content: /*
   *  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.causeway.commons.io;
  
  import java.util.Random;
  
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertArrayEquals;
  
  import lombok.SneakyThrows;
  
  class ZipUtilsTest {
  
      private byte[] bytes;
  
      @BeforeEach
      void setup() {
          var rd = new Random(9999); // fixed seed - reproducible tests
          this.bytes = new byte[16*1024];
          rd.nextBytes(bytes);
      }
  
      @Test
      void zipUnzipRountrip() throws Exception {
          assertArrayEquals(bytes, unZip_usingStream(zip(bytes)));
          assertArrayEquals(bytes, unZip_usingOptional(zip(bytes)));
      }
  
      // -- HELPER
  
      private static byte[] zip(final byte[] unzipped) {
          var zipBuilder = ZipUtils.zipEntryBuilder();
          zipBuilder.add("test", unzipped);
          return zipBuilder.toBytes();
      }
  
      @SneakyThrows
      private static byte[] unZip_usingStream(final byte[] zipped) {
          return ZipUtils.streamZipEntries(DataSource.ofBytes(zipped))
          .findFirst()
          .map(entry->entry.bytes())
          .orElseGet(()->new byte[0]);
      }
  
      @SneakyThrows
      private static byte[] unZip_usingOptional(final byte[] zipped) {
          return ZipUtils.firstZipEntry(DataSource.ofBytes(zipped))
          .map(entry->entry.bytes())
          .orElseGet(()->new byte[0]);
      }
  
  }
  