@RepeatedTest(2)
    @Transactional(transactionManager = "ticketTransactionManager", readOnly = false)
    void verifyDeleteNonExistingTicket() throws Throwable {
        val ticketGrantingTicketId = TestTicketIdentifiers.generate().ticketGrantingTicketId();
        val addedTicket = ticketRegistry.addTicket(new TicketGrantingTicketImpl(ticketGrantingTicketId,
            CoreAuthenticationTestUtils.getAuthentication(),
            NeverExpiresExpirationPolicy.INSTANCE));
        val ticketId = addedTicket.getId() + "NON-EXISTING-SUFFIX";
        ticketRegistry.deleteTicket(ticketId);
        assertEquals(0, ticketRegistry.getTickets(ticket -> ticket.getId().equals(ticketId)).count());
    }
Exercise block of code in {@link AbstractTicketRegistry#getTicket(String ticketId)} that runs when
the method encounters a {@link Ticket} created in the future.
Adds 10 seconds to creation time to simulate time out of sync so warning will be logged.
core/cas-server-core-tickets/src/test/java/org/apereo/cas/ticket/registry/BaseTicketRegistryTests.java