code: def testPowToDb(self):
      pow = 12.34
      expected_db = 10 * math.log10(pow)
      self.assertAlmostEqual(expected_db, pow2db(pow))
  
file_path: essentia/test/src/unittests/base/test_utils.py
imports: from essentia_test import *
  import math
  import cmath
  import sys
label_desc: Use image node_id 7 for calling the TestUtils obj's underlying member method code with example usage: obj.testPowToDb() without return types