code: def test_encode(self):
      prot = tfe.protocol.Pond()
      tfe.set_protocol(prot)
  
      expected = np.array([1234567.9875])
      x = prot.define_constant(expected)
      actual = x.to_native()
      np.testing.assert_array_almost_equal(actual, expected, decimal=3)
  
imports: import unittest
  import numpy
  import pytest
  import tensorflow
  import tf_encrypted
  from tf_encrypted.protocol.pond import PondMaskedTensor
  from tf_encrypted.protocol.pond import PondPublicTensor
  from tf_encrypted.tensor import fixed100
  from tf_encrypted.tensor import fixed100_ni
  from tf_encrypted.tensor import int64factory
  from tf_encrypted.tensor import int100factory
  from tf_encrypted.tensor import native_factory
label_desc: Use image node_id 1 for calling the TestPond obj's underlying member method code with example usage: obj.test_encode() without return types