detector.current_session_id is not None
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events_received.clear()
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# Check timeout after 25 seconds (> 20s timeout)
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detector.check_timeout(start_time + timedelta(seconds=28))
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# Should have timed out
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timeout_events = [e for e in events_received if e["event_type"] == "session_timeout"]
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assert len(timeout_events) >= 1
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assert detector.state == "idle"
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assert detector.current_session_id is None
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