assertEquals(1, reader.numDocs());
Row row2 = new Row(row);
List<Column> cols = new ArrayList<Column>();
cols.add(new Column("n", "v"));
row2.addToRecords(new Record("1", "fam", cols));
_action.replaceRow(row2);
_action.performMutate(getSearcher(reader, directory), writer);
reader = commitAndReopen(reader, writer);
assertEquals(2, reader.numDocs());