old_contents: from django.test import TestCase
  from django.core import mail
  
  from oscar.core.compat import get_user_model
  from oscar.apps.customer.utils import Dispatcher
  from oscar.apps.customer.models import CommunicationEventType
  from oscar.test.factories import create_order
  
  
  User = get_user_model()
  
  
  class TestDispatcher(TestCase):
  
      def test_sending_a_order_related_messages(self):
          email = 'testuser@example.com'
          user = User.objects.create_user('testuser', email,
                                          'somesimplepassword')
  
          order_number = '12345'
          order = create_order(number=order_number, user=user)
          et = CommunicationEventType.objects.create(code="ORDER_PLACED",
                                                     name="Order Placed",
                                                     category="Order related")
  
          messages = et.get_messages({
              'order': order,
              'lines': order.lines.all()
          })
  
          self.assertIn(order_number, messages['body'])
          self.assertIn(order_number, messages['html'])
  
          dispatcher = Dispatcher()
          dispatcher.dispatch_order_messages(order, messages, et)
  
          self.assertEqual(len(mail.outbox), 1)
  
          message = mail.outbox[0]
          self.assertIn(order_number, message.body)
  
  
new_contents: from django.test import TestCase
  from django.core import mail
  
  from oscar.core.compat import get_user_model
  from oscar.apps.customer.utils import Dispatcher
  from oscar.apps.customer.models import CommunicationEventType
  from oscar.test.factories import create_order
  
  
  User = get_user_model()
  
  
  class TestDispatcher(TestCase):
  
      def test_sending_a_order_related_messages(self):
          email = 'testuser@example.com'
          user = User.objects.create_user('testuser', email,
                                          'somesimplepassword')
  
          order_number = '12345'
          order = create_order(number=order_number, user=user)
          et = CommunicationEventType.objects.create(code="ORDER_PLACED",
                                                     name="Order Placed",
                                                     category="Order related")
  
          messages = et.get_messages({
              'order': order,
              'lines': order.lines.all()
          })
  
          self.assertIn(order_number, messages['body'])
          self.assertIn(order_number, messages['html'])
  
          dispatcher = Dispatcher()
          dispatcher.dispatch_order_messages(order, messages, et)
  
          self.assertEqual(len(mail.outbox), 1)
  
          message = mail.outbox[0]
          self.assertIn(order_number, message.body)
  
          # test sending messages to emails without account and text body
          messages.pop('body')
          dispatcher.dispatch_direct_messages(email, messages)
          self.assertEqual(len(mail.outbox), 2)
  
subject: Add tests for sending messages to emails without account.