buf := make([]byte, 1<<16)
			for i := 0; i < len(buf); i += skip {
				buf[i] = 1
			}
			for i := 0; i < b.N; i++ {
				Index(buf, key)
			}
		})
	}
}

func TestClone(t *testing.T) {
	var cloneTests = [][]byte{
		[]byte(nil),
		[]byte{},
		Clone([]byte{}),
		[]byte(strings.Repeat("a", 42))[:0],
		[]byte(strings.Repeat("a", 42))[:0:0],
		[]byte("short"),