code: def test_create_tensorboard_writer(tmp_path):
      writer = _create_tensorboard_writer(tmp_path)
      assert isinstance(writer, SummaryWriter)
      writer.add_scalar("param", 123)
      writer.close()
  
file_path: traintool/tests/test_main.py
imports: import comet_ml
  import pytest
  from tensorboardX import SummaryWriter
  from conftest import create_dataset
  from traintool.main import connect_comet, train, load, _resolve_model, _write_info_file, _read_info_file, _create_comet_experiment, _create_tensorboard_writer
  from traintool.model_wrapper import ModelWrapper
  from traintool.utils import DummyExperiment
label_desc: Use image node_id 4 for calling a global function with example usage: test_create_tensorboard_writer(tmp_path) without return types