t.Run("IEEE", func(t *testing.T) {
		for _, g := range golden {
			h := New(IEEETable)
			h2 := New(IEEETable)

			io.WriteString(h, g.in[:len(g.in)/2])

			state, err := h.(encoding.BinaryMarshaler).MarshalBinary()
			if err != nil {
				t.Errorf("could not marshal: %v", err)
				continue
			}

			if string(state) != g.halfStateIEEE {

		if !ok {
			return errInvalidOID
		}
		der = appendBase128BigInt(der, b)
	}

	o.der = der
	return nil
}

// MarshalBinary implements [encoding.BinaryMarshaler]
func (o OID) MarshalBinary() ([]byte, error) {
	return bytes.Clone(o.der), nil
}

// UnmarshalBinary implements [encoding.BinaryUnmarshaler]
func (o *OID) UnmarshalBinary(b []byte) error {

	}

	for _, tt := range cases {
		if eq := tt.oid.Equal(tt.oid2); eq != tt.eq {
			t.Errorf("(%v).Equal(%v) = %v, want %v", tt.oid, tt.oid2, eq, tt.eq)
		}
	}
}

var (
	_ encoding.BinaryMarshaler   = OID{}
	_ encoding.BinaryUnmarshaler = new(OID)
	_ encoding.TextMarshaler     = OID{}
	_ encoding.TextUnmarshaler   = new(OID)
)

func TestOIDMarshal(t *testing.T) {
	cases := []struct {

		byteorder.BePutUint64(b[:8], ip.addr.hi)
		byteorder.BePutUint64(b[8:], ip.addr.lo)
		copy(b[16:], z)
	}
	return b
}

// MarshalBinary implements the [encoding.BinaryMarshaler] interface.
// It returns a zero-length slice for the zero [Addr],
// the 4-byte form for an IPv4 address,
// and the 16-byte form with zone appended for an IPv6 address.