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- // 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"
- "math/big"
- "testing"
- "github.com/ethereum/go-ethereum/common"
- "github.com/ethereum/go-ethereum/common/hexutil"
- "github.com/ethereum/go-ethereum/core/rawdb"
- "github.com/ethereum/go-ethereum/core/state"
- "github.com/ethereum/go-ethereum/params"
- )
- 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)
- }
- }
- }
- var eip2200Tests = []struct {
- original byte
- gaspool uint64
- input string
- used uint64
- refund uint64
- failure error
- }{
- {0, math.MaxUint64, "0x60006000556000600055", 1612, 0, nil}, // 0 -> 0 -> 0
- {0, math.MaxUint64, "0x60006000556001600055", 20812, 0, nil}, // 0 -> 0 -> 1
- {0, math.MaxUint64, "0x60016000556000600055", 20812, 19200, nil}, // 0 -> 1 -> 0
- {0, math.MaxUint64, "0x60016000556002600055", 20812, 0, nil}, // 0 -> 1 -> 2
- {0, math.MaxUint64, "0x60016000556001600055", 20812, 0, nil}, // 0 -> 1 -> 1
- {1, math.MaxUint64, "0x60006000556000600055", 5812, 15000, nil}, // 1 -> 0 -> 0
- {1, math.MaxUint64, "0x60006000556001600055", 5812, 4200, nil}, // 1 -> 0 -> 1
- {1, math.MaxUint64, "0x60006000556002600055", 5812, 0, nil}, // 1 -> 0 -> 2
- {1, math.MaxUint64, "0x60026000556000600055", 5812, 15000, nil}, // 1 -> 2 -> 0
- {1, math.MaxUint64, "0x60026000556003600055", 5812, 0, nil}, // 1 -> 2 -> 3
- {1, math.MaxUint64, "0x60026000556001600055", 5812, 4200, nil}, // 1 -> 2 -> 1
- {1, math.MaxUint64, "0x60026000556002600055", 5812, 0, nil}, // 1 -> 2 -> 2
- {1, math.MaxUint64, "0x60016000556000600055", 5812, 15000, nil}, // 1 -> 1 -> 0
- {1, math.MaxUint64, "0x60016000556002600055", 5812, 0, nil}, // 1 -> 1 -> 2
- {1, math.MaxUint64, "0x60016000556001600055", 1612, 0, nil}, // 1 -> 1 -> 1
- {0, math.MaxUint64, "0x600160005560006000556001600055", 40818, 19200, nil}, // 0 -> 1 -> 0 -> 1
- {1, math.MaxUint64, "0x600060005560016000556000600055", 10818, 19200, nil}, // 1 -> 0 -> 1 -> 0
- {1, 2306, "0x6001600055", 2306, 0, ErrOutOfGas}, // 1 -> 1 (2300 sentry + 2xPUSH)
- {1, 2307, "0x6001600055", 806, 0, nil}, // 1 -> 1 (2301 sentry + 2xPUSH)
- }
- func TestEIP2200(t *testing.T) {
- for i, tt := range eip2200Tests {
- address := common.BytesToAddress([]byte("contract"))
- statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
- statedb.CreateAccount(address)
- statedb.SetCode(address, hexutil.MustDecode(tt.input))
- statedb.SetState(address, common.Hash{}, common.BytesToHash([]byte{tt.original}))
- statedb.Finalise(true) // Push the state into the "original" slot
- vmctx := BlockContext{
- CanTransfer: func(StateDB, common.Address, *big.Int) bool { return true },
- Transfer: func(StateDB, common.Address, common.Address, *big.Int) {},
- }
- vmenv := NewEVM(vmctx, TxContext{}, statedb, statedb, params.AllEthashProtocolChanges, Config{ExtraEips: []int{2200}})
- _, gas, err := vmenv.Call(AccountRef(common.Address{}), address, nil, tt.gaspool, new(big.Int))
- if err != tt.failure {
- t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
- }
- if used := tt.gaspool - gas; used != tt.used {
- t.Errorf("test %d: gas used mismatch: have %v, want %v", i, used, tt.used)
- }
- if refund := vmenv.StateDB.GetRefund(); refund != tt.refund {
- t.Errorf("test %d: gas refund mismatch: have %v, want %v", i, refund, tt.refund)
- }
- }
- }
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