Path path = request.getPath();
        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 {

    /**
     * Test method for
     * {@link org.codelibs.core.io.PropertiesUtil#load(java.util.Properties, java.io.Reader)}
     * .
     */
    @Test
    public void testLoadPropertiesReaderReaderNull() {
        exception.expect(NullArgumentException.class);
        exception.expectMessage(is("[ECL0008]argument[reader] is null."));
        final InputStreamReader inputStreamReader = null;

  }

  // Returns a Readable that is *not* a Reader.
  private static Readable getChunkedReadable(String input, int chunk) {
    final Reader reader = getChunkedReader(input, chunk);
    return new Readable() {
      @Override
      public int read(CharBuffer cbuf) throws IOException {
        return reader.read(cbuf);
      }
    };
  }

  private static Reader getChunkedReader(String input, final int chunk) {

  }

  // Returns a Readable that is *not* a Reader.
  private static Readable getChunkedReadable(String input, int chunk) {
    final Reader reader = getChunkedReader(input, chunk);
    return new Readable() {
      @Override
      public int read(CharBuffer cbuf) throws IOException {
        return reader.read(cbuf);
      }
    };
  }

  private static Reader getChunkedReader(String input, final int chunk) {

    body.writeTo(bodyContent)

    val reader = MultipartReader(bodyContent, "boundary")

    val quickPart = reader.nextPart()!!
    assertThat(quickPart.headers).isEqualTo(
      headersOf(
        "Content-Type",
        "text/plain; charset=utf-8",
      ),
    )
    assertThat(quickPart.body.readUtf8()).isEqualTo("Quick")

    val brownPart = reader.nextPart()!!
    assertThat(brownPart.headers).isEqualTo(

            override fun close() {
              closed.set(true)
              super.close()
            }
          }.buffer()
        }
      }
    val reader = body.charStream()
    assertThat(reader.read()).isEqualTo('h'.code)
    reader.close()
    assertThat(closed.get()).isTrue()
  }

  @Test
  fun sourceSeesBom() {
    val body = "efbbbf68656c6c6f".decodeHex().toResponseBody()

var Discard io.Writer = discard{}

// discard is /dev/null for Golang.
type discard struct{}

func (discard) Write(p []byte) (int, error) {
	return len(p), nil
}

// DiscardReader discarded reader
func DiscardReader(r io.Reader) {
	Copy(Discard, r)

	}
	if offset+length > totalLength {
		return -1, errInvalidArgument
	}

	if length == 0 {
		return 0, nil
	}

	reader := newParallelReader(readers, e, offset, totalLength)
	if len(prefer) == len(readers) {
		reader.preferReaders(prefer)
	}
	defer reader.Done()

	startBlock := offset / e.blockSize
	endBlock := (offset + length) / e.blockSize

	var bytesWritten int64
	var bufs [][]byte

func (v Versioning) PrefixesExcluded() bool {
	return len(v.ExcludedPrefixes) > 0 || v.ExcludeFolders
}

// ParseConfig - parses data in given reader to VersioningConfiguration.
func ParseConfig(reader io.Reader) (*Versioning, error) {
	var v Versioning
	if err := xml.NewDecoder(reader).Decode(&v); err != nil {
		return nil, err
	}
	if err := v.Validate(); err != nil {
		return nil, err
	}
	return &v, nil

 */
public class LineIteratorTest {

    /**
     * @throws Exception
     */
    @Test
    public void test() throws Exception {
        final StringReader reader = new StringReader("aaa\nbbb\nccc\n");
        final LineIterator it = new LineIterator(reader);
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("aaa"));
        assertThat(it.hasNext(), is(true));
        assertThat(it.next(), is("bbb"));