SearchResult.Digest digest =
new Digest(title, "", WAVE_ID.serialise(), ImmutableList.of(PARTICIPANT.getAddress(),
OTHER_PARTICIPANT.getAddress()), -1L, -1L, 1, 1);
String query = "in:inbox";
SearchResult searchResult = new SearchResult(query);
searchResult.addDigest(digest);
when(searchProvider.search(USER, query, 0, 10)).thenReturn(searchResult);
service.execute(operation, context, USER);
verify(context).constructResponse(
eq(operation),