code: def test_forward_pass__error_different_shapes(self):
      torch.manual_seed(0)
      loss = TiCoLoss()
      x0 = torch.randn((2, 32))
      x1 = torch.randn((2, 16))
      with self.assertRaises(AssertionError):
          loss(x0, x1, update_covariance_matrix=False)
  
file_path: lightly/tests/loss/test_TicoLoss.py
imports: import unittest
  import pytest
  import torch
  from pytest_mock import MockerFixture
  from torch import distributed
  from lightly.loss.tico_loss import TiCoLoss
label_desc: Use image node_id 4 for calling the TestTiCoLossUnitTest obj's underlying member method code with example usage: obj.test_forward_pass__error_different_shapes() without return types