/*
    * 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 java.nio.charset.StandardCharsets.ISO_8859_1;
  import static java.nio.charset.StandardCharsets.US_ASCII;
  import static java.nio.charset.StandardCharsets.UTF_16BE;
  import static java.nio.charset.StandardCharsets.UTF_8;
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import java.nio.ByteBuffer;
  import java.util.Arrays;
  
  import org.junit.jupiter.api.Test;
  
  public class NioZipEncodingTest {
  
      private static final String UMLAUTS = "\u00e4\u00f6\u00fc";
  
      private static final String RAINBOW_EMOJI = "\ud83c\udf08";
  
      @Test
      public void testPartialSurrogatePair() {
          final NioZipEncoding e = new NioZipEncoding(US_ASCII, false);
          final ByteBuffer bb = e.encode("\ud83c");
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertEquals(0, result.length);
      }
  
      @Test
      public void testRainbowEmojiToSurrogatePairUTF16() {
          final NioZipEncoding e = new NioZipEncoding(UTF_16BE, false);
          final ByteBuffer bb = e.encode(RAINBOW_EMOJI);
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertArrayEquals(RAINBOW_EMOJI.getBytes(UTF_16BE), result);
      }
  
      @Test
      public void testUmlautToISO88591() {
          final NioZipEncoding e = new NioZipEncoding(ISO_8859_1, true);
          final ByteBuffer bb = e.encode("\u00e4\u00f6\u00fc");
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertArrayEquals(UMLAUTS.getBytes(ISO_8859_1), result);
      }
  
      @Test
      public void testUmlautToUTF16BE() {
          final NioZipEncoding e = new NioZipEncoding(UTF_16BE, false);
          final ByteBuffer bb = e.encode(UMLAUTS);
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertArrayEquals(UMLAUTS.getBytes(UTF_16BE), result);
      }
  
      @Test
      public void testUmlautToUTF8() {
          final NioZipEncoding e = new NioZipEncoding(UTF_8, true);
          final ByteBuffer bb = e.encode("\u00e4\u00f6\u00fc");
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertArrayEquals(UMLAUTS.getBytes(UTF_8), result);
      }
  
      @Test
      public void testUnmappableRainbowEmoji() {
          final NioZipEncoding e = new NioZipEncoding(US_ASCII, false);
          final ByteBuffer bb = e.encode(RAINBOW_EMOJI);
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
          assertEquals("%UD83C%UDF08", new String(result, US_ASCII));
      }
  
      @Test
      public void testUnmappableUmlauts() {
          final NioZipEncoding e = new NioZipEncoding(US_ASCII, false);
          final ByteBuffer bb = e.encode("\u00e4\u00f6\u00fc");
          final int off = bb.arrayOffset();
          final byte[] result = Arrays.copyOfRange(bb.array(), off, off + bb.limit() - bb.position());
         assertEquals("%U00E4%U00F6%U00FC", new String(result, US_ASCII));
     }
 }