@Test
    void verifyOperation() {
        val chain = new RegisteredServiceChainingAttributeFilter();
        chain.getFilters().add(new RegisteredServiceRegexAttributeFilter(RegexUtils.MATCH_NOTHING_PATTERN.pattern()));
        assertTrue(chain.filter(CoreAuthenticationTestUtils.getAttributes()).isEmpty());
    }
This is {@link RegisteredServiceChainingAttributeFilterTests}.

@author Misagh Moayyed
@since 6.2.0
core/cas-server-core-services/src/test/java/org/apereo/cas/services/support/RegisteredServiceChainingAttributeFilterTests.java