package org.apache.lucene.analysis.snowball;
/**
* Copyright 2004 The Apache Software Foundation
*
* Licensed 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 org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.util.BaseTokenStreamFactoryTestCase;
import org.apache.lucene.analysis.util.StringMockResourceLoader;
import org.tartarus.snowball.ext.EnglishStemmer;
import java.io.Reader;
import java.io.StringReader;
public class TestSnowballPorterFilterFactory extends BaseTokenStreamFactoryTestCase {
public void test() throws Exception {
String text = "The fledgling banks were counting on a big boom in banking";
EnglishStemmer stemmer = new EnglishStemmer();
String[] test = text.split("\\s");
String[] gold = new String[test.length];
for (int i = 0; i < test.length; i++) {
stemmer.setCurrent(test[i]);
stemmer.stem();
gold[i] = stemmer.getCurrent();
}
Reader reader = new StringReader(text);
TokenStream stream = whitespaceMockTokenizer(reader);
stream = tokenFilterFactory("SnowballPorter", "language", "English").create(stream);
assertTokenStreamContents(stream, gold);
}
/**
* Test the protected words mechanism of SnowballPorterFilterFactory
*/
public void testProtected() throws Exception {
Reader reader = new StringReader("ridding of some stemming");
TokenStream stream = whitespaceMockTokenizer(reader);
stream = tokenFilterFactory("SnowballPorter", TEST_VERSION_CURRENT,
new StringMockResourceLoader("ridding"),
"protected", "protwords.txt",
"language", "English").create(stream);
assertTokenStreamContents(stream, new String[] { "ridding", "of", "some", "stem" });
}
/** Test that bogus arguments result in exception */
public void testBogusArguments() throws Exception {
try {
tokenFilterFactory("SnowballPorter", "bogusArg", "bogusValue");
fail();
} catch (IllegalArgumentException expected) {
assertTrue(expected.getMessage().contains("Unknown parameters"));
}
}
}