@Test
    void verifyUnknown() throws Throwable {
        val ex = new AuthenticationException(new InvalidLoginLocationException("failure"));
        val event = handler.handle(ex, context);
        assertNotNull(event);
        assertEquals(CasWebflowExceptionCatalog.UNKNOWN, event.getId());
    }
This is {@link DefaultCasWebflowAuthenticationExceptionHandlerTests}.

@author Misagh Moayyed
@since 6.2.0
core/cas-server-core-webflow/src/test/java/org/apereo/cas/web/flow/authentication/DefaultCasWebflowAuthenticationExceptionHandlerTests.java