/*
    *  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.archivers.zip;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.io.DataOutput;
  import java.io.DataOutputStream;
  import java.io.IOException;
  import java.util.zip.Deflater;
  import java.util.zip.ZipEntry;
  
  import org.junit.jupiter.api.Test;
  
  public class StreamCompressorTest {
  
      @Test
      public void testCreateDataOutputCompressor() throws IOException {
          final DataOutput dataOutputStream = new DataOutputStream(new ByteArrayOutputStream());
          try (StreamCompressor streamCompressor = StreamCompressor.create(dataOutputStream, new Deflater(9))) {
              assertNotNull(streamCompressor);
          }
      }
  
      @Test
      public void testDeflatedEntries() throws Exception {
          final ByteArrayOutputStream baos = new ByteArrayOutputStream();
          try (StreamCompressor sc = StreamCompressor.create(baos)) {
              sc.deflate(new ByteArrayInputStream("AAAAAABBBBBB".getBytes()), ZipEntry.DEFLATED);
              assertEquals(12, sc.getBytesRead());
              assertEquals(8, sc.getBytesWrittenForLastEntry());
              assertEquals(3299542, sc.getCrc32());
  
              final byte[] actuals = baos.toByteArray();
              final byte[] expected = { 115, 116, 4, 1, 39, 48, 0, 0 };
              // Note that this test really asserts stuff about the java Deflater, which might be a little bit brittle
              assertArrayEquals(expected, actuals);
          }
      }
  
      @Test
      public void testStoredEntries() throws Exception {
          final ByteArrayOutputStream baos = new ByteArrayOutputStream();
          try (StreamCompressor sc = StreamCompressor.create(baos)) {
              sc.deflate(new ByteArrayInputStream("A".getBytes()), ZipEntry.STORED);
              sc.deflate(new ByteArrayInputStream("BAD".getBytes()), ZipEntry.STORED);
              assertEquals(3, sc.getBytesRead());
              assertEquals(3, sc.getBytesWrittenForLastEntry());
              assertEquals(344750961, sc.getCrc32());
              sc.deflate(new ByteArrayInputStream("CAFE".getBytes()), ZipEntry.STORED);
              assertEquals("ABADCAFE", baos.toString());
          }
      }
  }