code: def testCastAssert(self):
      spec = tensor.TensorSpec([], dtypes.float32)
      ctx = trace_type.InternalCastContext()
      with self.assertRaises(TypeError):
          _ = spec.cast([1, 2, 3], ctx)
  
imports: import pickle
  from absl.testing import parameterized
  import numpy
  from tensorflow.core.framework import full_type_pb2
  from tensorflow.core.function import trace_type
  from tensorflow.python.eager import context
  from tensorflow.python.framework import constant_op
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.framework import type_spec
  from tensorflow.python.framework.type_utils import fulltypes_for_flat_tensors
  from tensorflow.python.ops import array_ops
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 31 for calling the TensorSpecTest obj's underlying member method code with example usage: obj.testCastAssert() without return types