@Test
    void verifyAccountNotRegistered() {
        assertFalse(isYubiKeyRegisteredFor("missing-user", null));
    }
This is {@link AbstractYubiKeyAccountRegistryTests}.

@author Timur Duehr
@since 6.0.0
support/cas-server-support-yubikey-core/src/test/java/org/apereo/cas/adaptors/yubikey/AbstractYubiKeyAccountRegistryTests.java