Add assistant filter to expose entities list command (#138817)

tests/components/homeassistant/test_exposed_entities.py

@@ -539,6 +539,70 @@ async def test_list_exposed_entities(
     }
 
 
+async def test_list_exposed_entities_with_filter(
+    hass: HomeAssistant,
+    entity_registry: er.EntityRegistry,
+    hass_ws_client: WebSocketGenerator,
+) -> None:
+    """Test list exposed entities with filter."""
+    ws_client = await hass_ws_client(hass)
+    assert await async_setup_component(hass, "homeassistant", {})
+    await hass.async_block_till_done()
+
+    entry1 = entity_registry.async_get_or_create("test", "test", "unique1")
+    entry2 = entity_registry.async_get_or_create("test", "test", "unique2")
+
+    # Expose 1 to Alexa
+    await ws_client.send_json_auto_id(
+        {
+            "type": "homeassistant/expose_entity",
+            "assistants": ["cloud.alexa"],
+            "entity_ids": [entry1.entity_id],
+            "should_expose": True,
+        }
+    )
+    response = await ws_client.receive_json()
+    assert response["success"]
+
+    # Expose 2 to Google
+    await ws_client.send_json_auto_id(
+        {
+            "type": "homeassistant/expose_entity",
+            "assistants": ["cloud.google_assistant"],
+            "entity_ids": [entry2.entity_id],
+            "should_expose": True,
+        }
+    )
+    response = await ws_client.receive_json()
+    assert response["success"]
+
+    # List with filter
+    await ws_client.send_json_auto_id(
+        {"type": "homeassistant/expose_entity/list", "assistant": "cloud.alexa"}
+    )
+    response = await ws_client.receive_json()
+    assert response["success"]
+    assert response["result"] == {
+        "exposed_entities": {
+            "test.test_unique1": {"cloud.alexa": True},
+        },
+    }
+
+    await ws_client.send_json_auto_id(
+        {
+            "type": "homeassistant/expose_entity/list",
+            "assistant": "cloud.google_assistant",
+        }
+    )
+    response = await ws_client.receive_json()
+    assert response["success"]
+    assert response["result"] == {
+        "exposed_entities": {
+            "test.test_unique2": {"cloud.google_assistant": True},
+        },
+    }
+
+
 async def test_listeners(
     hass: HomeAssistant, entity_registry: er.EntityRegistry
 ) -> None: