| /* |
| * 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.lucene.analysis.miscellaneous; |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.CannedTokenStream; |
| import org.apache.lucene.analysis.MockTokenizer; |
| import org.apache.lucene.analysis.Token; |
| import org.apache.lucene.analysis.TokenStream; |
| import org.apache.lucene.analysis.Tokenizer; |
| import org.apache.lucene.analysis.core.KeywordTokenizer; |
| |
| /** |
| */ |
| public class TestTrimFilter extends BaseTokenStreamTestCase { |
| |
| public void testTrim() throws Exception { |
| char[] a = " a ".toCharArray(); |
| char[] b = "b ".toCharArray(); |
| char[] ccc = "cCc".toCharArray(); |
| char[] whitespace = " ".toCharArray(); |
| char[] empty = "".toCharArray(); |
| |
| TokenStream ts = new CannedTokenStream(new Token(new String(a, 0, a.length), 1, 5), |
| new Token(new String(b, 0, b.length), 6, 10), |
| new Token(new String(ccc, 0, ccc.length), 11, 15), |
| new Token(new String(whitespace, 0, whitespace.length), 16, 20), |
| new Token(new String(empty, 0, empty.length), 21, 21)); |
| ts = new TrimFilter(ts); |
| |
| assertTokenStreamContents(ts, new String[] { "a", "b", "cCc", "", ""}); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| public void testRandomStrings() throws Exception { |
| Analyzer a = new Analyzer() { |
| |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.KEYWORD, false); |
| return new TokenStreamComponents(tokenizer, new TrimFilter(tokenizer)); |
| } |
| }; |
| checkRandomData(random(), a, 200 * RANDOM_MULTIPLIER); |
| a.close(); |
| } |
| |
| public void testEmptyTerm() throws IOException { |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new KeywordTokenizer(); |
| return new TokenStreamComponents(tokenizer, new TrimFilter(tokenizer)); |
| } |
| }; |
| checkOneTerm(a, "", ""); |
| a.close(); |
| } |
| } |