new_contents: from django.test import TestCase
  from django.test.utils import override_settings
  
  from ovp_core.helpers import get_address_model
  from ovp_core.models import SimpleAddress, GoogleAddress
  
  class GetAddressModelHelperTestCase(TestCase):
    def test_default_model(self):
      """Assert GoogleAddress is the default address model"""
      model = get_address_model()
      self.assertTrue(model == GoogleAddress)
  
    @override_settings(OVP_CORE={'ADDRESS_MODEL': 'ovp_core.models.SimpleAddress'})
    def test_setting(self):
      """Assert it's possible to modify the model by changing the setting"""
      model = get_address_model()
      self.assertTrue(model == SimpleAddress)
  
subject: Create tests for helpers