* .
     */
    @Test
    public void testLoadPropertiesInputStream() {
        final InputStream inputStream = ResourceUtil.getResourceAsStream("org/codelibs/core/io/test.properties");
        final Properties properties = new Properties();
        PropertiesUtil.load(properties, inputStream);
        assertThat(properties.getProperty("hoge"), is("ほげ"));
    }

        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {
            PluginDescriptorStaxReader xml = new PluginDescriptorStaxReader();

        }

        public XmlReaderRequestBuilder url(URL url) {
            this.url = url;
            return this;
        }

        public XmlReaderRequestBuilder inputStream(InputStream inputStream) {
            this.inputStream = inputStream;
            return this;
        }

        public XmlReaderRequestBuilder reader(Reader reader) {
            this.reader = reader;
            return this;
        }

    byte[] big = newPreFilledByteArray(5);
    InputStream bin = new ByteArrayInputStream(big);
    InputStream lin = ByteStreams.limit(bin, 2);

    IOException expected = assertThrows(IOException.class, () -> lin.reset());
    assertThat(expected).hasMessageThat().isEqualTo("Mark not set");
  }

  public void testLimit_markNotSupported() {
    InputStream lin = ByteStreams.limit(new UnmarkableInputStream(), 2);

        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

        URL url = request.getURL();
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (path == null && url == null && reader == null && inputStream == null) {
            throw new IllegalArgumentException("path, url, reader or inputStream must be non null");
        }
        try {
            InputSource source = null;

   * to flush all bytes to the underlying resource.
   *
   * @param inputStream the input stream to be closed, or {@code null} in which case this method
   *     does nothing
   * @since 17.0
   */
  public static void closeQuietly(@CheckForNull InputStream inputStream) {
    try {
      close(inputStream, true);
    } catch (IOException impossible) {
      throw new AssertionError(impossible);
    }

    }

    @Override
    public InputStream openStream() throws IOException {
      return sliceStream(ByteSource.this.openStream());
    }

    @Override
    public InputStream openBufferedStream() throws IOException {
      return sliceStream(ByteSource.this.openBufferedStream());
    }

    private InputStream sliceStream(InputStream in) throws IOException {
      if (offset > 0) {

    }


    static int readn ( InputStream in, byte[] b, int off, int len ) throws IOException {
        int i = 0, n;

        while ( i < len ) {
            n = in.read(b, off + i, len - i);
            if ( n <= 0 ) {
                break;
            }
            i += n;
        }

        return i;
    }

        Objects.requireNonNull(request, "request");
        Reader reader = request.getReader();
        InputStream inputStream = request.getInputStream();
        if (reader == null && inputStream == null) {
            throw new IllegalArgumentException("reader or inputStream must be non null");
        }
        try {
            InputSource source = null;