code: def testTwoIterations(self):
      input1 = [3] * 100
      input2 = [3.1] * 100
  
      fluxAlgo = Flux()
      self.assertAlmostEqual(fluxAlgo(input1), 30)
      self.assertAlmostEqual(fluxAlgo(input2), 1, 1e-6)
  
file_path: essentia/test/src/unittests/spectral/test_flux.py
imports: from essentia_test import *
label_desc: Use image node_id 4 for calling the TestFlux obj's underlying member method code with example usage: obj.testTwoIterations() without return types