text: import unittest
  
  from forms_tests.widget_tests.base import WidgetTest
  
  from django.db import connection
  from django.test import TestCase, modify_settings
  
  
  @unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific tests")
  class PostgreSQLTestCase(TestCase):
      pass
  
  
  @unittest.skipUnless(connection.vendor == 'postgresql', "PostgreSQL specific tests")
  # To locate the widget's template.
  @modify_settings(INSTALLED_APPS={'append': 'django.contrib.postgres'})
  class PostgreSQLWidgetTestCase(WidgetTest, PostgreSQLTestCase):
      pass
  