private static RAMDirectory MakeEmptyIndex(int numDeletedDocs)
{
RAMDirectory d = new RAMDirectory();
IndexWriter w = new IndexWriter(d, new WhitespaceAnalyzer(), true, MaxFieldLength.LIMITED);
for (int i = 0; i < numDeletedDocs; i++)
{
w.AddDocument(new Document());
}
w.Commit();
w.DeleteDocuments(new MatchAllDocsQuery());
w.Commit();
if (0 < numDeletedDocs)
{
Assert.IsTrue(w.HasDeletions(), "writer has no deletions");
}
Assert.AreEqual(numDeletedDocs, w.MaxDoc(), "writer is missing some deleted docs");
Assert.AreEqual(0, w.NumDocs(), "writer has non-deleted docs");
w.Close();
IndexReader r = IndexReader.Open(d);
Assert.AreEqual(numDeletedDocs, r.NumDeletedDocs(), "reader has wrong number of deleted docs");
r.Close();
return(d);
}