new_contents: from django.test import TestCase, override_settings
  from django.core import mail
  
  from wagtail.tests.utils import WagtailTestUtils
  from wagtail.wagtailcore.models import Site
  
  
  class TestUserPasswordReset(TestCase, WagtailTestUtils):
      fixtures = ['test.json']
  
      # need to clear urlresolver caches before/after tests, because we override ROOT_URLCONF
      # in some tests here
      def setUp(self):
          from django.core.urlresolvers import clear_url_caches
          clear_url_caches()
  
      def tearDown(self):
          from django.core.urlresolvers import clear_url_caches
          clear_url_caches()
  
      @override_settings(ROOT_URLCONF="wagtail.wagtailadmin.urls")
      def test_email_found_default_url(self):
          response = self.client.post('/password_reset/', {'email': 'siteeditor@example.com'})
          self.assertEqual(response.status_code, 302)
          self.assertEqual(len(mail.outbox), 1)
          self.assertIn("testserver", mail.outbox[0].body)
  
      @override_settings(ROOT_URLCONF="wagtail.wagtailadmin.urls", BASE_URL='http://mysite.com')
      def test_email_found_base_url(self):
          response = self.client.post('/password_reset/', {'email': 'siteeditor@example.com'})
          self.assertEqual(response.status_code, 302)
          self.assertEqual(len(mail.outbox), 1)
          self.assertIn("mysite.com", mail.outbox[0].body)
  
subject: Add tests for the password reset emails