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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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package org.apache.lucene.analysis;
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import java.io.StringReader;
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import org.apache.lucene.util.LuceneTestCase;
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public class TestCharFilter extends LuceneTestCase {
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public void testCharFilter1() throws Exception {
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CharStream cs = new CharFilter1( CharReader.get( new StringReader("") ) );
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assertEquals( "corrected offset is invalid", 1, cs.correctOffset( 0 ) );
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public void testCharFilter2() throws Exception {
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CharStream cs = new CharFilter2( CharReader.get( new StringReader("") ) );
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assertEquals( "corrected offset is invalid", 2, cs.correctOffset( 0 ) );
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public void testCharFilter12() throws Exception {
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CharStream cs = new CharFilter2( new CharFilter1( CharReader.get( new StringReader("") ) ) );
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assertEquals( "corrected offset is invalid", 3, cs.correctOffset( 0 ) );
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public void testCharFilter11() throws Exception {
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CharStream cs = new CharFilter1( new CharFilter1( CharReader.get( new StringReader("") ) ) );
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assertEquals( "corrected offset is invalid", 2, cs.correctOffset( 0 ) );
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static class CharFilter1 extends CharFilter {
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protected CharFilter1(CharStream in) {
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protected int correct(int currentOff) {
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return currentOff + 1;
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static class CharFilter2 extends CharFilter {
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protected CharFilter2(CharStream in) {
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protected int correct(int currentOff) {
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return currentOff + 2;