code: def test_log_dir(self, mock_board, _):
      state = {torchbearer.MODEL: nn.Sequential(nn.Conv2d(3, 3, 3))}
  
      tboard = TensorBoardProjector(
          log_dir="./test", comment="torchbearer"
      )
      tboard.on_start(state)
      tboard.on_end(state)
  
      mock_board.assert_called_once_with(
          log_dir=os.path.join("./test", "Sequential_torchbearer")
      )
  
imports: import os
  from unittest import TestCase
  import warnings
  import torch
  import torch.nn
  from mock import patch, Mock, ANY, MagicMock
  import torchbearer
  from torchbearer.callbacks import TensorBoard, TensorBoardImages, TensorBoardProjector, TensorBoardText
label_desc: Use image node_id 1 for calling the TestTensorBoardProjector obj's underlying member method code with example usage: obj.test_log_dir(mock_board, _) without return types