code: def test_load_checkpoint_with_int(self):
      index = self.CHECKPOINT_EPOCHS[0]
      filename = self.checkpoint_paths[0]
      self.test_experiment.load_checkpoint(index)
  
      self.assertEqual(
          self.test_experiment.model.network.state_dict(),
          torch.load(filename, map_location="cpu"),
      )
  
imports: import os
  from tempfile import TemporaryDirectory
  from unittest import TestCase
  import torch
  from torch import nn
  from poutyne import Experiment
  from tests.framework.experiment.utils import ConstantMetric, ConstantMetricCallback
  from tests.framework.tools import SomeDataGeneratorWithLen
label_desc: Use image node_id 3 for calling the BaseExperimentCheckpointLoadingTest obj's underlying member method code with example usage: obj.test_load_checkpoint_with_int() without return types