| /* |
| * 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.utils; |
| |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.junit.Assert.assertEquals; |
| |
| public class ReadWriteStreamUtilsTest { |
| |
| private List<Integer> unsignedVarIntList; |
| private List<Integer> littleEndianIntList; |
| private List<Long> littleEndianLongList; |
| |
| @Before |
| public void setUp() { |
| unsignedVarIntList = new ArrayList<Integer>(); |
| littleEndianIntList = new ArrayList<Integer>(); |
| littleEndianLongList = new ArrayList<Long>(); |
| |
| int uvInt = 123; |
| for (int i = 0; i < 10; i++) { |
| unsignedVarIntList.add(uvInt); |
| unsignedVarIntList.add(uvInt - 1); |
| uvInt *= 3; |
| } |
| |
| int leInt = 17; |
| for (int i = 0; i < 17; i++) { |
| littleEndianIntList.add(leInt); |
| littleEndianIntList.add(leInt - 1); |
| leInt *= 3; |
| } |
| |
| long leLong = 13; |
| for (int i = 0; i < 38; i++) { |
| littleEndianLongList.add(leLong); |
| littleEndianLongList.add(leLong - 1); |
| leLong *= 3; |
| } |
| } |
| |
| @After |
| public void tearDown() {} |
| |
| @Test |
| public void testGetIntMinBitWidth() { |
| List<Integer> uvIntList = new ArrayList<Integer>(); |
| uvIntList.add(0); |
| assertEquals(1, ReadWriteForEncodingUtils.getIntMaxBitWidth(uvIntList)); |
| uvIntList.add(1); |
| assertEquals(1, ReadWriteForEncodingUtils.getIntMaxBitWidth(uvIntList)); |
| int uvInt = 123; |
| for (int i = 0; i < 10; i++) { |
| uvIntList.add(uvInt); |
| uvIntList.add(uvInt - 1); |
| assertEquals( |
| 32 - Integer.numberOfLeadingZeros(uvInt), |
| ReadWriteForEncodingUtils.getIntMaxBitWidth(uvIntList)); |
| uvInt *= 3; |
| } |
| } |
| |
| @Test |
| public void testGetLongMinBitWidth() { |
| List<Long> uvLongList = new ArrayList<Long>(); |
| uvLongList.add(0L); |
| assertEquals(1, ReadWriteForEncodingUtils.getLongMaxBitWidth(uvLongList)); |
| uvLongList.add(1L); |
| assertEquals(1, ReadWriteForEncodingUtils.getLongMaxBitWidth(uvLongList)); |
| long uvLong = 123; |
| for (int i = 0; i < 10; i++) { |
| uvLongList.add(uvLong); |
| uvLongList.add(uvLong - 1); |
| assertEquals( |
| 64 - Long.numberOfLeadingZeros(uvLong), |
| ReadWriteForEncodingUtils.getLongMaxBitWidth(uvLongList)); |
| uvLong *= 7; |
| } |
| } |
| |
| @Test |
| public void testReadUnsignedVarInt() throws IOException { |
| for (int uVarInt : unsignedVarIntList) { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ReadWriteForEncodingUtils.writeUnsignedVarInt(uVarInt, baos); |
| ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); |
| int value_read = ReadWriteForEncodingUtils.readUnsignedVarInt(bais); |
| assertEquals(value_read, uVarInt); |
| } |
| } |
| |
| /** @see {@link #testReadUnsignedVarInt()} */ |
| @Test |
| public void testWriteUnsignedVarInt() {} |
| |
| /** @see {@link #testReadIntLittleEndianPaddedOnBitWidth()} */ |
| @Test |
| public void testWriteIntLittleEndianPaddedOnBitWidth() {} |
| |
| /** @see {@link #testReadLongLittleEndianPaddedOnBitWidth()} */ |
| @Test |
| public void testWriteLongLittleEndianPaddedOnBitWidth() {} |
| |
| @Test |
| public void testReadIntLittleEndianPaddedOnBitWidth() throws IOException { |
| for (int value : littleEndianIntList) { |
| int bitWidth = 32 - Integer.numberOfLeadingZeros(value); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ReadWriteForEncodingUtils.writeIntLittleEndianPaddedOnBitWidth(value, baos, bitWidth); |
| ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray()); |
| |
| int value_read = |
| ReadWriteForEncodingUtils.readIntLittleEndianPaddedOnBitWidth(buffer, bitWidth); |
| assertEquals(value_read, value); |
| } |
| } |
| |
| @Test |
| public void testReadLongLittleEndianPaddedOnBitWidth() throws IOException { |
| for (long value : littleEndianLongList) { |
| int bitWidth = 64 - Long.numberOfLeadingZeros(value); |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| ReadWriteForEncodingUtils.writeLongLittleEndianPaddedOnBitWidth(value, baos, bitWidth); |
| ByteBuffer buffer = ByteBuffer.wrap(baos.toByteArray()); |
| |
| long value_read = |
| ReadWriteForEncodingUtils.readLongLittleEndianPaddedOnBitWidth(buffer, bitWidth); |
| assertEquals(value_read, value); |
| } |
| } |
| } |