// Copyright 2026 The Erigon Authors
// This file is part of Erigon.
//
// Erigon 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.
//
// Erigon 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 Erigon. If not, see <http://www.gnu.org/licenses/>.

package pool

import (
	"testing"

	"github.com/stretchr/testify/require"
)

func TestGetBufferReturnsEmptyBuffer(t *testing.T) {
	buf := GetBuffer()
	buf.WriteString("dirty")
	PutBuffer(buf)

	fresh := GetBuffer()
	defer PutBuffer(fresh)
	require.Zero(t, fresh.Len())
}

func TestPutBufferDropsOversized(t *testing.T) {
	buf := GetBuffer()
	buf.Grow(maxBufferCap + 1)
	require.Greater(t, buf.Cap(), maxBufferCap)
	PutBuffer(buf)

	// Any buffer obtained from the pool now must be within the cap limit.
	fresh := GetBuffer()
	defer PutBuffer(fresh)
	require.LessOrEqual(t, fresh.Cap(), maxBufferCap)
}
