package org.apache.lucene.analysis.en;
/*
* 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.
*/
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.core.KeywordTokenizer;
import org.apache.lucene.analysis.miscellaneous.KeywordMarkerFilter;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import static org.apache.lucene.analysis.VocabularyAssert.*;
/**
* Test the PorterStemFilter with Martin Porter's test data.
*/
public class TestPorterStemFilter extends BaseTokenStreamTestCase {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName,
Reader reader) {
Tokenizer t = new MockTokenizer(reader, MockTokenizer.KEYWORD, false);
return new TokenStreamComponents(t, new PorterStemFilter(t));
}
};
/**
* Run the stemmer against all strings in voc.txt
* The output should be the same as the string in output.txt
*/
public void testPorterStemFilter() throws Exception {
assertVocabulary(a, getDataFile("porterTestData.zip"), "voc.txt", "output.txt");
}
public void testWithKeywordAttribute() throws IOException {
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 1, true);
set.add("yourselves");
Tokenizer tokenizer = new MockTokenizer(new StringReader("yourselves yours"), MockTokenizer.WHITESPACE, false);
TokenStream filter = new PorterStemFilter(new KeywordMarkerFilter(tokenizer, set));
assertTokenStreamContents(filter, new String[] {"yourselves", "your"});
}
/** blast some random strings through the analyzer */
public void testRandomStrings() throws Exception {
checkRandomData(random(), a, 1000*RANDOM_MULTIPLIER);
}
public void testEmptyTerm() throws IOException {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new KeywordTokenizer(reader);
return new TokenStreamComponents(tokenizer, new PorterStemFilter(tokenizer));
}
};
checkOneTermReuse(a, "", "");
}
}