fix more mypy type errors

Author: ssh-esh

libs/elasticsearch/tests/integration_tests/_async/test_retrievers.py

@@ -220,9 +220,9 @@ async def test_fail_content_field_and_mapper(
         with pytest.raises(ValueError):
             AsyncElasticsearchRetriever(
                 content_field="text",
-                document_mapper=lambda x: x,  # type: ignore[arg-type]
+                document_mapper=lambda x: x,  # type: ignore[arg-type,return-value]
                 index_name="foo",
-                body_func=lambda x: x,  # type: ignore[arg-type]
+                body_func=lambda x: x,  # type: ignore[arg-type,return-value]
                 client=es_client,
             )
 
@@ -235,6 +235,6 @@ async def test_fail_neither_content_field_nor_mapper(
         with pytest.raises(ValueError):
             AsyncElasticsearchRetriever(
                 index_name="foo",
-                body_func=lambda x: x,  # type: ignore[arg-type]
+                body_func=lambda x: x,  # type: ignore[arg-type,return-value]
                 client=es_client,
             )

libs/elasticsearch/tests/integration_tests/_sync/test_retrievers.py

@@ -210,9 +210,9 @@ def test_fail_content_field_and_mapper(self, es_client: Elasticsearch) -> None:
         with pytest.raises(ValueError):
             ElasticsearchRetriever(
                 content_field="text",
-                document_mapper=lambda x: x,  # type: ignore[arg-type]
+                document_mapper=lambda x: x,  # type: ignore[arg-type,return-value]
                 index_name="foo",
-                body_func=lambda x: x,  # type: ignore[arg-type]
+                body_func=lambda x: x,  # type: ignore[arg-type,return-value]
                 client=es_client,
             )
 
@@ -225,6 +225,6 @@ def test_fail_neither_content_field_nor_mapper(
         with pytest.raises(ValueError):
             ElasticsearchRetriever(
                 index_name="foo",
-                body_func=lambda x: x,  # type: ignore[arg-type]
+                body_func=lambda x: x,  # type: ignore[arg-type,return-value]
                 client=es_client,
             )