code: def test_get_styles_fail(self):
      style_cases = self._get_invalid_style_cases()
      model = self.model
      for style in style_cases:
          with self.assertRaises(_ToolkitError):
              model.get_styles(style=style)
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import unittest
  import pytest
  from .None import util
  import turicreate
  import tempfile
  import numpy
  import platform
  import sys
  import os
  from turicreate.toolkits._main import ToolkitError
  from turicreate.toolkits._internal_utils import _raise_error_if_not_sframe, _mac_ver
label_desc: Use image node_id 19 for calling the StyleTransferTest obj's underlying member method code with example usage: obj.test_get_styles_fail() without return types