/*
    * 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.compressors;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.io.File;
  import java.io.InputStream;
  import java.io.OutputStream;
  import java.nio.file.Files;
  
  import org.apache.commons.compress.AbstractTest;
  import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
  import org.junit.jupiter.api.Test;
  
  public final class BZip2Test extends AbstractTest {
  
      @Test
      public void testBzip2Unarchive() throws Exception {
          final File input = getFile("bla.txt.bz2");
          final File output = newTempFile("bla.txt");
          try (InputStream is = Files.newInputStream(input.toPath());
                  CompressorInputStream in = new CompressorStreamFactory().createCompressorInputStream("bzip2", is)) {
              Files.copy(in, output.toPath());
          }
      }
  
      @Test
      public void testBzipCreation() throws Exception {
          File output;
          final File input = getFile("test.txt");
          {
              output = newTempFile("test.txt.bz2");
              try (OutputStream out = Files.newOutputStream(output.toPath());
                      CompressorOutputStream cos = new CompressorStreamFactory().createCompressorOutputStream("bzip2", out)) {
                  Files.copy(input.toPath(), cos);
              }
          }
  
          final File decompressed = newTempFile("decompressed.txt");
          {
              try (InputStream is = Files.newInputStream(output.toPath());
                      CompressorInputStream in = new CompressorStreamFactory().createCompressorInputStream("bzip2", is)) {
                  Files.copy(in, decompressed.toPath());
              }
          }
  
          assertEquals(input.length(), decompressed.length());
      }
  
      @Test
      public void testCOMPRESS131() throws Exception {
          final File input = getFile("COMPRESS-131.bz2");
          try (InputStream is = Files.newInputStream(input.toPath())) {
              try (CompressorInputStream in = new BZip2CompressorInputStream(is, true)) {
                  int l = 0;
                  while (in.read() != -1) {
                      l++;
                  }
                  assertEquals(539, l);
              }
          }
      }
  
      @Test
      public void testConcatenatedStreamsReadFirstOnly() throws Exception {
          final File input = getFile("multiple.bz2");
          try (InputStream is = Files.newInputStream(input.toPath())) {
              try (CompressorInputStream in = new CompressorStreamFactory().createCompressorInputStream("bzip2", is)) {
                  assertEquals('a', in.read());
                  assertEquals(-1, in.read());
              }
          }
      }
  
      @Test
      public void testConcatenatedStreamsReadFully() throws Exception {
          final File input = getFile("multiple.bz2");
          try (InputStream is = Files.newInputStream(input.toPath())) {
              try (CompressorInputStream in = new BZip2CompressorInputStream(is, true)) {
                  assertEquals('a', in.read());
                  assertEquals('b', in.read());
                  assertEquals(0, in.available());
                 assertEquals(-1, in.read());
             }
         }
     }
 
 }