@Test
    void verifyAuthenticationFails() throws Throwable {
        val server = getRadiusServer();
        val response = server.authenticate("casuser", "badpsw");
        assertNull(response);
    }
This is {@link AbstractRadiusServerTests}.

@author Misagh Moayyed
@since 6.0.0
support/cas-server-support-radius-core/src/test/java/org/apereo/cas/adaptors/radius/AbstractRadiusServerTests.java