assertNull(executeBasicWebInteraction(cookie, DomainOverview.PATH, "delete=" + d0.getId(), 0));
// double delete
assertNotNull(executeBasicWebInteraction(cookie, DomainOverview.PATH, "delete=" + d0.getId(), 0));
// re-add
assertNull(addDomain(cookie, domain));
assertNull(executeBasicWebInteraction(cookie, DomainOverview.PATH, "delete=" + d0.getId(), 0));
// double delete
assertNotNull(executeBasicWebInteraction(cookie, DomainOverview.PATH, "delete=" + d0.getId(), 0));
// re-add
assertNull(addDomain(cookie, domain));