code: def test_empty_database(empty_database, testing_helpers):
      """Test destination database is empty as expected"""
      storage = setup_storage()
      db = storage._db
      with db.locked_database(write=False) as internal_db:
          collections = set(internal_db._db.keys())
      assert collections == {
          "experiments",
          "algo",
          "trials",
          "benchmarks",
      }
      testing_helpers.check_db(
          db, nb_exps=0, nb_algos=0, nb_trials=0, nb_benchmarks=0
      )
  
file_path: orion/tests/functional/commands/test_db_load.py
imports: import os
  import pytest
  import orion.core.cli
  from orion.core.io.database.pickleddb import PickledDB
  from orion.storage.base import setup_storage
label_desc: Use image node_id 2 for calling a global function with example usage: test_empty_database(empty_database, testing_helpers) without return types