code: def test_correct_parameters_multi_channels(
      self, boundaries, frequencies, fraction
  ):
      self.assertIsInstance(
          SignalRandAddSinePartial(boundaries, frequencies, fraction),
          SignalRandAddSinePartial,
      )
      sig = np.load(TEST_SIGNAL)
      partialsine = SignalRandAddSinePartial(
          boundaries, frequencies, fraction
      )
      partialsinesignal = partialsine(sig)
      self.assertEqual(partialsinesignal.shape[1], sig.shape[1])
  
file_path: MONAI/tests/test_signal_rand_add_sine_partial.py
imports: from __future__ import annotations
  import os
  import unittest
  import numpy
  from parameterized import parameterized
  from monai.transforms import SignalRandAddSinePartial
  from monai.utils.type_conversion import convert_to_tensor
label_desc: Use image node_id 1 for calling the TestSignalRandAddSinePartialNumpy obj's underlying member method code with example usage: obj.test_correct_parameters_multi_channels(boundaries, frequencies, fraction) without return types