package org.apache.lucene.analysis.hi;
/**
* 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.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.ReusableAnalyzerBase;
import org.apache.lucene.analysis.TokenFilter;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.KeywordTokenizer;
/**
* Test HindiStemmer
*/
public class TestHindiStemmer extends BaseTokenStreamTestCase {
/**
* Test masc noun inflections
*/
public void testMasculineNouns() throws IOException {
check("लडका", "लडक");
check("लडके", "लडक");
check("लडकों", "लडक");
check("गुरु", "गुर");
check("गुरुओं", "गुर");
check("दोस्त", "दोस्त");
check("दोस्तों", "दोस्त");
}
/**
* Test feminine noun inflections
*/
public void testFeminineNouns() throws IOException {
check("लडकी", "लडक");
check("लडकियों", "लडक");
check("किताब", "किताब");
check("किताबें", "किताब");
check("किताबों", "किताब");
check("आध्यापीका", "आध्यापीक");
check("आध्यापीकाएं", "आध्यापीक");
check("आध्यापीकाओं", "आध्यापीक");
}
/**
* Test some verb forms
*/
public void testVerbs() throws IOException {
check("खाना", "खा");
check("खाता", "खा");
check("खाती", "खा");
check("खा", "खा");
}
/**
* From the paper: since the suffix list for verbs includes AI, awA and anI,
* additional suffixes had to be added to the list for noun/adjectives
* ending with these endings.
*/
public void testExceptions() throws IOException {
check("कठिनाइयां", "कठिन");
check("कठिन", "कठिन");
}
private void check(String input, String output) throws IOException {
Tokenizer tokenizer = new MockTokenizer(new StringReader(input), MockTokenizer.WHITESPACE, false);
TokenFilter tf = new HindiStemFilter(tokenizer);
assertTokenStreamContents(tf, new String[] { output });
}
public void testEmptyTerm() throws IOException {
Analyzer a = new ReusableAnalyzerBase() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new KeywordTokenizer(reader);
return new TokenStreamComponents(tokenizer, new HindiStemFilter(tokenizer));
}
};
checkOneTermReuse(a, "", "");
}
}