/*
    * 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.lzma;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import org.junit.jupiter.api.Test;
  
  /**
   * Tests {@link LZMAUtils}.
   */
  class LZMAUtilsTest {
  
      @Test
      void testCachingIsEnabledByDefaultAndLZMAIsPresent() {
          assertEquals(LZMAUtils.CachedAvailability.CACHED_AVAILABLE, LZMAUtils.getCachedLZMAAvailability());
          assertTrue(LZMAUtils.isLZMACompressionAvailable());
      }
  
      @Test
      void testCanTurnOffCaching() {
          try {
              LZMAUtils.setCacheLZMAAvailablity(false);
              assertEquals(LZMAUtils.CachedAvailability.DONT_CACHE, LZMAUtils.getCachedLZMAAvailability());
              assertTrue(LZMAUtils.isLZMACompressionAvailable());
          } finally {
              LZMAUtils.setCacheLZMAAvailablity(true);
          }
      }
  
      @SuppressWarnings("deprecation")
      @Test
      void testGetCompressedFilename() {
          assertEquals(".lzma", LZMAUtils.getCompressedFilename(""));
          assertEquals(".lzma", LZMAUtils.getCompressedFileName(""));
          assertEquals("x.lzma", LZMAUtils.getCompressedFilename("x"));
          assertEquals("x.lzma", LZMAUtils.getCompressedFileName("x"));
  
          assertEquals("x.wmf .lzma", LZMAUtils.getCompressedFilename("x.wmf "));
          assertEquals("x.wmf .lzma", LZMAUtils.getCompressedFileName("x.wmf "));
          assertEquals("x.wmf\n.lzma", LZMAUtils.getCompressedFilename("x.wmf\n"));
          assertEquals("x.wmf\n.lzma", LZMAUtils.getCompressedFileName("x.wmf\n"));
          assertEquals("x.wmf.y.lzma", LZMAUtils.getCompressedFilename("x.wmf.y"));
          assertEquals("x.wmf.y.lzma", LZMAUtils.getCompressedFileName("x.wmf.y"));
      }
  
      @SuppressWarnings("deprecation")
      @Test
      void testGetUncompressedFilename() {
          assertEquals("", LZMAUtils.getUncompressedFilename(""));
          assertEquals("", LZMAUtils.getUncompressedFileName(""));
          assertEquals(".lzma", LZMAUtils.getUncompressedFilename(".lzma"));
          assertEquals(".lzma", LZMAUtils.getUncompressedFileName(".lzma"));
  
          assertEquals("x", LZMAUtils.getUncompressedFilename("x.lzma"));
          assertEquals("x", LZMAUtils.getUncompressedFileName("x.lzma"));
          assertEquals("x", LZMAUtils.getUncompressedFilename("x-lzma"));
          assertEquals("x", LZMAUtils.getUncompressedFileName("x-lzma"));
  
          assertEquals("x.lzma ", LZMAUtils.getUncompressedFilename("x.lzma "));
          assertEquals("x.lzma ", LZMAUtils.getUncompressedFileName("x.lzma "));
          assertEquals("x.lzma\n", LZMAUtils.getUncompressedFilename("x.lzma\n"));
          assertEquals("x.lzma\n", LZMAUtils.getUncompressedFileName("x.lzma\n"));
          assertEquals("x.lzma.y", LZMAUtils.getUncompressedFilename("x.lzma.y"));
          assertEquals("x.lzma.y", LZMAUtils.getUncompressedFileName("x.lzma.y"));
      }
  
      @SuppressWarnings("deprecation")
      @Test
      void testIsCompressedFilename() {
          assertFalse(LZMAUtils.isCompressedFilename(""));
          assertFalse(LZMAUtils.isCompressedFileName(""));
          assertFalse(LZMAUtils.isCompressedFilename(".lzma"));
          assertFalse(LZMAUtils.isCompressedFileName(".lzma"));
  
          assertTrue(LZMAUtils.isCompressedFilename("x.lzma"));
          assertTrue(LZMAUtils.isCompressedFileName("x.lzma"));
          assertTrue(LZMAUtils.isCompressedFilename("x-lzma"));
          assertTrue(LZMAUtils.isCompressedFileName("x-lzma"));
  
          assertFalse(LZMAUtils.isCompressedFilename("xxgz"));
         assertFalse(LZMAUtils.isCompressedFileName("xxgz"));
         assertFalse(LZMAUtils.isCompressedFilename("lzmaz"));
         assertFalse(LZMAUtils.isCompressedFileName("lzmaz"));
         assertFalse(LZMAUtils.isCompressedFilename("xaz"));
         assertFalse(LZMAUtils.isCompressedFileName("xaz"));
 
         assertFalse(LZMAUtils.isCompressedFilename("x.lzma "));
         assertFalse(LZMAUtils.isCompressedFileName("x.lzma "));
         assertFalse(LZMAUtils.isCompressedFilename("x.lzma\n"));
         assertFalse(LZMAUtils.isCompressedFileName("x.lzma\n"));
         assertFalse(LZMAUtils.isCompressedFilename("x.lzma.y"));
         assertFalse(LZMAUtils.isCompressedFileName("x.lzma.y"));
     }
 
     @Test
     void testMatches() {
         final byte[] data = { (byte) 0x5D, 0, 0, };
         assertFalse(LZMAUtils.matches(data, 2));
         assertTrue(LZMAUtils.matches(data, 3));
         assertTrue(LZMAUtils.matches(data, 4));
         data[2] = '0';
         assertFalse(LZMAUtils.matches(data, 3));
     }
 
     @Test
     void testTurningOnCachingReEvaluatesAvailability() {
         try {
             LZMAUtils.setCacheLZMAAvailablity(false);
             assertEquals(LZMAUtils.CachedAvailability.DONT_CACHE, LZMAUtils.getCachedLZMAAvailability());
             LZMAUtils.setCacheLZMAAvailablity(true);
             assertEquals(LZMAUtils.CachedAvailability.CACHED_AVAILABLE, LZMAUtils.getCachedLZMAAvailability());
         } finally {
             LZMAUtils.setCacheLZMAAvailablity(true);
         }
     }
 
 }