code: def test_rand_histogram_shift(
      self, input_param, input_data, expected_val
  ):
      g = RandHistogramShift(**input_param)
      g.set_random_state(123)
      result = g(**input_data)
      assert_allclose(
          result, expected_val, rtol=1e-4, atol=1e-4, type_test="tensor"
      )
  
file_path: MONAI/tests/test_rand_histogram_shift.py
imports: from __future__ import annotations
  import unittest
  import numpy
  import torch
  from parameterized import parameterized
  from monai.transforms import RandHistogramShift
  from tests.utils import TEST_NDARRAYS, assert_allclose
label_desc: Use image node_id 1 for calling the TestRandHistogramShift obj's underlying member method code with example usage: obj.test_rand_histogram_shift(input_param, input_data, expected_val) without return types