code: def test_weak_tensor_in_tf_func_with_spec(self):
      # Test weak tensor spec with matching input.
      weak_tensor_spec = WeakTensor.Spec(tensor.TensorSpec([2]))
      wt = WeakTensor.from_tensor(constant_op.constant([1.0, 2.0]))
  
      @def_function.function(input_signature=[weak_tensor_spec])
      def f(x):
          return x
  
      _ = f(wt)
      # Test weak tensor spec with mismatching input.
      wt_mismatch = WeakTensor.from_tensor(
          constant_op.constant([1.0, 2.0, 3.0])
      )
      with self.assertRaises(TypeError):
          _ = f(wt_mismatch)
  
imports: import numpy
  from tensorflow.python.eager import backprop
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import extension_type
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.framework.weak_tensor import EagerWeakTensor
  from tensorflow.python.framework.weak_tensor import GraphWeakTensor
  from tensorflow.python.framework.weak_tensor import WeakTensor
  from tensorflow.python.module import module
  from tensorflow.python.platform import googletest
  from tensorflow.python.saved_model.load import load
  from tensorflow.python.saved_model.save import save
  from tensorflow.python.types import core
label_desc: Use image node_id 9 for calling the WeakTensorTest obj's underlying member method code with example usage: obj.test_weak_tensor_in_tf_func_with_spec() and returns: x