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