code: def test_values(self):
      data = np.random.rand(10) + 1j * np.random.rand(10)
      self.assertTrue(np.allclose(np.angle(data), phase(data)))
      data = np.random.rand(10, 2) + 1j * np.random.rand(10, 2)
      self.assertTrue(np.allclose(np.angle(data), phase(data)))
  
imports: from __future__ import absolute_import, division, print_function
  import sys
  import unittest
  from os.path import join
  from madmom.audio.spectrogram import Spectrogram
  from madmom.audio.stft import *
  from .None import AUDIO_PATH
label_desc: Use image node_id 2 for calling the TestPhaseFunction obj's underlying member method code with example usage: obj.test_values() without return types