code: def test_fifo(self):
      prot = tfe.protocol.Pond()
      tfe.set_protocol(prot)
  
      shape = (10, 10)
  
      q = tfe.queue.FIFOQueue(
          capacity=10,
          shape=shape,
      )
      assert isinstance(q, tfe.protocol.pond.AdditiveFIFOQueue)
  
      raw = np.full(shape, 5)
  
      x = tfe.define_private_input(
          "inputter", lambda: tf.convert_to_tensor(raw)
      )
      assert isinstance(x, tfe.protocol.pond.PondPrivateTensor)
  
      q.enqueue(x)
      y = q.dequeue()
      assert isinstance(y, tfe.protocol.pond.PondPrivateTensor)
      assert y.backing_dtype == x.backing_dtype
      assert y.shape == x.shape
      res = y.reveal().to_native()
      np.testing.assert_array_equal(res, raw)
  
imports: import unittest
  import numpy
  import tensorflow
  import tf_encrypted
label_desc: Use image node_id 1 for calling the TestFIFO obj's underlying member method code with example usage: obj.test_fifo() without return types