code: def test_classify_with_incomplete_data(self):
      data = self.data.copy()
      del data[self.features[0]]
      with self.assertRaises(_ToolkitError):
          pred = self.model.classify(data)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import turicreate
  import random
  import tempfile
  import math
  import numpy
  from numbers import Number
  from .None import util
  import pytest
  from turicreate.toolkits._internal_utils import _mac_ver
  from turicreate.toolkits._main import ToolkitError
  import uuid
label_desc: Use image node_id 8 for calling the ActivityClassifierTest obj's underlying member method code with example usage: obj.test_classify_with_incomplete_data() without return types