content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.util.compression;
  
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  
  import java.io.ByteArrayInputStream;
  import java.io.ByteArrayOutputStream;
  import java.nio.file.Files;
  import java.nio.file.Path;
  import java.util.Arrays;
  import java.util.Collection;
  
  @RunWith(Parameterized.class)
  public class DirectoryMarshallerTest {
    @Parameterized.Parameters
    public static Collection<DirectoryMarshaller> data() {
      return Arrays.asList(new NoCompressionMarshaller(),
          new GzipMarshaller(),
          new TarGzMarshaller());
    }
  
    @Parameterized.Parameter
    public DirectoryMarshaller mMarshaller;
  
    @Rule
    public TemporaryFolder mFolder = new TemporaryFolder();
  
    @Test
    public void emptyDir() throws Exception {
      Path empty = mFolder.newFolder("emptyDir").toPath();
  
      tarUntarTest(empty);
    }
  
    @Test
    public void oneFileDir() throws Exception {
      Path dir = mFolder.newFolder("oneFileDir").toPath();
      Path file = dir.resolve("file");
      Files.write(file, "test content".getBytes());
  
      tarUntarTest(dir);
    }
  
    @Test
    public void tenFileDir() throws Exception {
      Path dir = mFolder.newFolder("tenFileDir").toPath();
      for (int i = 0; i < 10; i++) {
        Path file = dir.resolve("file" + i);
        Files.write(file, ("test content" + i).getBytes());
      }
  
      tarUntarTest(dir);
    }
  
    @Test
    public void emptySubDir() throws Exception {
      Path dir = mFolder.newFolder("emptySubDir").toPath();
      Path subDir = dir.resolve("subDir");
      Files.createDirectory(subDir);
  
      tarUntarTest(dir);
    }
  
    @Test
    public void nested() throws Exception {
      Path dir = mFolder.newFolder("emptySubDir").toPath();
      Path current = dir;
      for (int i = 0; i < 10; i++) {
        Path newDir = current.resolve("dir" + i);
        Files.createDirectory(newDir);
        current = newDir;
      }
      Path file = current.resolve("file");
      Files.write(file, "hello world".getBytes());
  
      tarUntarTest(dir);
    }
  
    private void tarUntarTest(Path path) throws Exception {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      mMarshaller.write(path, baos);
      Path reconstructed = mFolder.newFolder("untarred").toPath();
      reconstructed.toFile().delete();
      mMarshaller.read(reconstructed, new ByteArrayInputStream(baos.toByteArray()));
      FileUtil.assertDirectoriesEqual(path, reconstructed);
    }
  }
  