NoteMapMerger merger = new NoteMapMerger(db, null, null);
NoteMap result;
NoteMap map_a1_b = NoteMap.read(reader, sampleTree_a_b);
String noteAContent1 = noteAContent + "change";
RevBlob noteABlob1 = tr.blob(noteAContent1);
map_a1_b.set(noteAId, noteABlob1);
map_a1_b.writeTree(inserter);
NoteMap map_a_b1 = NoteMap.read(reader, sampleTree_a_b);
String noteBContent1 = noteBContent + "change";
RevBlob noteBBlob1 = tr.blob(noteBContent1);
map_a_b1.set(noteBId, noteBBlob1);
map_a_b1.writeTree(inserter);
result = merger.merge(map_a_b, map_a1_b, map_a_b1);
assertEquals(2, countNotes(result));