code: def test_find_plugin_error_not_found(mocker, fiftyone_plugins_dir):
      mocker.patch("fiftyone.config.plugins_dir", fiftyone_plugins_dir)
      plugin_dir_name = _DEFAULT_TEST_PLUGINS[0]
      with pytest.raises(ValueError):
          _ = fop.find_plugin(plugin_dir_name)
  
file_path: fiftyone/tests/unittests/plugins/core_tests.py
imports: import os
  import fiftyone
  import pytest
  import json
  import yaml
  from unittest import mock
  import fiftyone.plugins
label_desc: Use image node_id 10 for calling a global function with example usage: test_find_plugin_error_not_found(mocker, fiftyone_plugins_dir) without return types