| using Lucene.Net.Analysis.TokenAttributes; |
| using Lucene.Net.Analysis.Util; |
| using Lucene.Net.Util; |
| using NUnit.Framework; |
| using System.Collections.Generic; |
| using JCG = J2N.Collections.Generic; |
| |
| namespace Lucene.Net.Analysis.Core |
| { |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| public class TestStopAnalyzer : BaseTokenStreamTestCase |
| { |
| |
| private StopAnalyzer stop = new StopAnalyzer(TEST_VERSION_CURRENT); |
| private ISet<object> inValidTokens = new JCG.HashSet<object>(); |
| |
| public override void SetUp() |
| { |
| base.SetUp(); |
| |
| var it = StopAnalyzer.ENGLISH_STOP_WORDS_SET.GetEnumerator(); |
| while (it.MoveNext()) |
| { |
| inValidTokens.Add(it.Current); |
| } |
| } |
| |
| [Test] |
| public virtual void TestDefaults() |
| { |
| assertTrue(stop != null); |
| TokenStream stream = stop.GetTokenStream("test", "This is a test of the english stop analyzer"); |
| try |
| { |
| assertTrue(stream != null); |
| ICharTermAttribute termAtt = stream.GetAttribute<ICharTermAttribute>(); |
| stream.Reset(); |
| |
| while (stream.IncrementToken()) |
| { |
| assertFalse(inValidTokens.Contains(termAtt.ToString())); |
| } |
| stream.End(); |
| } |
| finally |
| { |
| IOUtils.DisposeWhileHandlingException(stream); |
| } |
| } |
| |
| [Test] |
| public virtual void TestStopList() |
| { |
| CharArraySet stopWordsSet = new CharArraySet(TEST_VERSION_CURRENT, new string[] { "good", "test", "analyzer" }, false); |
| StopAnalyzer newStop = new StopAnalyzer(TEST_VERSION_CURRENT, stopWordsSet); |
| TokenStream stream = newStop.GetTokenStream("test", "This is a good test of the english stop analyzer"); |
| try |
| { |
| assertNotNull(stream); |
| ICharTermAttribute termAtt = stream.GetAttribute<ICharTermAttribute>(); |
| |
| stream.Reset(); |
| while (stream.IncrementToken()) |
| { |
| string text = termAtt.ToString(); |
| assertFalse(stopWordsSet.contains(text)); |
| } |
| stream.End(); |
| } |
| finally |
| { |
| IOUtils.DisposeWhileHandlingException(stream); |
| } |
| } |
| |
| [Test] |
| public virtual void TestStopListPositions() |
| { |
| CharArraySet stopWordsSet = new CharArraySet(TEST_VERSION_CURRENT, new string[] { "good", "test", "analyzer" }, false); |
| StopAnalyzer newStop = new StopAnalyzer(TEST_VERSION_CURRENT, stopWordsSet); |
| string s = "This is a good test of the english stop analyzer with positions"; |
| int[] expectedIncr = new int[] { 1, 1, 1, 3, 1, 1, 1, 2, 1 }; |
| TokenStream stream = newStop.GetTokenStream("test", s); |
| try |
| { |
| assertNotNull(stream); |
| int i = 0; |
| ICharTermAttribute termAtt = stream.GetAttribute<ICharTermAttribute>(); |
| IPositionIncrementAttribute posIncrAtt = stream.AddAttribute<IPositionIncrementAttribute>(); |
| |
| stream.Reset(); |
| while (stream.IncrementToken()) |
| { |
| string text = termAtt.ToString(); |
| assertFalse(stopWordsSet.contains(text)); |
| assertEquals(expectedIncr[i++], posIncrAtt.PositionIncrement); |
| } |
| stream.End(); |
| } |
| finally |
| { |
| IOUtils.DisposeWhileHandlingException(stream); |
| } |
| } |
| } |
| } |