/** Tests sorting on type string */
public void testString() throws IOException {
Directory dir = newDirectory();
RandomIndexWriter writer = new RandomIndexWriter(random(), dir);
Document doc = new Document();
doc.add(new SortedDocValuesField("value", new BytesRef("foo")));
doc.add(newStringField("value", "foo", Field.Store.YES));
writer.addDocument(doc);
doc = new Document();
doc.add(new SortedDocValuesField("value", new BytesRef("bar")));
doc.add(newStringField("value", "bar", Field.Store.YES));
writer.addDocument(doc);
IndexReader ir = writer.getReader();
writer.close();