Change Alexa default display category based on media_player device_class (#28191)

* Support default display category based one media_player device_class.

* Support default display category based one media_player device_class.

homeassistant/components/alexa/entities.py

@@ -391,6 +391,10 @@ class MediaPlayerCapabilities(AlexaEntity):
 
     def default_display_categories(self):
         """Return the display categories for this entity."""
+        device_class = self.entity.attributes.get(ATTR_DEVICE_CLASS)
+        if device_class == media_player.DEVICE_CLASS_SPEAKER:
+            return [DisplayCategory.SPEAKER]
+
         return [DisplayCategory.TV]
 
     def interfaces(self):

tests/components/alexa/test_smart_home.py

@@ -968,6 +968,25 @@ async def test_media_player_power(hass):
     )
 
 
+async def test_media_player_speaker(hass):
+    """Test media player discovery with device class speaker."""
+    device = (
+        "media_player.test",
+        "off",
+        {
+            "friendly_name": "Test media player",
+            "supported_features": 51765,
+            "volume_level": 0.75,
+            "device_class": "speaker",
+        },
+    )
+    appliance = await discovery_test(device, hass)
+
+    assert appliance["endpointId"] == "media_player#test"
+    assert appliance["displayCategories"][0] == "SPEAKER"
+    assert appliance["friendlyName"] == "Test media player"
+
+
 async def test_alert(hass):
     """Test alert discovery."""
     device = ("alert.test", "off", {"friendly_name": "Test alert"})