package org.apache.lucene.analysis.cz;
/**
* 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.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.util.CharArraySet;
import org.apache.lucene.util.Version;
/**
* Test the CzechAnalyzer
*
* Before Lucene 3.1, CzechAnalyzer was a StandardAnalyzer with a custom
* stopword list. As of 3.1 it also includes a stemmer.
*
*/
public class TestCzechAnalyzer extends BaseTokenStreamTestCase {
/**
* @deprecated Remove this test when support for 3.0 indexes is no longer needed.
*/
@Deprecated
public void testStopWordLegacy() throws Exception {
assertAnalyzesTo(new CzechAnalyzer(Version.LUCENE_30), "Pokud mluvime o volnem",
new String[] { "mluvime", "volnem" });
}
public void testStopWord() throws Exception {
assertAnalyzesTo(new CzechAnalyzer(TEST_VERSION_CURRENT), "Pokud mluvime o volnem",
new String[] { "mluvim", "voln" });
}
/**
* @deprecated Remove this test when support for 3.0 indexes is no longer needed.
*/
@Deprecated
public void testReusableTokenStreamLegacy() throws Exception {
Analyzer analyzer = new CzechAnalyzer(Version.LUCENE_30);
assertAnalyzesToReuse(analyzer, "Pokud mluvime o volnem", new String[] { "mluvime", "volnem" });
assertAnalyzesToReuse(analyzer, "Česká Republika", new String[] { "česká", "republika" });
}
public void testReusableTokenStream() throws Exception {
Analyzer analyzer = new CzechAnalyzer(TEST_VERSION_CURRENT);
assertAnalyzesToReuse(analyzer, "Pokud mluvime o volnem", new String[] { "mluvim", "voln" });
assertAnalyzesToReuse(analyzer, "Česká Republika", new String[] { "česk", "republik" });
}
/**
* An input stream that always throws IOException for testing.
* @deprecated Remove this class when the loadStopWords method is removed.
*/
@Deprecated
private class UnreliableInputStream extends InputStream {
@Override
public int read() throws IOException {
throw new IOException();
}
}
/**
* The loadStopWords method does not throw IOException on error,
* instead previously it set the stoptable to null (versus empty)
* this would cause a NPE when it is time to create the StopFilter.
* @deprecated Remove this test when the loadStopWords method is removed.
*/
@Deprecated
public void testInvalidStopWordFile() throws Exception {
CzechAnalyzer cz = new CzechAnalyzer(Version.LUCENE_30);
cz.loadStopWords(new UnreliableInputStream(), "UTF-8");
assertAnalyzesTo(cz, "Pokud mluvime o volnem",
new String[] { "pokud", "mluvime", "o", "volnem" });
}
/**
* Test that changes to the stop table via loadStopWords are applied immediately
* when using reusable token streams.
* @deprecated Remove this test when the loadStopWords method is removed.
*/
@Deprecated
public void testStopWordFileReuse() throws Exception {
CzechAnalyzer cz = new CzechAnalyzer(Version.LUCENE_30);
assertAnalyzesToReuse(cz, "Česká Republika",
new String[] { "česká", "republika" });
InputStream stopwords = getClass().getResourceAsStream("customStopWordFile.txt");
cz.loadStopWords(stopwords, "UTF-8");
assertAnalyzesToReuse(cz, "Česká Republika", new String[] { "česká" });
}
public void testWithStemExclusionSet() throws IOException{
CharArraySet set = new CharArraySet(TEST_VERSION_CURRENT, 1, true);
set.add("hole");
CzechAnalyzer cz = new CzechAnalyzer(TEST_VERSION_CURRENT, CharArraySet.EMPTY_SET, set);
assertAnalyzesTo(cz, "hole desek", new String[] {"hole", "desk"});
}
}