// to accumulate the text of a file.
func readLines(b *Reader) string {
	s := ""
	for {
		s1, err := b.ReadString('\n')
		if err == io.EOF {
			break
		}
		if err != nil && err != iotest.ErrTimeout {
			panic("GetLines: " + err.Error())
		}
		s += s1
	}
	return s
}

// Call Read to accumulate the text of a file
func reads(buf *Reader, m int) string {
	var b [1000]byte
	nb := 0
	for {