/*
    * 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.commons.compress.utils;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertThrows;
  
  import java.io.ByteArrayInputStream;
  import java.io.IOException;
  import java.util.zip.Adler32;
  import java.util.zip.CRC32;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Unit tests for class {@link ChecksumVerifyingInputStream org.apache.commons.compress.utils.ChecksumVerifyingInputStream}.
   *
   * @see ChecksumVerifyingInputStream
   */
  public class ChecksumVerifyingInputStreamTest {
  
      @Test
      public void testReadTakingByteArrayThrowsIOException() throws IOException {
          final Adler32 adler32 = new Adler32();
          final byte[] byteArray = new byte[3];
          final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
          try (ChecksumVerifyingInputStream checksumVerifyingInputStream = new ChecksumVerifyingInputStream(adler32, byteArrayInputStream, -1859L, (byte) -68)) {
              assertThrows(IOException.class, () -> checksumVerifyingInputStream.read(byteArray));
          }
      }
  
      @Test
      public void testReadTakingNoArgumentsThrowsIOException() throws IOException {
          final CRC32 crc32 = new CRC32();
          final byte[] byteArray = new byte[9];
          final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
          try (ChecksumVerifyingInputStream checksumVerifyingInputStream = new ChecksumVerifyingInputStream(crc32, byteArrayInputStream, (byte) 1, (byte) 1)) {
              assertThrows(IOException.class, () -> checksumVerifyingInputStream.read());
          }
      }
  
      @Test
      public void testSkip() throws IOException {
          final CRC32 crc32 = new CRC32();
          final byte[] byteArray = new byte[4];
          final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(byteArray);
          try (ChecksumVerifyingInputStream checksumVerifyingInputStream = new ChecksumVerifyingInputStream(crc32, byteArrayInputStream, (byte) 33, 2303L)) {
              @SuppressWarnings("unused")
              final int intOne = checksumVerifyingInputStream.read(byteArray);
              final long skipReturnValue = checksumVerifyingInputStream.skip((byte) 1);
              assertEquals(558161692L, crc32.getValue());
              assertEquals(0, byteArrayInputStream.available());
              assertArrayEquals(new byte[4], byteArray);
              assertEquals(0L, skipReturnValue);
          }
      }
  
  }