| /* |
| * 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.iotdb.tsfile.encoding.decoder; |
| |
| import org.apache.iotdb.tsfile.encoding.encoder.Encoder; |
| import org.apache.iotdb.tsfile.encoding.encoder.LongZigzagEncoder; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Random; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class LongZigzagDecoderTest { |
| private static final Logger logger = LoggerFactory.getLogger(LongZigzagDecoderTest.class); |
| private List<Long> longList; |
| private Random rand = new Random(); |
| private List<Long> randomLongList; |
| |
| @Before |
| public void setUp() { |
| longList = new ArrayList<>(); |
| int int_num = 10000; |
| randomLongList = new ArrayList<>(); |
| for (int i = 0; i < int_num; i++) { |
| longList.add((long) (i + ((long) 1 << 31))); |
| } |
| for (int i = 0; i < int_num; i++) { |
| randomLongList.add(rand.nextLong()); |
| } |
| } |
| |
| @After |
| public void tearDown() { |
| randomLongList.clear(); |
| longList.clear(); |
| } |
| |
| @Test |
| public void testZigzagReadLong() throws Exception { |
| for (int i = 1; i < 10; i++) { |
| testLong(longList, false, i); |
| testLong(randomLongList, false, i); |
| } |
| } |
| |
| private void testLong(List<Long> list, boolean isDebug, int repeatCount) throws Exception { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| Encoder encoder = new LongZigzagEncoder(); |
| for (int i = 0; i < repeatCount; i++) { |
| for (long value : list) { |
| encoder.encode(value, baos); |
| } |
| encoder.flush(baos); |
| } |
| |
| ByteBuffer bais = ByteBuffer.wrap(baos.toByteArray()); |
| Decoder decoder = new LongZigzagDecoder(); |
| for (int i = 0; i < repeatCount; i++) { |
| for (long value : list) { |
| long value_ = decoder.readLong(bais); |
| if (isDebug) { |
| logger.debug("{} // {}", value_, value); |
| } |
| assertEquals(value, value_); |
| } |
| } |
| } |
| } |