Add docstrings

Author: Shulyaka

tests/test_application.py

@@ -686,6 +686,7 @@ async def test_energy_scan(app):
 
 
 def test_neighbors_updated(app, device):
+    """Test LQI from neighbour scan."""
     router = device(ieee=b"\x01\x02\x03\x04\x05\x06\x07\x08")
     router.radio_details = mock.MagicMock()
     end_device = device(ieee=b"\x08\x07\x06\x05\x04\x03\x02\x01")
@@ -746,6 +747,7 @@ def test_neighbors_updated(app, device):
 
 
 def test_routes_updated_schedule(app):
+    """Test scheduling the sync routes_updated function."""
     app.create_task = mock.MagicMock()
     app._routes_updated = mock.MagicMock()
 
@@ -758,6 +760,7 @@ def test_routes_updated_schedule(app):
 
 
 async def test_routes_updated(app, device):
+    """Test RSSI on routes scan update."""
     rssi = 0x50
     app._api._at_command = mock.AsyncMock(return_value=rssi)
 

zigpy_xbee/zigbee/application.py

@@ -413,6 +413,7 @@ def routes_updated(
     async def _routes_updated(
         self, ieee: zigpy.types.EUI64, routes: list[zdo_t.Route]
     ) -> None:
+        """Get RSSI for adjacent routers on Route update from Mgmt_Rtg_req."""
         for route in routes:
             if (
                 route.DstNWK == self.state.node_info.nwk