code: def testInsertManyEmptyTensor(self):
      with self.cached_session():
          error_message = (
              "Empty tensors are not supported, but received shape "
              r"\'\(0,\)\' at index 1"
          )
          with self.assertRaisesRegex(ValueError, error_message):
              data_flow_ops.Barrier(
                  (dtypes.float32, dtypes.float32),
                  shapes=((1,), (0,)),
                  name="B",
              )
  
imports: import time
  import numpy
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import tensor
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import data_flow_ops
  from tensorflow.python.platform import test
label_desc: Use image node_id 3 for calling the BarrierTest obj's underlying member method code with example usage: obj.testInsertManyEmptyTensor() without return types