| // Lucene version compatibility level < 7.1.0 |
| using ICU4N.Text; |
| using Lucene.Net.Analysis.Core; |
| using NUnit.Framework; |
| using System.IO; |
| |
| namespace Lucene.Net.Analysis.Icu |
| { |
| /* |
| * 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. |
| */ |
| |
| /// <summary> |
| /// Test the <see cref="ICUTransformFilter"/> with some basic examples. |
| /// </summary> |
| public class TestICUTransformFilter : BaseTokenStreamTestCase |
| { |
| [Test] |
| public void TestBasicFunctionality() |
| { |
| CheckToken(Transliterator.GetInstance("Traditional-Simplified"), |
| "簡化字", "简化字"); |
| CheckToken(Transliterator.GetInstance("Katakana-Hiragana"), |
| "ヒラガナ", "ひらがな"); |
| CheckToken(Transliterator.GetInstance("Fullwidth-Halfwidth"), |
| "アルアノリウ", "アルアノリウ"); |
| CheckToken(Transliterator.GetInstance("Any-Latin"), |
| "Αλφαβητικός Κατάλογος", "Alphabētikós Katálogos"); |
| CheckToken(Transliterator.GetInstance("NFD; [:Nonspacing Mark:] Remove"), |
| "Alphabētikós Katálogos", "Alphabetikos Katalogos"); |
| CheckToken(Transliterator.GetInstance("Han-Latin"), |
| "中国", "zhōng guó"); |
| } |
| [Test] |
| public void TestCustomFunctionality() |
| { |
| string rules = "a > b; b > c;"; // convert a's to b's and b's to c's |
| CheckToken(Transliterator.CreateFromRules("test", rules, Transliterator.Forward), "abacadaba", "bcbcbdbcb"); |
| } |
| [Test] |
| public void TestCustomFunctionality2() |
| { |
| string rules = "c { a > b; a > d;"; // convert a's to b's and b's to c's |
| CheckToken(Transliterator.CreateFromRules("test", rules, Transliterator.Forward), "caa", "cbd"); |
| } |
| [Test] |
| public void TestOptimizer() |
| { |
| string rules = "a > b; b > c;"; // convert a's to b's and b's to c's |
| Transliterator custom = Transliterator.CreateFromRules("test", rules, Transliterator.Forward); |
| assertTrue(custom.Filter == null); |
| new ICUTransformFilter(new KeywordTokenizer(new StringReader("")), custom); |
| assertTrue(custom.Filter.Equals(new UnicodeSet("[ab]"))); |
| } |
| [Test] |
| public void TestOptimizer2() |
| { |
| CheckToken(Transliterator.GetInstance("Traditional-Simplified; CaseFold"), |
| "ABCDE", "abcde"); |
| } |
| [Test] |
| public void TestOptimizerSurrogate() |
| { |
| string rules = "\\U00020087 > x;"; // convert CJK UNIFIED IDEOGRAPH-20087 to an x |
| Transliterator custom = Transliterator.CreateFromRules("test", rules, Transliterator.Forward); |
| assertTrue(custom.Filter == null); |
| new ICUTransformFilter(new KeywordTokenizer(new StringReader("")), custom); |
| assertTrue(custom.Filter.Equals(new UnicodeSet("[\\U00020087]"))); |
| } |
| |
| private void CheckToken(Transliterator transform, string input, string expected) |
| { |
| TokenStream ts = new ICUTransformFilter(new KeywordTokenizer((new StringReader(input))), transform); |
| AssertTokenStreamContents(ts, new string[] { expected }); |
| } |
| |
| /** blast some random strings through the analyzer */ |
| [Test] |
| public void TestRandomStrings() |
| { |
| Transliterator transform = Transliterator.GetInstance("Any-Latin"); |
| using Analyzer a = Analyzer.NewAnonymous(createComponents: (fieldName, reader) => |
| { |
| Tokenizer tokenizer = new MockTokenizer(reader, MockTokenizer.WHITESPACE, false); |
| return new TokenStreamComponents(tokenizer, new ICUTransformFilter(tokenizer, transform)); |
| }); |
| CheckRandomData(Random, a, 1000 * RandomMultiplier); |
| } |
| |
| [Test] |
| public void TestEmptyTerm() |
| { |
| using Analyzer a = Analyzer.NewAnonymous(createComponents: (fieldName, reader) => |
| { |
| Tokenizer tokenizer = new KeywordTokenizer(reader); |
| return new TokenStreamComponents(tokenizer, new ICUTransformFilter(tokenizer, Transliterator.GetInstance("Any-Latin"))); |
| }); |
| CheckOneTerm(a, "", ""); |
| } |
| } |
| } |