code: def testConstantInput(self):
      beats = ones(100)
      self.assertComputeFails(BpmRubato(), (beats))
      beats = zeros(100)
      self.assertComputeFails(BpmRubato(), (beats))
  
file_path: essentia/test/src/unittests/rhythm/test_bpmrubato.py
imports: from essentia_test import *
label_desc: Use image node_id 5 for calling the TestBpmRubato obj's underlying member method code with example usage: obj.testConstantInput() without return types