def METHOD_NAME(self):
    i = InboxMessage.objects.create(sender=self.user2, to=self.user1, message="foo")
    assert not i.read
    resp = self.client.get(reverse("messages.read", args=[i.pk]), follow=True)
    self.assertEqual(200, resp.status_code)
    assert InboxMessage.objects.get(pk=i.pk).read