| /* |
| * 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.regular; |
| |
| import org.apache.iotdb.tsfile.encoding.decoder.RegularDataDecoder; |
| import org.apache.iotdb.tsfile.encoding.encoder.RegularDataEncoder; |
| |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class RegularDataEncoderIntegerTest { |
| |
| private static int ROW_NUM; |
| ByteArrayOutputStream out; |
| private RegularDataEncoder regularDataEncoder; |
| private RegularDataDecoder regularDataDecoder; |
| private ByteBuffer buffer; |
| |
| @Before |
| public void test() { |
| regularDataEncoder = new RegularDataEncoder.IntRegularEncoder(); |
| regularDataDecoder = new RegularDataDecoder.IntRegularDecoder(); |
| } |
| |
| @Test |
| public void testRegularEncodingWithoutMissingPoint() throws IOException { |
| ROW_NUM = 2000000; |
| |
| int[] data = new int[ROW_NUM]; |
| for (int i = 0; i < ROW_NUM; i++) { |
| data[i] = i; |
| } |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithOnePercentMissingPoints() throws IOException { |
| int[] data = getMissingPointData(2000000, 80); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithFivePercentMissingPoints() throws IOException { |
| int[] data = getMissingPointData(2000000, 20); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithTenPercentMissingPoints() throws IOException { |
| int[] data = getMissingPointData(2000000, 10); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithTwentyPercentMissingPoints() throws IOException { |
| int[] data = getMissingPointData(2000000, 5); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithLowMissingPoints1() throws IOException { |
| int[] data = getMissingPointData(2000000, 1700); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testRegularWithLowMissingPoints2() throws IOException { |
| int[] data = getMissingPointData(2000000, 40000); |
| |
| shouldReadAndWrite(data, ROW_NUM); |
| } |
| |
| @Test |
| public void testMissingPointsDataSize() throws IOException { |
| int[] originalData = new int[] {1000, 1100, 1200, 1300, 1500, 2000}; |
| out = new ByteArrayOutputStream(); |
| writeData(originalData, 6); |
| byte[] page = out.toByteArray(); |
| buffer = ByteBuffer.wrap(page); |
| int i = 0; |
| while (regularDataDecoder.hasNext(buffer)) { |
| assertEquals(originalData[i++], regularDataDecoder.readInt(buffer)); |
| } |
| } |
| |
| private int[] getMissingPointData(int dataSize, int missingPointInterval) { |
| ROW_NUM = dataSize; |
| |
| int originalRowNum = ROW_NUM; |
| |
| int kong = 0; |
| for (int i = 0; i < ROW_NUM; i++) { |
| if (i % missingPointInterval == 0) { |
| kong++; |
| } |
| } |
| |
| ROW_NUM = originalRowNum - kong; |
| |
| int[] data = new int[ROW_NUM]; |
| int j = 0; |
| for (int i = 0; i < originalRowNum; i++) { |
| if (i % missingPointInterval == 0) { |
| continue; |
| } |
| data[j++] = i; |
| } |
| |
| return data; |
| } |
| |
| private void writeData(int[] data, int length) { |
| for (int i = 0; i < length; i++) { |
| regularDataEncoder.encode(data[i], out); |
| } |
| regularDataEncoder.flush(out); |
| } |
| |
| private void shouldReadAndWrite(int[] data, int length) throws IOException { |
| out = new ByteArrayOutputStream(); |
| writeData(data, length); |
| byte[] page = out.toByteArray(); |
| buffer = ByteBuffer.wrap(page); |
| int i = 0; |
| while (regularDataDecoder.hasNext(buffer)) { |
| assertEquals(data[i++], regularDataDecoder.readInt(buffer)); |
| } |
| } |
| } |