public virtual void TestFieldNames()
{
Directory dir1 = GetDir1();
Directory dir2 = GetDir2();
ParallelReader pr = new ParallelReader();
pr.Add(IndexReader.Open(dir1, false));
pr.Add(IndexReader.Open(dir2, false));
System.Collections.Generic.ICollection <string> fieldNames = pr.GetFieldNames(IndexReader.FieldOption.ALL);
Assert.AreEqual(4, fieldNames.Count);
Assert.IsTrue(CollectionsHelper.Contains(fieldNames, "f1"));
Assert.IsTrue(CollectionsHelper.Contains(fieldNames, "f2"));
Assert.IsTrue(CollectionsHelper.Contains(fieldNames, "f3"));
Assert.IsTrue(CollectionsHelper.Contains(fieldNames, "f4"));
}
