1 package org.apache.lucene.analysis.en;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
20 import java.io.IOException;
21 import java.io.Reader;
23 import org.apache.lucene.analysis.Analyzer;
24 import org.apache.lucene.analysis.BaseTokenStreamTestCase;
25 import org.apache.lucene.analysis.MockTokenizer;
26 import org.apache.lucene.analysis.Tokenizer;
27 import org.apache.lucene.analysis.ReusableAnalyzerBase;
30 * Simple tests for {@link EnglishMinimalStemFilter}
32 public class TestEnglishMinimalStemFilter extends BaseTokenStreamTestCase {
33 private Analyzer analyzer = new ReusableAnalyzerBase() {
35 protected TokenStreamComponents createComponents(String fieldName,
37 Tokenizer source = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
38 return new TokenStreamComponents(source, new EnglishMinimalStemFilter(source));
42 /** Test some examples from various papers about this technique */
43 public void testExamples() throws IOException {
44 checkOneTerm(analyzer, "queries", "query");
45 checkOneTerm(analyzer, "phrases", "phrase");
46 checkOneTerm(analyzer, "corpus", "corpus");
47 checkOneTerm(analyzer, "stress", "stress");
48 checkOneTerm(analyzer, "kings", "king");
49 checkOneTerm(analyzer, "panels", "panel");
50 checkOneTerm(analyzer, "aerodynamics", "aerodynamic");
51 checkOneTerm(analyzer, "congress", "congress");
52 checkOneTerm(analyzer, "serious", "serious");
55 /** blast some random strings through the analyzer */
56 public void testRandomStrings() throws Exception {
57 checkRandomData(random, analyzer, 10000*RANDOM_MULTIPLIER);