package org.apache.lucene.analysis.miscellaneous;
/*
* 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.io.StringReader;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.BaseTokenStreamTestCase;
import org.apache.lucene.analysis.MockTokenizer;
import org.apache.lucene.analysis.TokenStream;
import org.apache.lucene.analysis.Tokenizer;
import org.apache.lucene.analysis.core.KeywordTokenizer;
import org.apache.lucene.util._TestUtil;
public class TestCodepointCountFilter extends BaseTokenStreamTestCase {
public void testFilterWithPosIncr() throws Exception {
TokenStream stream = new MockTokenizer(
new StringReader("short toolong evenmuchlongertext a ab toolong foo"), MockTokenizer.WHITESPACE, false);
CodepointCountFilter filter = new CodepointCountFilter(TEST_VERSION_CURRENT, stream, 2, 6);
assertTokenStreamContents(filter,
new String[]{"short", "ab", "foo"},
new int[]{1, 4, 2}
);
}
public void testEmptyTerm() throws IOException {
Analyzer a = new Analyzer() {
@Override
protected TokenStreamComponents createComponents(String fieldName, Reader reader) {
Tokenizer tokenizer = new KeywordTokenizer(reader);
return new TokenStreamComponents(tokenizer, new CodepointCountFilter(TEST_VERSION_CURRENT, tokenizer, 0, 5));
}
};
checkOneTerm(a, "", "");
}
public void testRandomStrings() throws IOException {
for (int i = 0; i < 10000; i++) {
String text = _TestUtil.randomUnicodeString(random(), 100);
int min = _TestUtil.nextInt(random(), 0, 100);
int max = _TestUtil.nextInt(random(), 0, 100);
int count = text.codePointCount(0, text.length());
boolean expected = count >= min && count <= max;
TokenStream stream = new KeywordTokenizer(new StringReader(text));
stream = new CodepointCountFilter(TEST_VERSION_CURRENT, stream, min, max);
stream.reset();
assertEquals(expected, stream.incrementToken());
stream.end();
stream.close();
}
}
}