def METHOD_NAME(self):
    response = self.client.get("/forbidden")
    self.assert_403(response)
    self.assertEqual("text/html; charset=utf-8", response.content_type)
    self.assert_template_used("errors/403.html")
    context_msg = self.get_context_variable("message")
    expected_msg = "<p>%s</p>" % ERROR_MSG
    self.assertEqual(expected_msg, context_msg)