code: def test_should_return_empty_metadata_list_for_missing_function(self):
      # missing function should return empty list
      entries = self.evadb.catalog().get_function_metadata_entries_by_function_name(
          "randomFunction"
      )
      self.assertEqual(len(entries), 0)
  
imports: import tempfile
  import unittest
  from test.util import DummyObjectDetector, create_dummy_batches, create_sample_video, file_remove, get_evadb_for_testing, shutdown_ray
  import numpy
  import pandas
  import pytest
  from evadb.binder.binder_utils import BinderError
  from evadb.catalog.catalog_type import ColumnType, NdArrayType
  from evadb.executor.executor_utils import ExecutorError
  from evadb.models.storage.batch import Batch
  from evadb.server.command_handler import execute_query_fetch_all
label_desc: Use image node_id 8 for calling the FunctionExecutorTest obj's underlying member method code with example usage: obj.test_should_return_empty_metadata_list_for_missing_function() without return types