@Test
public void testReadFileContent() throws Exception {

  fileList.add(createFile(inputPath, fs, "c c"));
  final Path sub1 = new Path(inputPath, "sub 1");
  fs.mkdirs(sub1);
  fileList.add(createFile(inputPath, fs, sub1.getName(), "file x y z"));
  fileList.add(createFile(inputPath, fs, sub1.getName(), "file"));
  fileList.add(createFile(inputPath, fs, sub1.getName(), "x"));
  fileList.add(createFile(inputPath, fs, sub1.getName(), "y"));
  fileList.add(createFile(inputPath, fs, sub1.getName(), "z"));
  final Path sub2 = new Path(inputPath, "sub 1 with suffix");
  fs.mkdirs(sub2);
  fileList.add(createFile(inputPath, fs, sub2.getName(), "z"));
  // Generate a big binary file content:
  final byte[] binContent = prepareBin();
  fileList.add(createFile(inputPath, fs, binContent, sub2.getName(), "bin"));
  fileList.add(createFile(inputPath, fs, new byte[0], sub2.getName(), "zero-length"));
  final String fullHarPathStr = makeArchive();
  // Create fresh HarFs:
  final HarFileSystem harFileSystem = new HarFileSystem(fs);
  try {
    final URI harUri = new URI(fullHarPathStr);
    harFileSystem.initialize(harUri, fs.getConf());
    // now read the file content and compare it against the expected:
    int readFileCount = 0;
    for (final String pathStr0 : fileList) {
      final Path path = new Path(fullHarPathStr + Path.SEPARATOR + pathStr0);
      final String baseName = path.getName();
      final FileStatus status = harFileSystem.getFileStatus(path);
      if (status.isFile()) {
        // read the file:
        final byte[] actualContentSimple = readAllSimple(
            harFileSystem.open(path), true);
        
        final byte[] actualContentBuffer = readAllWithBuffer(
            harFileSystem.open(path), true);
        assertArrayEquals(actualContentSimple, actualContentBuffer);
        
        final byte[] actualContentFully = readAllWithReadFully(
            actualContentSimple.length,
            harFileSystem.open(path), true);
        assertArrayEquals(actualContentSimple, actualContentFully);
        
        final byte[] actualContentSeek = readAllWithSeek(
            actualContentSimple.length,
            harFileSystem.open(path), true);
        assertArrayEquals(actualContentSimple, actualContentSeek);
        
        final byte[] actualContentRead4
        = readAllWithRead4(harFileSystem.open(path), true);
        assertArrayEquals(actualContentSimple, actualContentRead4);
        
        final byte[] actualContentSkip = readAllWithSkip(
            actualContentSimple.length, 
            harFileSystem.open(path), 
            harFileSystem.open(path), 
            true);
        assertArrayEquals(actualContentSimple, actualContentSkip);
        
        if ("bin".equals(baseName)) {
          assertArrayEquals(binContent, actualContentSimple);
        } else if ("zero-length".equals(baseName)) {
          assertEquals(0, actualContentSimple.length);
        } else {
          String actual = new String(actualContentSimple, "UTF-8");
          assertEquals(baseName, actual);
        }
        readFileCount++;
      }
    }
    assertThat(fileList.size()).isEqualTo(readFileCount);
  } finally {
    harFileSystem.close();
  }
}