mk.commit("", "+\"/a\":{}", null, "");
// Commit with empty path and retrieve with root path
String rev = mk.commit("", "-\"/a\"", null, null);
String journalStr = mk.getJournal(rev, rev, "/");
JSONArray array = parseJSONArray(journalStr);
JSONObject entry = getObjectArrayEntry(array, 0);
String expected = "-\"/a\"";
assertPropertyValue(entry, "changes", expected);
mk.commit("", "+\"/b\":{}", null, "");