code: def testInvalidInput(self):
      self.assertComputeFails(DCT(), [])  # = testEmpty
      self.assertComputeFails(DCT(outputSize=10), [0, 2, 4])
  
imports: from essentia_test import *
label_desc: Use image node_id 5 for calling the TestDCT obj's underlying member method code with example usage: obj.testInvalidInput() without return types