code: def test_nonzero(
      self, in_type, input_param, input_data, expected_data
  ):
      normalizer = NormalizeIntensity(**input_param)
      im = in_type(input_data)
      normalized = normalizer(im)
      assert_allclose(
          normalized, in_type(expected_data), type_test="tensor"
      )
  
file_path: MONAI/tests/test_normalize_intensity.py
imports: from __future__ import annotations
  import unittest
  import numpy
  import torch
  from parameterized import parameterized
  from monai.transforms import NormalizeIntensity
  from tests.utils import TEST_NDARRAYS, NumpyImageTestCase2D, assert_allclose
label_desc: Use image node_id 2 for calling the TestNormalizeIntensity obj's underlying member method code with example usage: obj.test_nonzero(in_type, input_param, input_data, expected_data) without return types