| using Lucene.Net.Analysis.Core; |
| using Lucene.Net.Analysis.Miscellaneous; |
| using Lucene.Net.Analysis.Util; |
| using NUnit.Framework; |
| using System.IO; |
| |
| namespace Lucene.Net.Analysis.De |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Simple tests for <seealso cref="GermanMinimalStemFilter"/> |
| /// </summary> |
| public class TestGermanMinimalStemFilter : BaseTokenStreamTestCase |
| { |
| private Analyzer analyzer = new AnalyzerAnonymousInnerClassHelper(); |
| |
| private class AnalyzerAnonymousInnerClassHelper : Analyzer |
| { |
| public AnalyzerAnonymousInnerClassHelper() |
| { |
| } |
| |
| protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader) |
| { |
| Tokenizer source = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false); |
| return new TokenStreamComponents(source, new GermanMinimalStemFilter(source)); |
| } |
| } |
| |
| /// <summary> |
| /// Test some examples from the paper </summary> |
| [Test] |
| public virtual void TestExamples() |
| { |
| CheckOneTerm(analyzer, "sängerinnen", "sangerin"); |
| CheckOneTerm(analyzer, "frauen", "frau"); |
| CheckOneTerm(analyzer, "kenntnisse", "kenntnis"); |
| CheckOneTerm(analyzer, "staates", "staat"); |
| CheckOneTerm(analyzer, "bilder", "bild"); |
| CheckOneTerm(analyzer, "boote", "boot"); |
| CheckOneTerm(analyzer, "götter", "gott"); |
| CheckOneTerm(analyzer, "äpfel", "apfel"); |
| } |
| |
| [Test] |
| public virtual void TestKeyword() |
| { |
| CharArraySet exclusionSet = new CharArraySet(TEST_VERSION_CURRENT, AsSet("sängerinnen"), false); |
| Analyzer a = new AnalyzerAnonymousInnerClassHelper2(this, exclusionSet); |
| CheckOneTerm(a, "sängerinnen", "sängerinnen"); |
| } |
| |
| private class AnalyzerAnonymousInnerClassHelper2 : Analyzer |
| { |
| private readonly TestGermanMinimalStemFilter outerInstance; |
| |
| private CharArraySet exclusionSet; |
| |
| public AnalyzerAnonymousInnerClassHelper2(TestGermanMinimalStemFilter outerInstance, CharArraySet exclusionSet) |
| { |
| this.outerInstance = outerInstance; |
| this.exclusionSet = exclusionSet; |
| } |
| |
| protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader) |
| { |
| Tokenizer source = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false); |
| TokenStream sink = new SetKeywordMarkerFilter(source, exclusionSet); |
| return new TokenStreamComponents(source, new GermanMinimalStemFilter(sink)); |
| } |
| } |
| |
| /// <summary> |
| /// Test against a vocabulary from the reference impl </summary> |
| [Test] |
| public virtual void TestVocabulary() |
| { |
| VocabularyAssert.AssertVocabulary(analyzer, GetDataFile("deminimaltestdata.zip"), "deminimal.txt"); |
| } |
| |
| /// <summary> |
| /// blast some random strings through the analyzer </summary> |
| [Test] |
| public virtual void TestRandomStrings() |
| { |
| CheckRandomData(Random, analyzer, 1000 * RandomMultiplier); |
| } |
| |
| [Test] |
| public virtual void TestEmptyTerm() |
| { |
| Analyzer a = new AnalyzerAnonymousInnerClassHelper3(this); |
| CheckOneTerm(a, "", ""); |
| } |
| |
| private class AnalyzerAnonymousInnerClassHelper3 : Analyzer |
| { |
| private readonly TestGermanMinimalStemFilter outerInstance; |
| |
| public AnalyzerAnonymousInnerClassHelper3(TestGermanMinimalStemFilter outerInstance) |
| { |
| this.outerInstance = outerInstance; |
| } |
| |
| protected internal override TokenStreamComponents CreateComponents(string fieldName, TextReader reader) |
| { |
| Tokenizer tokenizer = new KeywordTokenizer(reader); |
| return new TokenStreamComponents(tokenizer, new GermanMinimalStemFilter(tokenizer)); |
| } |
| } |
| } |
| } |