class_docstr: Test settings class
class_docstr_tok: ["Test","settings","class"]
code: def test_invalidWidth(self):
      with self.assertRaises(ValueError):
          convert.ImageConvertSettings("png", 0, 10)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  from absl.testing import absltest
  from PIL import Image
  from PIL import ImageColor
  import convert
label_desc: Use image node_id 3 for calling the ImageConvertSettingsTests obj's underlying member method code with example usage: obj.test_invalidWidth() without return types