code: def test_forward_pass_1d(self):
      n = 32
      n_high_res = 2
      high_res = [torch.eye(n, 1) for i in range(n_high_res)]
  
      for n_low_res in range(6):
          for sinkhorn_iterations in range(3):
              criterion = SwaVLoss(
                  sinkhorn_iterations=sinkhorn_iterations
              )
              low_res = [torch.eye(n, 1) for i in range(n_low_res)]
  
              with self.subTest(
                  msg=f"n_low_res={n_low_res}, sinkhorn_iterations={sinkhorn_iterations}"
              ):
                  loss = criterion(high_res, low_res)
                  # loss should be almost zero for unit matrix
                  self.assertGreater(0.5, loss.cpu().numpy())
  
file_path: lightly/tests/loss/test_SwaVLoss.py
imports: import unittest
  import pytest
  import torch
  from pytest_mock import MockerFixture
  from torch import distributed
  from lightly.loss import SwaVLoss
label_desc: Use image node_id 4 for calling the TestSwaVLossUnitTest obj's underlying member method code with example usage: obj.test_forward_pass_1d() without return types