code: def testRegression(self):
      testdir = join(filedir(), "crosscorrelation")
      input1 = readVector(join(testdir, "input1.txt"))
      input2 = readVector(join(testdir, "input2.txt"))
      expected = readVector(join(testdir, "output.txt"))
      xcor = CrossCorrelation(minLag=-5, maxLag=5)
      self.assertAlmostEqualVector(xcor(input1, input2), expected, 1e-5)
  
file_path: essentia/test/src/unittests/stats/test_crosscorrelation.py
imports: from essentia_test import *
label_desc: Use image node_id 1 for calling the TestCrossCorrelation obj's underlying member method code with example usage: obj.testRegression() without return types