code: def testZeroSignals(self):
      x = [0] * 50
      y = [0] * 50
      self.assertAlmostEqualVector(
          CrossCorrelation(minLag=-49, maxLag=49)(x, y),
          [0] * (50 * 2 - 1),
      )
  
      x = [10] * 50
      y = [0]
      self.assertAlmostEqualVector(
          CrossCorrelation(maxLag=49)(x, y), [0] * 50
      )
  
file_path: essentia/test/src/unittests/stats/test_crosscorrelation.py
imports: from essentia_test import *
label_desc: Use image node_id 8 for calling the TestCrossCorrelation obj's underlying member method code with example usage: obj.testZeroSignals() without return types