public void TestKeepsFirstFilter()
{
DuplicateFilter df = new DuplicateFilter(KEY_FIELD);
df.KeepMode = DuplicateFilter.KM_USE_FIRST_OCCURRENCE;
ScoreDoc[] h = searcher.Search(tq, df, 1000).ScoreDocs;
Assert.IsTrue(h.Length > 0, "Filtered searching should have found some matches");
for (int i = 0; i < h.Length; i++)
{
Document d = searcher.Doc(h[i].Doc);
String url = d.Get(KEY_FIELD);
TermDocs td = reader.TermDocs(new Term(KEY_FIELD, url));
int lastDoc = 0;
td.Next();
lastDoc = td.Doc;
Assert.AreEqual(lastDoc, h[i].Doc, "Duplicate urls should return first doc");
}
}
}