@Test
    public void testStatistics() throws Exception {
        // Initially stats should be zero
        AuthenticationRateLimiter.RateLimiterStats stats = rateLimiter.getStats();
        assertEquals(0, stats.getTotalBlocked());
        assertEquals(0, stats.getAccountsLocked());
        assertEquals(0, stats.getIpsBlocked());

        // Create some activity
        String username = "statsuser";
        String ip = "192.168.1.10";

            this.ipsBlocked = ipsBlocked;
            this.activeAccounts = activeAccounts;
            this.activeIps = activeIps;
        }

        public long getTotalBlocked() {
            return totalBlocked;
        }

        public long getAccountsLocked() {
            return accountsLocked;
        }

        public long getIpsBlocked() {