code: def testWavLeftRightOffset(self):
      # file with 9 impulses in right channel and 10 in left channel
      dir = join(
          testdata.audio_dir,
          "generated",
          "synthesised",
          "impulse",
          "left_right_offset",
      )
      filename = join(dir, "impulses_1second_44100.wav")
      left = self.load(filename, "left", 44100)
      right = self.load(filename, "right", 44100)
      mix = self.load(filename, "mix", 44100)
      self.assertEqual(self.round(sum(left)), 10)
      self.assertEqual(self.round(sum(right)), 9)
      self.assertAlmostEqualFixedPrecision(sum(mix), 9.5, 3)
  
imports: from essentia_test import *
  from numpy import fabs
label_desc: Use image node_id 8 for calling the TestMonoLoader obj's underlying member method code with example usage: obj.testWavLeftRightOffset() without return types