def METHOD_NAME(self):
    confirm_url = reverse("nitrate-activation-confirm", args=["nonexisting-activation-key"])
    response = self.client.get(confirm_url)
    self.assertContains(response, "This key no longer exist in the database")
    self.assertContains(
        response,
        '<a href="{}">Continue</a>'.format(reverse("nitrate-index")),
        html=True,
    )