code: def testTruedivFails(self):
      unknown = tensor_shape.Dimension(None)
      self.assertEqual((unknown // unknown).value, None)
      with self.assertRaisesRegex(
          TypeError, r"unsupported operand type"
      ):
          unknown / unknown
  
imports: from absl.testing import parameterized
  from tensorflow.core.framework import tensor_shape_pb2
  from tensorflow.core.function import trace_type
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 14 for calling the ShapeTest obj's underlying member method code with example usage: obj.testTruedivFails() without return types