Fix devolo_home_network devices not reporting a MAC address

homeassistant/components/devolo_home_network/entity.py

@@ -9,6 +9,7 @@
 )
 from devolo_plc_api.plcnet_api import DataRate, LogicalNetwork
 
+from homeassistant.const import ATTR_CONNECTIONS
 from homeassistant.helpers.device_registry import CONNECTION_NETWORK_MAC, DeviceInfo
 from homeassistant.helpers.entity import Entity
 from homeassistant.helpers.update_coordinator import (
@@ -45,14 +46,17 @@ def __init__(
 
         self._attr_device_info = DeviceInfo(
             configuration_url=f"http://{self.device.ip}",
-            connections={(CONNECTION_NETWORK_MAC, self.device.mac)},
             identifiers={(DOMAIN, str(self.device.serial_number))},
             manufacturer="devolo",
             model=self.device.product,
             model_id=self.device.mt_number,
             serial_number=self.device.serial_number,
             sw_version=self.device.firmware_version,
         )
+        if self.device.mac:
+            self._attr_device_info[ATTR_CONNECTIONS] = {
+                (CONNECTION_NETWORK_MAC, self.device.mac)
+            }
         self._attr_translation_key = self.entity_description.key
         self._attr_unique_id = (
             f"{self.device.serial_number}_{self.entity_description.key}"

tests/components/devolo_home_network/mock.py

@@ -50,7 +50,7 @@ async def async_connect(
         self, session_instance: httpx.AsyncClient | None = None
     ) -> None:
         """Give a mocked device the needed properties."""
-        self.mac = DISCOVERY_INFO.properties["PlcMacAddress"]
+        self.mac = DISCOVERY_INFO.properties["PlcMacAddress"] if self.plcnet else None
         self.mt_number = DISCOVERY_INFO.properties["MT"]
         self.product = DISCOVERY_INFO.properties["Product"]
         self.serial_number = DISCOVERY_INFO.properties["SN"]

tests/components/devolo_home_network/snapshots/test_init.ambr

@@ -1,5 +1,5 @@
 # serializer version: 1
-# name: test_setup_entry
+# name: test_setup_entry[mock_device]
   DeviceRegistryEntrySnapshot({
     'area_id': None,
     'config_entries': <ANY>,
@@ -35,3 +35,35 @@
     'via_device_id': None,
   })
 # ---
+# name: test_setup_entry[mock_repeater_device]
+  DeviceRegistryEntrySnapshot({
+    'area_id': None,
+    'config_entries': <ANY>,
+    'configuration_url': 'http://192.0.2.1',
+    'connections': set({
+    }),
+    'disabled_by': None,
+    'entry_type': None,
+    'hw_version': None,
+    'id': <ANY>,
+    'identifiers': set({
+      tuple(
+        'devolo_home_network',
+        '1234567890',
+      ),
+    }),
+    'is_new': False,
+    'labels': set({
+    }),
+    'manufacturer': 'devolo',
+    'model': 'dLAN pro 1200+ WiFi ac',
+    'model_id': '2730',
+    'name': 'Mock Title',
+    'name_by_user': None,
+    'primary_config_entry': <ANY>,
+    'serial_number': '1234567890',
+    'suggested_area': None,
+    'sw_version': '5.6.1',
+    'via_device_id': None,
+  })
+# ---

tests/components/devolo_home_network/test_init.py

@@ -27,13 +27,16 @@
 from tests.common import MockConfigEntry
 
 
+@pytest.mark.parametrize("device", ["mock_device", "mock_repeater_device"])
 async def test_setup_entry(
     hass: HomeAssistant,
-    mock_device: MockDevice,
+    device: str,
     device_registry: dr.DeviceRegistry,
     snapshot: SnapshotAssertion,
+    request: pytest.FixtureRequest,
 ) -> None:
     """Test setup entry."""
+    mock_device: MockDevice = request.getfixturevalue(device)
     entry = configure_integration(hass)
     assert await hass.config_entries.async_setup(entry.entry_id)
     await hass.async_block_till_done()