// Copyright 2017 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 vm

import (
	"math"
	"testing"
)

func TestMemoryGasCost(t *testing.T) {
	size := uint64(math.MaxUint64 - 64)
	_, err := memoryGasCost(&Memory{}, size)
	if err != nil {
		t.Error("didn't expect error:", err)
	}

	_, err = memoryGasCost(&Memory{}, size+32)
	if err != nil {
		t.Error("didn't expect error:", err)
	}

	_, err = memoryGasCost(&Memory{}, size+33)
	if err == nil {
		t.Error("expected error")
	}
}