| /* |
| * 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.icu; |
| |
| |
| import java.io.IOException; |
| |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.analysis.BaseTokenStreamTestCase; |
| import org.apache.lucene.analysis.MockTokenizer; |
| import org.apache.lucene.analysis.Tokenizer; |
| import org.apache.lucene.analysis.core.KeywordTokenizer; |
| |
| import com.ibm.icu.text.Normalizer2; |
| |
| /** |
| * Tests the ICUNormalizer2Filter |
| */ |
| public class TestICUNormalizer2Filter extends BaseTokenStreamTestCase { |
| Analyzer a; |
| |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| a = new Analyzer() { |
| @Override |
| public TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| return new TokenStreamComponents(tokenizer, new ICUNormalizer2Filter(tokenizer)); |
| } |
| }; |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| a.close(); |
| super.tearDown(); |
| } |
| |
| public void testDefaults() throws IOException { |
| // case folding |
| assertAnalyzesTo(a, "This is a test", new String[] { "this", "is", "a", "test" }); |
| |
| // case folding |
| assertAnalyzesTo(a, "Ruß", new String[] { "russ" }); |
| |
| // case folding |
| assertAnalyzesTo(a, "ΜΆΪΟΣ", new String[] { "μάϊοσ" }); |
| assertAnalyzesTo(a, "Μάϊος", new String[] { "μάϊοσ" }); |
| |
| // supplementary case folding |
| assertAnalyzesTo(a, "𐐖", new String[] { "𐐾" }); |
| |
| // normalization |
| assertAnalyzesTo(a, "ﴳﴺﰧ", new String[] { "طمطمطم" }); |
| |
| // removal of default ignorables |
| assertAnalyzesTo(a, "क्ष", new String[] { "क्ष" }); |
| } |
| |
| public void testAlternate() throws IOException { |
| Analyzer a = new Analyzer() { |
| @Override |
| public TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new MockTokenizer(MockTokenizer.WHITESPACE, false); |
| return new TokenStreamComponents(tokenizer, new ICUNormalizer2Filter( |
| tokenizer, |
| /* specify nfc with decompose to get nfd */ |
| Normalizer2.getInstance(null, "nfc", Normalizer2.Mode.DECOMPOSE))); |
| } |
| }; |
| |
| // decompose EAcute into E + combining Acute |
| assertAnalyzesTo(a, "\u00E9", new String[] { "\u0065\u0301" }); |
| a.close(); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| public void testRandomStrings() throws Exception { |
| checkRandomData(random(), a, 1000*RANDOM_MULTIPLIER); |
| } |
| |
| public void testEmptyTerm() throws IOException { |
| Analyzer a = new Analyzer() { |
| @Override |
| protected TokenStreamComponents createComponents(String fieldName) { |
| Tokenizer tokenizer = new KeywordTokenizer(); |
| return new TokenStreamComponents(tokenizer, new ICUNormalizer2Filter(tokenizer)); |
| } |
| }; |
| checkOneTerm(a, "", ""); |
| a.close(); |
| } |
| } |