code: def test_field(self):
      test_field = Field(10, type(10))
  
      self.assertEqual(10, test_field.field_value)
      self.assertEqual(type(10), test_field.field_type)
      test_field.field_value = 15
      self.assertEqual(15, test_field.field_value)
  
imports: import unittest
  from textflint.input.component.field.field import *
label_desc: Use image node_id 1 for calling the TestField obj's underlying member method code with example usage: obj.test_field() without return types