@Test
    public void testIsAddressInAnyOfIpv6NonSplitEmptySets()
    {
        // Setup test fixture.
        final Ipv6 needle = Ipv6.of("91ed:ffff:8948:c0a3:1:dc9e:bed9:0");
        final Set<String> addressesAndRanges = new HashSet<>();

        // Execute system under test.
        final boolean result = IpUtils.isAddressInAnyOf(needle, addressesAndRanges);

        // Verify results.
        assertFalse(result);
    }
Asserts that {@link IpUtils#isAddressInAnyOf(Ipv6, Set)} does not find the provided address in empty
sets of addresses and ranges.
xmppserver/src/test/java/org/jivesoftware/util/IpUtilsTest.java