package org.apache.lucene.analysis.pt;
/**
* 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 org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.LowerCaseFilter;
import org.apache.lucene.analysis.standard.StandardTokenizer;
import org.apache.lucene.analysis.util.ReusableAnalyzerBase;
import static org.apache.lucene.analysis.util.VocabularyAssert.*;
/**
* Simple tests for {@link PortugueseLightStemFilter}
*/
public class TestPortugueseLightStemFilter extends BaseTokenStreamTestCase {
private Analyzer analyzer = new ReusableAnalyzerBase() {
@Override
protected TokenStreamComponents createComponents(String fieldName,
Reader reader) {
Tokenizer source = new StandardTokenizer(TEST_VERSION_CURRENT, reader);
TokenStream result = new LowerCaseFilter(TEST_VERSION_CURRENT, source);
return new TokenStreamComponents(source, new PortugueseLightStemFilter(result));
}
};
/**
* Test the example from the paper "Assessing the impact of stemming accuracy
* on information retrieval"
*/
public void testExamples() throws IOException {
assertAnalyzesTo(
analyzer,
"O debate político, pelo menos o que vem a público, parece, de modo nada "
+ "surpreendente, restrito a temas menores. Mas há, evidentemente, "
+ "grandes questões em jogo nas eleições que se aproximam.",
new String[] {
"o", "debat", "politic", "pelo", "meno", "o", "que", "vem", "a",
"public", "parec", "de", "modo", "nada", "surpreendent", "restrit",
"a", "tema", "menor", "mas", "há", "evident", "grand", "questa",
"em", "jogo", "nas", "eleica", "que", "se", "aproximam"
});
}
/**
* Test examples from the c implementation
*/
public void testMoreExamples() throws IOException {
checkOneTerm(analyzer, "doutores", "doutor");
checkOneTerm(analyzer, "doutor", "doutor");
checkOneTerm(analyzer, "homens", "homem");
checkOneTerm(analyzer, "homem", "homem");
checkOneTerm(analyzer, "papéis", "papel");
checkOneTerm(analyzer, "papel", "papel");
checkOneTerm(analyzer, "normais", "normal");
checkOneTerm(analyzer, "normal", "normal");
checkOneTerm(analyzer, "lencóis", "lencol");
checkOneTerm(analyzer, "lencol", "lencol");
checkOneTerm(analyzer, "barris", "barril");
checkOneTerm(analyzer, "barril", "barril");
checkOneTerm(analyzer, "botões", "bota");
checkOneTerm(analyzer, "botão", "bota");
}
/** Test against a vocabulary from the reference impl */
public void testVocabulary() throws IOException {
assertVocabulary(analyzer, getDataFile("ptlighttestdata.zip"), "ptlight.txt");
}
}