content: /*
   * 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.bookkeeper.client.impl;
  
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import io.netty.buffer.ByteBuf;
  import io.netty.buffer.Unpooled;
  import java.nio.ByteBuffer;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.Test;
  
  /**
   * Unit test for {@link LedgerEntryImpl}.
   */
  public class LedgerEntryImplTest {
  
      private final long ledgerId;
      private final long entryId;
      private final long length;
      private final byte[] dataBytes;
      private final ByteBuf dataBuf;
      private final LedgerEntryImpl entryImpl;
  
      public LedgerEntryImplTest() {
          this.ledgerId = 1234L;
          this.entryId = 3579L;
          this.length = 200L;
          this.dataBytes = "test-ledger-entry-impl".getBytes(UTF_8);
          this.dataBuf = Unpooled.wrappedBuffer(dataBytes);
          this.entryImpl = LedgerEntryImpl.create(
              ledgerId,
              entryId,
              length,
              dataBuf);
      }
  
      @AfterEach
      public void teardown() {
          this.entryImpl.close();
          assertEquals(0, dataBuf.refCnt());
      }
  
      @Test
      public void testGetters() {
          assertEquals(ledgerId, entryImpl.getLedgerId());
          assertEquals(entryId, entryImpl.getEntryId());
          assertEquals(length, entryImpl.getLength());
          assertArrayEquals(dataBytes, entryImpl.getEntryBytes());
          // getEntry should not modify readerIndex
          assertEquals(0, entryImpl.getEntryBuffer().readerIndex());
          assertEquals(dataBytes.length, entryImpl.getEntryBuffer().readableBytes());
          // getEntryNioBuffer should not modify readerIndex
          ByteBuffer nioBuffer = entryImpl.getEntryNioBuffer();
          assertEquals(dataBytes.length, nioBuffer.remaining());
          byte[] readBytes = new byte[nioBuffer.remaining()];
          nioBuffer.get(readBytes);
          assertArrayEquals(dataBytes, readBytes);
          assertEquals(0, entryImpl.getEntryBuffer().readerIndex());
          assertEquals(dataBytes.length, entryImpl.getEntryBuffer().readableBytes());
      }
  
      @Test
      public void testSetters() {
          assertEquals(ledgerId, entryImpl.getLedgerId());
          assertEquals(entryId, entryImpl.getEntryId());
          assertEquals(length, entryImpl.getLength());
  
          entryImpl.setLength(length * 2);
          assertEquals(length * 2, entryImpl.getLength());
  
          entryImpl.setEntryId(entryId * 2);
          assertEquals(entryId * 2, entryImpl.getEntryId());
  
          byte[] anotherBytes = "another-ledger-entry-impl".getBytes(UTF_8);
          ByteBuf anotherBuf = Unpooled.wrappedBuffer(anotherBytes);
  
          entryImpl.setEntryBuf(anotherBuf);
          // set buf should release the original buf
          assertEquals(0, dataBuf.refCnt());
      }
  
      @Test
      public void testDuplicate() {
          LedgerEntryImpl duplicatedEntry = LedgerEntryImpl.duplicate(entryImpl);
  
          // the underneath buffer should have 2 entries referencing it
          assertEquals(2, dataBuf.refCnt());
  
          assertEquals(ledgerId, duplicatedEntry.getLedgerId());
          assertEquals(entryId, duplicatedEntry.getEntryId());
          assertEquals(length, duplicatedEntry.getLength());
          assertArrayEquals(dataBytes, duplicatedEntry.getEntryBytes());
  
          duplicatedEntry.close();
          assertEquals(1, dataBuf.refCnt());
      }
  
  }
  