assertNotNull("expecing deletionInfo to be present", serializedDeletionInfo);
assertEquals(
"unexpected serialization format for topLevelDeletion",
"{\"markedForDeleteAt\":0,\"localDeletionTime\":0}",
serializedDeletionInfo.toJSONString());
// check the colums are what we put in
JSONArray cols = (JSONArray) row.get("columns");
assertNotNull("expecing columns to be present", cols);
assertEquals("expecting two columns", 2, cols.size());