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// Copyright 2021 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package rlpx
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/stretchr/testify/assert"
)
func TestReadBufferReset(t *testing.T) {
reader := bytes.NewReader(hexutil.MustDecode("0x010202030303040505"))
var b readBuffer
s1, _ := b.read(reader, 1)
s2, _ := b.read(reader, 2)
s3, _ := b.read(reader, 3)
assert.Equal(t, []byte{1}, s1)
assert.Equal(t, []byte{2, 2}, s2)
assert.Equal(t, []byte{3, 3, 3}, s3)
b.reset()
s4, _ := b.read(reader, 1)
s5, _ := b.read(reader, 2)
assert.Equal(t, []byte{4}, s4)
assert.Equal(t, []byte{5, 5}, s5)
s6, err := b.read(reader, 2)
assert.EqualError(t, err, "EOF")
assert.Nil(t, s6)
}