Add support for service translations (#95984)

tests/helpers/test_service.py

@@ -1,6 +1,8 @@
 """Test service helpers."""
 from collections import OrderedDict
+from collections.abc import Iterable
 from copy import deepcopy
+from typing import Any
 from unittest.mock import AsyncMock, Mock, patch
 
 import pytest
@@ -556,13 +558,47 @@ async def test_async_get_all_descriptions(hass: HomeAssistant) -> None:
 
     logger = hass.components.logger
     logger_config = {logger.DOMAIN: {}}
-    await async_setup_component(hass, logger.DOMAIN, logger_config)
-    descriptions = await service.async_get_all_descriptions(hass)
+
+    async def async_get_translations(
+        hass: HomeAssistant,
+        language: str,
+        category: str,
+        integrations: Iterable[str] | None = None,
+        config_flow: bool | None = None,
+    ) -> dict[str, Any]:
+        """Return all backend translations."""
+        translation_key_prefix = f"component.{logger.DOMAIN}.services.set_default_level"
+        return {
+            f"{translation_key_prefix}.name": "Translated name",
+            f"{translation_key_prefix}.description": "Translated description",
+            f"{translation_key_prefix}.fields.level.name": "Field name",
+            f"{translation_key_prefix}.fields.level.description": "Field description",
+        }
+
+    with patch(
+        "homeassistant.helpers.service.translation.async_get_translations",
+        side_effect=async_get_translations,
+    ):
+        await async_setup_component(hass, logger.DOMAIN, logger_config)
+        descriptions = await service.async_get_all_descriptions(hass)
 
     assert len(descriptions) == 2
 
-    assert "description" in descriptions[logger.DOMAIN]["set_level"]
-    assert "fields" in descriptions[logger.DOMAIN]["set_level"]
+    assert descriptions[logger.DOMAIN]["set_default_level"]["name"] == "Translated name"
+    assert (
+        descriptions[logger.DOMAIN]["set_default_level"]["description"]
+        == "Translated description"
+    )
+    assert (
+        descriptions[logger.DOMAIN]["set_default_level"]["fields"]["level"]["name"]
+        == "Field name"
+    )
+    assert (
+        descriptions[logger.DOMAIN]["set_default_level"]["fields"]["level"][
+            "description"
+        ]
+        == "Field description"
+    )
 
     hass.services.async_register(logger.DOMAIN, "new_service", lambda x: None, None)
     service.async_set_service_schema(
@@ -602,7 +638,6 @@ async def test_async_get_all_descriptions(hass: HomeAssistant) -> None:
         "another_service_with_response",
         {"description": "response service"},
     )
-
     descriptions = await service.async_get_all_descriptions(hass)
     assert "another_new_service" in descriptions[logger.DOMAIN]
     assert "service_with_optional_response" in descriptions[logger.DOMAIN]