code: def test_empty_string_att_class_get_attr_return_empty_string(self):
      actual = getattr(EmptyStringAttrClass(), "an_attribute")
      expected = ""
      self.assertEqual(actual, expected)
  
file_path: poutyne/tests/framework/callbacks/test_color_formatting.py
imports: from unittest import TestCase
  from unittest.mock import patch
  from poutyne import ColorProgress, EmptyStringAttrClass
label_desc: Use image node_id 1 for calling the EmptyStringAttrClassTest obj's underlying member method code with example usage: obj.test_empty_string_att_class_get_attr_return_empty_string() without return types