package org.apache.lucene.analysis.th;
/*
* 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.
*/
import java.io.IOException;
import java.io.Reader;
import java.util.Random;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.KeywordTokenizer;
import org.apache.lucene.analysis.core.StopAnalyzer;
import org.apache.lucene.analysis.tokenattributes.FlagsAttribute;
import org.apache.lucene.analysis.util.CharArraySet;
/**
* Test case for ThaiAnalyzer, modified from TestFrenchAnalyzer
*
*/
public class TestThaiAnalyzer extends BaseTokenStreamTestCase {
@Override
public void setUp() throws Exception {
super.setUp();
assumeTrue("JRE does not support Thai dictionary-based BreakIterator", ThaiWordFilter.DBBI_AVAILABLE);
}
/*
* testcase for offsets
*/
public void testOffsets() throws Exception {
assertAnalyzesTo(new ThaiAnalyzer(TEST_VERSION_CURRENT, CharArraySet.EMPTY_SET), "การที่ได้ต้องแสดงว่างานดี",
new String[] { "การ", "ที่", "ได้", "ต้อง", "แสดง", "ว่า", "งาน", "ดี" },
new int[] { 0, 3, 6, 9, 13, 17, 20, 23 },
new int[] { 3, 6, 9, 13, 17, 20, 23, 25 });
}
public void testStopWords() throws Exception {
assertAnalyzesTo(new ThaiAnalyzer(TEST_VERSION_CURRENT), "การที่ได้ต้องแสดงว่างานดี",
new String[] { "แสดง", "งาน", "ดี" },
new int[] { 13, 20, 23 },
new int[] { 17, 23, 25 },
new int[] { 5, 2, 1 });
}
public void testTokenType() throws Exception {
assertAnalyzesTo(new ThaiAnalyzer(TEST_VERSION_CURRENT, CharArraySet.EMPTY_SET), "การที่ได้ต้องแสดงว่างานดี ๑๒๓",
new String[] { "การ", "ที่", "ได้", "ต้อง", "แสดง", "ว่า", "งาน", "ดี", "๑๒๓" },
new String[] { "<SOUTHEAST_ASIAN>", "<SOUTHEAST_ASIAN>",
"<SOUTHEAST_ASIAN>", "<SOUTHEAST_ASIAN>",
"<SOUTHEAST_ASIAN>", "<SOUTHEAST_ASIAN>",
"<SOUTHEAST_ASIAN>", "<SOUTHEAST_ASIAN>",
"<NUM>" });
}
/*
* Test that position increments are adjusted correctly for stopwords.
*/
// note this test uses stopfilter's stopset
public void testPositionIncrements() throws Exception {
final ThaiAnalyzer analyzer = new ThaiAnalyzer(TEST_VERSION_CURRENT, StopAnalyzer.ENGLISH_STOP_WORDS_SET);
assertAnalyzesTo(analyzer, "การที่ได้ต้อง the แสดงว่างานดี",
new String[] { "การ", "ที่", "ได้", "ต้อง", "แสดง", "ว่า", "งาน", "ดี" },
new int[] { 0, 3, 6, 9, 18, 22, 25, 28 },
new int[] { 3, 6, 9, 13, 22, 25, 28, 30 },
new int[] { 1, 1, 1, 1, 2, 1, 1, 1 });
// case that a stopword is adjacent to thai text, with no whitespace
assertAnalyzesTo(analyzer, "การที่ได้ต้องthe แสดงว่างานดี",
new String[] { "การ", "ที่", "ได้", "ต้อง", "แสดง", "ว่า", "งาน", "ดี" },
new int[] { 0, 3, 6, 9, 17, 21, 24, 27 },
new int[] { 3, 6, 9, 13, 21, 24, 27, 29 },
new int[] { 1, 1, 1, 1, 2, 1, 1, 1 });
}
public void testReusableTokenStream() throws Exception {
ThaiAnalyzer analyzer = new ThaiAnalyzer(TEST_VERSION_CURRENT, CharArraySet.EMPTY_SET);
assertAnalyzesTo(analyzer, "", new String[] {});
assertAnalyzesTo(
analyzer,
"การที่ได้ต้องแสดงว่างานดี",
new String[] { "การ", "ที่", "ได้", "ต้อง", "แสดง", "ว่า", "งาน", "ดี"});
assertAnalyzesTo(
analyzer,
"บริษัทชื่อ XY&Z - คุยกับ xyz@demo.com",
new String[] { "บริษัท", "ชื่อ", "xy", "z", "คุย", "กับ", "xyz", "demo.com" });
}
/** blast some random strings through the analyzer */
public void testRandomStrings() throws Exception {
checkRandomData(random(), new ThaiAnalyzer(TEST_VERSION_CURRENT), 1000*RANDOM_MULTIPLIER);
}
/** blast some random large strings through the analyzer */
public void testRandomHugeStrings() throws Exception {
Random random = random();
checkRandomData(random, new ThaiAnalyzer(TEST_VERSION_CURRENT), 100*RANDOM_MULTIPLIER, 8192);
}
// LUCENE-3044
public void testAttributeReuse() throws Exception {
ThaiAnalyzer analyzer = new ThaiAnalyzer(TEST_VERSION_CURRENT);
// just consume
TokenStream ts = analyzer.tokenStream("dummy", "ภาษาไทย");
assertTokenStreamContents(ts, new String[] { "ภาษา", "ไทย" });
// this consumer adds flagsAtt, which this analyzer does not use.
ts = analyzer.tokenStream("dummy", "ภาษาไทย");
ts.addAttribute(FlagsAttribute.class);
assertTokenStreamContents(ts, new String[] { "ภาษา", "ไทย" });
}
public void testEmptyTerm() throws IOException {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName) {
Tokenizer tokenizer = new KeywordTokenizer();
return new TokenStreamComponents(tokenizer, new ThaiWordFilter(TEST_VERSION_CURRENT, tokenizer));
}
};
checkOneTerm(a, "", "");
}
}