code: def test_init_default(self):
      strategy = ExpectedGradientLength(2)
  
      self.assertEqual(2, strategy.num_classes)
      self.assertEqual(50, strategy.batch_size)
      self.assertEqual("cuda", strategy.device)
  
file_path: small-text/tests/unit/small_text/integrations/pytorch/test_strategies.py
imports: import unittest
  import pytest
  import numpy
  from small_text.integrations.pytorch.exceptions import PytorchNotFoundError
label_desc: Use image node_id 1 for calling the ExpectedGradientLengthTest obj's underlying member method code with example usage: obj.test_init_default() without return types