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")); }