001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.types;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertThrows;
022import static org.junit.jupiter.api.Assertions.assertTrue;
023
024import org.apache.hadoop.hbase.testclassification.MiscTests;
025import org.apache.hadoop.hbase.testclassification.SmallTests;
026import org.apache.hadoop.hbase.util.Bytes;
027import org.apache.hadoop.hbase.util.Order;
028import org.apache.hadoop.hbase.util.PositionedByteRange;
029import org.apache.hadoop.hbase.util.SimplePositionedMutableByteRange;
030import org.junit.jupiter.api.Tag;
031import org.junit.jupiter.api.Test;
032
033@Tag(MiscTests.TAG)
034@Tag(SmallTests.TAG)
035public class TestFixedLengthWrapper {
036
037  static final byte[][] VALUES =
038    new byte[][] { Bytes.toBytes(""), Bytes.toBytes("1"), Bytes.toBytes("22"), Bytes.toBytes("333"),
039      Bytes.toBytes("4444"), Bytes.toBytes("55555"), Bytes.toBytes("666666"),
040      Bytes.toBytes("7777777"), Bytes.toBytes("88888888"), Bytes.toBytes("999999999"), };
041
042  /**
043   * all values of {@code limit} are >= max length of a member of {@code VALUES}.
044   */
045  static final int[] limits = { 9, 12, 15 };
046
047  @Test
048  public void testReadWrite() {
049    for (int limit : limits) {
050      PositionedByteRange buff = new SimplePositionedMutableByteRange(limit);
051      for (Order ord : new Order[] { Order.ASCENDING, Order.DESCENDING }) {
052        for (byte[] val : VALUES) {
053          buff.setPosition(0);
054          DataType<byte[]> type = new FixedLengthWrapper<>(new RawBytes(ord), limit);
055          assertEquals(limit, type.encode(buff, val));
056          buff.setPosition(0);
057          byte[] actual = type.decode(buff);
058          assertTrue(Bytes.equals(val, 0, val.length, actual, 0, val.length),
059            "Decoding output differs from expected");
060          buff.setPosition(0);
061          assertEquals(limit, type.skip(buff));
062        }
063      }
064    }
065  }
066
067  @Test
068  public void testInsufficientRemainingRead() {
069    final PositionedByteRange buff = new SimplePositionedMutableByteRange(0);
070    final DataType<byte[]> type = new FixedLengthWrapper<>(new RawBytes(Order.ASCENDING), 3);
071    assertThrows(IllegalArgumentException.class, () -> type.decode(buff));
072  }
073
074  @Test
075  public void testInsufficientRemainingWrite() {
076    final PositionedByteRange buff = new SimplePositionedMutableByteRange(0);
077    final DataType<byte[]> type = new FixedLengthWrapper<>(new RawBytes(Order.ASCENDING), 3);
078    assertThrows(IllegalArgumentException.class, () -> type.encode(buff, Bytes.toBytes("")));
079  }
080
081  @Test
082  public void testOverflowPassthrough() {
083    final PositionedByteRange buff = new SimplePositionedMutableByteRange(3);
084    final DataType<byte[]> type = new FixedLengthWrapper<>(new RawBytes(Order.ASCENDING), 0);
085    assertThrows(IllegalArgumentException.class, () -> type.encode(buff, Bytes.toBytes("foo")));
086  }
087}