code: def test_power_bandwidth(self):
      np.testing.assert_almost_equal(power_bandwidth(const0, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(const1, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(constNeg, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(constF, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(lin, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(lin0, Fs), 0.0)
      np.testing.assert_almost_equal(power_bandwidth(wave, Fs), 2.0)
      np.testing.assert_almost_equal(
          power_bandwidth(offsetWave, Fs), 2.0
      )
      np.testing.assert_almost_equal(
          power_bandwidth(noiseWave, Fs), 2.0
      )
  
imports: import unittest
  import numpy
  from tsfel.feature_extraction.features import *
label_desc: Use image node_id 53 for calling the TestFeatures obj's underlying member method code with example usage: obj.test_power_bandwidth() without return types