code: def test_as_tensor_converts_field_correctly(self):
      index_field = IndexField(4, self.text)
      tensor = (
          index_field.as_tensor(index_field.get_padding_lengths())
          .detach()
          .cpu()
          .numpy()
      )
      numpy.testing.assert_array_equal(tensor, numpy.array([4]))
  
file_path: magnitude/pymagnitude/third_party/allennlp/tests/data/fields/index_field_test.py
imports: from __future__ import with_statement
  from __future__ import absolute_import
  from __future__ import print_function
  import numpy
  import pytest
  from allennlp.common.checks import ConfigurationError
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data import Token
  from allennlp.data.fields import TextField, IndexField
  from allennlp.data.token_indexers import SingleIdTokenIndexer
label_desc: Use image node_id 2 for calling the TestIndexField obj's underlying member method code with example usage: obj.test_as_tensor_converts_field_correctly() without return types