| /* |
| * 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. |
| */ |
| package org.apache.jackrabbit.oak.plugins.index.lucene.util.fv; |
| |
| import java.io.StringReader; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.core.WhitespaceTokenizer; |
| import org.apache.lucene.analysis.tokenattributes.CharTermAttribute; |
| import org.apache.lucene.util.Version; |
| import org.junit.Test; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| /** |
| * Tests for {@link TruncateTokenFilter} |
| */ |
| public class TruncateTokenFilterTest { |
| |
| @Test |
| public void testFiltering() throws Exception { |
| TokenStream stream = new WhitespaceTokenizer(Version.LUCENE_47, new StringReader("0.10 0.20 0.30 0.40")); |
| TruncateTokenFilter filter = new TruncateTokenFilter(stream, 3); |
| filter.reset(); |
| List<String> expectedTokens = new LinkedList<>(); |
| expectedTokens.add("0.1"); |
| expectedTokens.add("0.2"); |
| expectedTokens.add("0.3"); |
| expectedTokens.add("0.4"); |
| int i = 0; |
| while (filter.incrementToken()) { |
| CharTermAttribute charTermAttribute = filter.getAttribute(CharTermAttribute.class); |
| String token = new String(charTermAttribute.buffer(), 0, charTermAttribute.length()); |
| assertEquals(expectedTokens.get(i), token); |
| i++; |
| } |
| filter.close(); |
| } |
| |
| } |