/*
    * 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
    *
   *   https://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.deflate;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.io.IOException;
  import java.io.InputStream;
  import java.nio.file.Files;
  
  import org.apache.commons.compress.AbstractTest;
  import org.apache.commons.io.IOUtils;
  import org.junit.jupiter.api.Test;
  
  class DeflateCompressorInputStreamTest {
  
      @Test
      void testAvailableShouldReturnNonZero() throws IOException {
          try (InputStream is = Files.newInputStream(AbstractTest.getPath("bla.tar.deflatez"));
                  DeflateCompressorInputStream in = new DeflateCompressorInputStream(is)) {
              assertTrue(in.available() > 0);
          }
      }
  
      @Test
      void testMultiByteReadConsistentlyReturnsMinusOneAtEof() throws IOException {
          final byte[] buf = new byte[2];
          try (InputStream is = Files.newInputStream(AbstractTest.getPath("bla.tar.deflatez"));
                  DeflateCompressorInputStream in = new DeflateCompressorInputStream(is)) {
              IOUtils.toByteArray(in);
              assertEquals(-1, in.read(buf));
              assertEquals(-1, in.read(buf));
          }
      }
  
      @Test
      void testShouldBeAbleToSkipAByte() throws IOException {
          try (InputStream is = Files.newInputStream(AbstractTest.getPath("bla.tar.deflatez"));
                  DeflateCompressorInputStream in = new DeflateCompressorInputStream(is)) {
              assertEquals(1, in.skip(1));
          }
      }
  
      @Test
      void testSingleByteReadConsistentlyReturnsMinusOneAtEof() throws IOException {
          try (InputStream is = Files.newInputStream(AbstractTest.getPath("bla.tar.deflatez"));
                  DeflateCompressorInputStream in = new DeflateCompressorInputStream(is)) {
              IOUtils.toByteArray(in);
              assertEquals(-1, in.read());
              assertEquals(-1, in.read());
          }
      }
  
      @Test
      void testSingleByteReadWorksAsExpected() throws IOException {
          try (InputStream is = Files.newInputStream(AbstractTest.getPath("bla.tar.deflatez"));
                  DeflateCompressorInputStream in = new DeflateCompressorInputStream(is)) {
              // tar header starts with file name "test1.xml"
              assertEquals('t', in.read());
          }
      }
  
  }