### Question:
AuthzHelper { public static boolean isMemberExpired(Timestamp expiration, long currentTime) { return (expiration != null && expiration.millis() < currentTime); }  static void removeRoleMembers(List<RoleMember> originalRoleMembers, List<RoleMember> removeRoleMembers); static void removeGroupMembers(List<GroupMember> originalGroupMembers, List<GroupMember> removeGroupMembers); static boolean isMemberDisabled(Integer systemDisabled); static boolean isMemberExpired(Timestamp expiration, long currentTime); static boolean shouldSkipGroupMember(GroupMember member, long currentTime); static boolean isMemberOfGroup(List<GroupMember> groupMembers, final String member); static boolean checkGroupMemberValidity(List<GroupMember> groupMembers, final String member); static boolean memberNameMatch(final String memberName, final  String matchName); static boolean shouldRunDelegatedTrustCheck(final String trust, final String trustDomain); static String retrieveResourceDomain(String resource, String op, String trustDomain); static String extractResourceDomainName(final String resource); static boolean authorityAuthorizationAllowed(Principal principal); static boolean checkRoleMemberValidity(List<RoleMember> roleMembers, final String member,
                                                  GroupMembersFetcher groupMembersFetcher); static boolean isMemberOfRole(Role role, final String member, GroupMembersFetcher groupMembersFetcher); static boolean assumeRoleResourceMatch(String roleName, Assertion assertion); static boolean matchDelegatedTrustPolicy(Policy policy, final String roleName, final String roleMember,
                                                    List<Role> roles, GroupMembersFetcher groupMembersFetcher); static boolean matchDelegatedTrustAssertion(Assertion assertion, final String roleName, final String roleMember,
                                                       List<Role> roles, GroupMembersFetcher groupMembersFetcher);  }### Answer:
@Test public void testIsExpiredMember() { assertFalse(AuthzHelper.isMemberExpired(null, 0)); assertFalse(AuthzHelper.isMemberExpired(Timestamp.fromCurrentTime(), System.currentTimeMillis() - 10000)); assertTrue(AuthzHelper.isMemberExpired(Timestamp.fromCurrentTime(), System.currentTimeMillis() + 10000)); }