package org.apache.lucene.search.highlight;
/**
* 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.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.WhitespaceAnalyzer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.util.Version;
public class OffsetLimitTokenFilterTest extends BaseTokenStreamTestCase {
public void testFilter() throws Exception {
// we disable MockTokenizer checks because we will forcefully limit the
// tokenstream and call end() before incrementToken() returns false.
MockTokenizer stream = new MockTokenizer(new StringReader(
"short toolong evenmuchlongertext a ab toolong foo"),
MockTokenizer.WHITESPACE, false);
stream.setEnableChecks(false);
OffsetLimitTokenFilter filter = new OffsetLimitTokenFilter(stream, 10);
assertTokenStreamContents(filter, new String[] {"short", "toolong"});
stream = new MockTokenizer(new StringReader(
"short toolong evenmuchlongertext a ab toolong foo"),
MockTokenizer.WHITESPACE, false);
stream.setEnableChecks(false);
filter = new OffsetLimitTokenFilter(stream, 12);
assertTokenStreamContents(filter, new String[] {"short", "toolong"});
stream = new MockTokenizer(new StringReader(
"short toolong evenmuchlongertext a ab toolong foo"),
MockTokenizer.WHITESPACE, false);
stream.setEnableChecks(false);
filter = new OffsetLimitTokenFilter(stream, 30);
assertTokenStreamContents(filter, new String[] {"short", "toolong",
"evenmuchlongertext"});
// TODO: This is not actually testing reuse! (reusableTokenStream is not implemented)
checkOneTermReuse(new Analyzer() {
@Override
public TokenStream tokenStream(String fieldName, Reader reader) {
MockTokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false);
tokenizer.setEnableChecks(false);
return new OffsetLimitTokenFilter(tokenizer, 10);
}
}, "llenges", "llenges");
}
}