code: def test_std_of_l2_normalized_uniform(self, eps: float = 1e-5):
      z = torch.eye(BATCH_SIZE)
      self.assertLessEqual(
          abs(
              debug.std_of_l2_normalized(z) - 1 / math.sqrt(z.shape[1])
          ),
          eps,
      )
  
file_path: lightly/tests/utils/test_debug.py
imports: import math
  import unittest
  import numpy
  import torch
  from PIL import Image
  from lightly.data import collate
  from lightly.utils import debug
label_desc: Use image node_id 3 for calling the TestDebug obj's underlying member method code with example usage: obj.test_std_of_l2_normalized_uniform(eps) without return types