/*
    * 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.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.BufferedInputStream;
  import java.io.File;
  import java.io.InputStream;
  import java.nio.file.Files;
  
  import org.apache.commons.compress.AbstractTest;
  import org.apache.commons.compress.compressors.z.ZCompressorInputStream;
  import org.junit.jupiter.api.Test;
  
  public final class ZTest extends AbstractTest {
  
      @Test
      public void testMatches() {
          assertFalse(ZCompressorInputStream.matches(new byte[] { 1, 2, 3, 4 }, 4));
          assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, 2, 3, 4 }, 4));
          assertFalse(ZCompressorInputStream.matches(new byte[] { 1, (byte) 0x9d, 3, 4 }, 4));
          assertFalse(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 }, 3));
          assertTrue(ZCompressorInputStream.matches(new byte[] { 0x1f, (byte) 0x9d, 3, 4 }, 4));
      }
  
      private void testUnarchive(final StreamWrapper<CompressorInputStream> wrapper) throws Exception {
          final File input = getFile("bla.tar.Z");
          final File output = newTempFile("bla.tar");
          try (InputStream is = Files.newInputStream(input.toPath())) {
              try (InputStream in = wrapper.wrap(is)) {
                  Files.copy(in, output.toPath());
              }
          }
      }
  
      @Test
      public void testZUnarchive() throws Exception {
          testUnarchive(ZCompressorInputStream::new);
      }
  
      @Test
      public void testZUnarchiveViaAutoDetection() throws Exception {
          testUnarchive(is -> new CompressorStreamFactory().createCompressorInputStream(new BufferedInputStream(is)));
      }
  
      @Test
      public void testZUnarchiveViaFactory() throws Exception {
          testUnarchive(is -> new CompressorStreamFactory().createCompressorInputStream(CompressorStreamFactory.Z, is));
      }
  
  }