// 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 "testing"

func TestMemoryGasCost(t *testing.T) {
	tests := []struct {
		size     uint64
		cost     uint64
		overflow bool
	}{
		{0x1fffffffe0, 36028809887088637, false},
		{0x1fffffffe1, 0, true},
	}
	for i, tt := range tests {
		v, err := memoryGasCost(&Memory{}, tt.size)
		if (err == errGasUintOverflow) != tt.overflow {
			t.Errorf("test %d: overflow mismatch: have %v, want %v", i, err == errGasUintOverflow, tt.overflow)
		}
		if v != tt.cost {
			t.Errorf("test %d: gas cost mismatch: have %v, want %v", i, v, tt.cost)
		}
	}
}