{"0o.01e3", 15.625},

		// octal mantissa, binary exponent
		{"0o0p+10", 0},
		{"-0o0p-10", -zero_},
		{"0o.12p6", 10},
		{"0o4p-3", 0.5},
		{"0o0014p-6", 0.1875},
		{"0o.001p9", 1},
		{"0o0.01p7", 2},
		{"0O0.01P+2", 0.0625},

		// hexadecimal mantissa and exponent
		{"0x0", 0},
		{"-0x0", -zero_},
		{"0x0p+10", 0},
		{"-0x0p-10", -zero_},
		{"0xff", 255},
		{"0X.8p1", 1},

		{FloatLit, "0x1.2gp1a", "0x1.2 gp1a", "hexadecimal mantissa requires a 'p' exponent"},
		{FloatLit, "0x0p", "0x0p", "exponent has no digits"},
		{FloatLit, "0xeP-", "0xeP-", "exponent has no digits"},
		{FloatLit, "0x1234PAB", "0x1234P AB", "exponent has no digits"},
		{FloatLit, "0x1.2p1a", "0x1.2p1 a", ""},

		{ImagLit, "0xf00.bap+12i", "0xf00.bap+12i", ""},

		// separators

	{"0.00e-01234567890123456789", "0", nil},
	{"-0e+01234567890123456789", "-0", nil},
	{"-0.00e-01234567890123456789", "-0", nil},
	{"0x0p+01234567890123456789", "0", nil},
	{"0x0.00p-01234567890123456789", "0", nil},
	{"-0x0p+01234567890123456789", "-0", nil},
	{"-0x0.00p-01234567890123456789", "-0", nil},

	{"0e291", "0", nil}, // issue 15364
	{"0e292", "0", nil}, // issue 15364
	{"0e347", "0", nil}, // issue 15364

		{Float, "0x1.2gp1a", "0x1.2 gp1a", "hexadecimal mantissa requires a 'p' exponent"},
		{Float, "0x0p", "0x0p", "exponent has no digits"},
		{Float, "0xeP-", "0xeP-", "exponent has no digits"},
		{Float, "0x1234PAB", "0x1234P AB", "exponent has no digits"},
		{Float, "0x1.2p1a", "0x1.2p1 a", ""},

		// separators
		{Int, "0b_1000_0001", "0b_1000_0001", ""},
		{Int, "0o_600", "0o_600", ""},
		{Int, "0_466", "0_466", ""},

package framer

import (
	"bytes"
	"errors"
	"io"
	"testing"
)

func TestRead(t *testing.T) {
	data := []byte{
		0x00, 0x00, 0x00, 0x04,
		0x01, 0x02, 0x03, 0x04,
		0x00, 0x00, 0x00, 0x03,
		0x05, 0x06, 0x07,
		0x00, 0x00, 0x00, 0x00,
		0x00, 0x00, 0x00, 0x01,
		0x08,
	}
	b := bytes.NewBuffer(data)
	r := NewLengthDelimitedFrameReader(io.NopCloser(b))
	buf := make([]byte, 1)

	{
		[]byte{
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
		[]byte{0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00},
		[]byte{0x92, 0x95, 0xb5, 0x9b, 0xb3, 0x84, 0x73, 0x6e}},
	{
		[]byte{
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,

		{token.FLOAT, "0x1.1e0", "0x1.1e0", "hexadecimal mantissa requires a 'p' exponent"},
		{token.FLOAT, "0x1.2gp1a", "0x1.2 gp1a", "hexadecimal mantissa requires a 'p' exponent"},
		{token.FLOAT, "0x0p", "0x0p", "exponent has no digits"},
		{token.FLOAT, "0xeP-", "0xeP-", "exponent has no digits"},
		{token.FLOAT, "0x1234PAB", "0x1234P AB", "exponent has no digits"},
		{token.FLOAT, "0x1.2p1a", "0x1.2p1 a", ""},

	// ±exponent
	exp -= int(flt.mantbits)
	if exp >= 0 {
		dst = append(dst, '+')
	}
	dst, _ = formatBits(dst, uint64(exp), 10, exp < 0, true)

	return dst
}

// %x: -0x1.yyyyyyyyp±ddd or -0x0p+0. (y is hex digit, d is decimal digit)
func fmtX(dst []byte, prec int, fmt byte, neg bool, mant uint64, exp int, flt *floatInfo) []byte {
	if mant == 0 {
		exp = 0
	}

			handler: &fakeHandler{
				responses: [][][]byte{{{
					0x00, 0x00, 0x00, 0x00, 0x0c, 0x00, 0x01, 0x00,
					0x6d, 0x65, 0x74, 0x72, 0x69, 0x63, 0x73, 0x00,
					0x0c, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00,
					0x00, 0x00, 0x00, 0x0c, 0x0c, 0x00, 0x03, 0x00,
					0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xf7,
					0x08, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x01,
				}}},
			},
			// expected calls: NFNL_MSG_ACCT_GET

		"empty.txt",
		"",
		[]byte{
			0x1f, 0x8b, 0x08, 0x08, 0xf7, 0x5e, 0x14, 0x4a,
			0x00, 0x03, 0x65, 0x6d, 0x70, 0x74, 0x79, 0x2e,
			0x74, 0x78, 0x74, 0x00, 0x03, 0x00, 0x00, 0x00,
			0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		},
		nil,
	},
	{
		"",
		"empty - with no file name",
		"",
		[]byte{
			0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88,
			0x00, 0xff, 0x01, 0x00, 0x00, 0xff, 0xff, 0x00,