code: def testMaxLength(self):
      # Asserts that 'maxLength' doesn't affect the result when it is longer than the signal.
      audio = MonoLoader(
          filename=join(
              testdata.audio_dir, "recorded", "mozart_c_major_30sec.wav"
          )
      )()
      result1 = Chromaprinter()(audio)
      result2 = Chromaprinter(maxLength=50)(audio)
  
      self.assertEqualVector(result1, result2)
  
file_path: essentia/test/src/unittests/highlevel/test_chromaprinter.py
imports: from essentia_test import *
  import essentia.streaming
label_desc: Use image node_id 4 for calling the TestChromaprinter obj's underlying member method code with example usage: obj.testMaxLength() without return types