code: def testZero(self):
      (freq, cents) = TuningFrequency()([0], [0])
      self.assertAlmostEqual(freq, 440)
      self.assertAlmostEqual(cents, 0)
  
imports: from essentia_test import *
label_desc: Use image node_id 3 for calling the TestTuningFrequency obj's underlying member method code with example usage: obj.testZero() without return types