public virtual void TestSparse()
{
for (int i = 0; i < 10; i++)
{
int id_start = Random().Next(Ir.MaxDoc - 1);
int id_end = id_start + 1;
Query query = TermRangeQuery.NewStringRange("id", Convert.ToString(id_start), Convert.ToString(id_end), true, true);
Filter expected = new QueryWrapperFilter(query);
Filter actual = new CachingWrapperFilter(expected);
AssertFilterEquals(expected, actual);
}
}