@Test
public void testAuthenticateNoLoginModules() throws Exception {

        Headers respHeader = new Headers();
        HttpExchange ex = createHttpExchange(respHeader, "Authorization", "Basic cm9sYW5kOnMhY3IhdA==");
        Authenticator.Result result = auth.authenticate(ex);
        assertEquals(((Authenticator.Failure) result).getResponseCode(), 401);
}