code: def test_upload_file_to_root_directory(
      self,
      mock_resolve_file_path,
      mock_ensure_folders_exists,
      mock_get_conn,
      mock_media_file_upload,
  ):
      mock_get_conn.return_value.files.return_value.create.return_value.execute.return_value = {
          "id": "FILE_ID"
      }
  
      return_value = self.gdrive_hook.upload_file(
          "local_path", "remote_path"
      )
  
      mock_ensure_folders_exists.assert_not_called()
      mock_resolve_file_path.assert_not_called()
      mock_get_conn.assert_has_calls(
          [
              mock.call()
              .files()
              .create(
                  body={"name": "remote_path", "parents": ["root"]},
                  fields="id",
                  media_body=mock_media_file_upload.return_value,
                  supportsAllDrives=True,
              )
          ]
      )
      assert return_value == "FILE_ID"
  
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from airflow.providers.google.suite.hooks.drive import GoogleDriveHook
  from tests.providers.google.cloud.utils.base_gcp_mock import GCP_CONNECTION_WITH_PROJECT_ID
label_desc: Use image node_id 16 for calling the TestGoogleDriveHook obj's underlying member method code with example usage: obj.test_upload_file_to_root_directory(mock_resolve_file_path, mock_ensure_folders_exists, mock_get_conn, mock_media_file_upload) without return types