package org.apache.lucene.analysis;
/*
* 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.util.Random;
import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
public class TestLookaheadTokenFilter extends BaseTokenStreamTestCase {
public void testRandomStrings() throws Exception {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Random random = random();
Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, random.nextBoolean());
TokenStream output = new MockRandomLookaheadTokenFilter(random, tokenizer);
return new TokenStreamComponents(tokenizer, output);
}
};
checkRandomData(random(), a, 200*RANDOM_MULTIPLIER, 8192);
}
private static class NeverPeeksLookaheadTokenFilter extends LookaheadTokenFilter<LookaheadTokenFilter.Position> {
public NeverPeeksLookaheadTokenFilter(TokenStream input) {
super(input);
}
@Override
public Position newPosition() {
return new Position();
}
@Override
public boolean incrementToken() throws IOException {
return nextToken();
}
}
public void testNeverCallingPeek() throws Exception {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, random().nextBoolean());
TokenStream output = new NeverPeeksLookaheadTokenFilter(tokenizer);
return new TokenStreamComponents(tokenizer, output);
}
};
checkRandomData(random(), a, 200*RANDOM_MULTIPLIER, 8192);
}
}