Add test framework for smartcamera (#1192)

kasa/tests/smartcamera/test_smartcamera.py

@@ -0,0 +1,20 @@
+"""Tests for smart camera devices."""
+
+from __future__ import annotations
+
+import pytest
+
+from kasa import Device, DeviceType
+
+from ..conftest import device_smartcamera
+
+
+@device_smartcamera
+async def test_state(dev: Device):
+    if dev.device_type is DeviceType.Hub:
+        pytest.skip("Hubs cannot be switched on and off")
+
+    state = dev.is_on
+    await dev.set_state(not state)
+    await dev.update()
+    assert dev.is_on is not state