code: def testVectorMatrixMixed(self):
      # yaml
      testFile = "foo: [[[1, 2], [3, 4]], 3]"
      writeFile(testFile, "testfile")
  
      self.assertComputeFails(YamlInput(filename="testfile"))
      os.remove("testfile")
  
      # json
      testFile = '{ "foo": [[[1, 2], [3, 4]], 3] }'
      writeFile(testFile, "testfile")
  
      self.assertComputeFails(
          YamlInput(filename="testfile", format="json")
      )
      os.remove("testfile")
  
imports: from essentia_test import *
  import os
label_desc: Use image node_id 16 for calling the TestYamlInput obj's underlying member method code with example usage: obj.testVectorMatrixMixed() without return types