public void testOpenStream() throws IOException {
    Reader reader = source.openStream();

    StringWriter writer = new StringWriter();
    char[] buf = new char[64];
    int read;
    while ((read = reader.read(buf)) != -1) {
      writer.write(buf, 0, read);
    }
    reader.close();
    writer.close();

    assertExpectedString(writer.toString());
  }

  public void testOpenBufferedStream() throws IOException {

    /** The next byte to read. This is always less than or equal to [upstreamPos]. */
    private var sourcePos = 0L

    /**
     * Selects where to find the bytes for a read and read them. This is one of three sources.
     *
     * ## Upstream
     *
     * In this case the current thread is assigned as the upstream reader. We read bytes from

      int off = (int) expectedSize - remaining;
      int read = in.read(bytes, off, remaining);
      if (read == -1) {
        // end of stream before reading expectedSize bytes
        // just return the bytes read so far
        return Arrays.copyOf(bytes, off);
      }
      remaining -= read;
    }

    // bytes is now full
    int b = in.read();
    if (b == -1) {
      return bytes;
    }

            if (peekc == '\r') {
                peekc = read();
                if (peekc == '\n') {
                    peekc = read();
                }
            } else {
                peekc = read();
            }
            if (peekc < 0) {
                ttype = TT_EOF;
                return true;
            }
            peekct = peekc < 256 ? ctype[peekc] : CT_ALPHA;

			b = append(b, 0)[:len(b)]
		}
		n, err := r.Read(b[len(b):cap(b)])
		b = b[:len(b)+n]
		if err != nil {
			if errors.Is(err, io.EOF) {
				if want >= 0 && read+int64(n) != want {
					return nil, io.ErrUnexpectedEOF
				}
				err = nil
			}
			return b, err
		}
		read += int64(n)
		if want >= 0 && read == want {
			// No need to read more...
			return b, nil
		}
	}
}

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rb.Write(data)
		rb.Read(buf)
	}
}

func BenchmarkRingBuffer_AsyncRead(b *testing.B) {
	// Pretty useless benchmark, but it's here for completeness.
	rb := New(1024)
	data := []byte(strings.Repeat("a", 512))
	buf := make([]byte, 512)

	go func() {
		for {
			rb.Read(buf)
		}
	}()

	b.ResetTimer()
	for i := 0; i < b.N; i++ {
		rb.Write(data)

		defer deadlineconn.Close()

		// Read a line
		b := make([]byte, 12)
		_, terr = deadlineconn.Read(b)
		if terr != nil {
			t.Errorf("failed to read from client. %v", terr)
			return
		}
		received := string(b)
		if received != "message one\n" {
			t.Errorf(`server: expected: "message one\n", got: %v`, received)
			return
		}

		// Wait for more than read timeout to simulate processing.

// DeadlineConn - is a generic stream-oriented network connection supporting buffered reader and read/write timeout.
type DeadlineConn struct {
	net.Conn
	readDeadline  time.Duration // sets the read deadline on a connection.
	readSetAt     time.Time
	writeDeadline time.Duration // sets the write deadline on a connection.
	writeSetAt    time.Time
}

// Sets read deadline
func (c *DeadlineConn) setReadDeadline() {
	if c.readDeadline > 0 {

		up -d --build

	add_alias

	mc mb minio/minio-test/
	mc cp ./minio minio/minio-test/to-read/
	mc cp /etc/hosts minio/minio-test/to-read/hosts
	mc anonymous set download minio/minio-test

	verify_checksum_mc ./minio minio/minio-test/to-read/minio

	curl -s http://127.0.0.1:9000/minio-test/to-read/hosts | sha256sum

	MINIO_VERSION=dev /tmp/gopath/bin/docker-compose -f "buildscripts/upgrade-tests/compose.yml" stop
}

				// Read last byte of object
				fmt.Sprintf("bytes=-%d", 1),
				// Read all but first byte of object
				"bytes=1-",
				// Read first half of object
				fmt.Sprintf("bytes=%d-%d", 0, objLen/2),
				// Read last half of object
				fmt.Sprintf("bytes=-%d", objLen/2),
				// Read middle half of object
				fmt.Sprintf("bytes=%d-%d", objLen/4, objLen*3/4),
				// Read 100MiB of the object from the beginning