feat: device registry with CRUD, state tracking, command sending, and log management

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

tests/test_device_registry.py

@@ -0,0 +1,98 @@
+import pytest
+from mqtt_home.device_registry import (
+    create_device, get_device, list_devices, delete_device,
+    update_device, send_command, handle_state_update, get_device_logs,
+    get_dashboard_stats,
+)
+from mqtt_home.schemas import DeviceCreate, DeviceUpdate
+
+
+async def test_create_and_get_device(db_session):
+    data = DeviceCreate(name="客厅灯", type="light", mqtt_topic="home/light")
+    device = await create_device(db_session, data)
+    assert device.name == "客厅灯"
+
+    fetched = await get_device(db_session, device.id)
+    assert fetched is not None
+    assert fetched.id == device.id
+
+
+async def test_list_devices(db_session):
+    await create_device(db_session, DeviceCreate(name="设备1", type="switch", mqtt_topic="t1"))
+    await create_device(db_session, DeviceCreate(name="设备2", type="sensor", mqtt_topic="t2"))
+    devices = await list_devices(db_session)
+    assert len(devices) == 2
+
+
+async def test_update_device(db_session):
+    device = await create_device(db_session, DeviceCreate(name="灯", type="light", mqtt_topic="t"))
+    updated = await update_device(db_session, device.id, DeviceUpdate(name="新名字"))
+    assert updated.name == "新名字"
+
+
+async def test_delete_device(db_session):
+    device = await create_device(db_session, DeviceCreate(name="灯", type="light", mqtt_topic="t"))
+    assert await delete_device(db_session, device.id) is True
+    assert await get_device(db_session, device.id) is None
+
+
+async def test_delete_nonexistent_device(db_session):
+    assert await delete_device(db_session, "nonexistent") is False
+
+
+async def test_send_command(db_session):
+    device = await create_device(
+        db_session, DeviceCreate(name="灯", type="light", mqtt_topic="t", command_topic="t/set")
+    )
+    published = {}
+
+    async def mock_publish(topic, payload):
+        published[topic] = payload
+
+    log = await send_command(db_session, device.id, '{"state":"on"}', mock_publish)
+    assert log is not None
+    assert log.direction == "tx"
+    assert published["t/set"] == '{"state":"on"}'
+
+
+async def test_send_command_no_command_topic(db_session):
+    device = await create_device(db_session, DeviceCreate(name="传感器", type="sensor", mqtt_topic="t"))
+    with pytest.raises(ValueError, match="no command_topic"):
+        await send_command(db_session, device.id, '{"value":1}')
+
+
+async def test_handle_state_update(db_session):
+    device = await create_device(db_session, DeviceCreate(name="灯", type="light", mqtt_topic="home/light"))
+    updated = await handle_state_update(db_session, "home/light", '{"state":"on"}')
+    assert updated is not None
+    assert updated.state == '{"state":"on"}'
+    assert updated.is_online is True
+
+
+async def test_handle_state_update_unknown_topic(db_session):
+    result = await handle_state_update(db_session, "unknown/topic", "on")
+    assert result is None
+
+
+async def test_get_device_logs(db_session):
+    device = await create_device(
+        db_session, DeviceCreate(name="灯", type="light", mqtt_topic="t", command_topic="t/set")
+    )
+    async def noop(t, p):
+        pass
+    await send_command(db_session, device.id, '{"state":"on"}', noop)
+    await send_command(db_session, device.id, '{"state":"off"}', noop)
+
+    logs = await get_device_logs(db_session, device.id, limit=10)
+    assert len(logs) == 2
+
+
+async def test_dashboard_stats(db_session):
+    await create_device(db_session, DeviceCreate(name="在线设备", type="switch", mqtt_topic="t1"))
+    await create_device(db_session, DeviceCreate(name="离线设备", type="sensor", mqtt_topic="t2"))
+    await handle_state_update(db_session, "t1", "online")
+
+    stats = await get_dashboard_stats(db_session)
+    assert stats["total_devices"] == 2
+    assert stats["online_devices"] == 1
+    assert stats["offline_devices"] == 1