gitlab.com/flarenetwork/coreth@v0.1.1/core/vm/gas_table_test.go (about)

     1  // (c) 2019-2020, Ava Labs, Inc.
     2  //
     3  // This file is a derived work, based on the go-ethereum library whose original
     4  // notices appear below.
     5  //
     6  // It is distributed under a license compatible with the licensing terms of the
     7  // original code from which it is derived.
     8  //
     9  // Much love to the original authors for their work.
    10  // **********
    11  // Copyright 2017 The go-ethereum Authors
    12  // This file is part of the go-ethereum library.
    13  //
    14  // The go-ethereum library is free software: you can redistribute it and/or modify
    15  // it under the terms of the GNU Lesser General Public License as published by
    16  // the Free Software Foundation, either version 3 of the License, or
    17  // (at your option) any later version.
    18  //
    19  // The go-ethereum library is distributed in the hope that it will be useful,
    20  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    21  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    22  // GNU Lesser General Public License for more details.
    23  //
    24  // You should have received a copy of the GNU Lesser General Public License
    25  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    26  
    27  package vm
    28  
    29  import (
    30  	"math"
    31  	"math/big"
    32  	"testing"
    33  
    34  	"github.com/ethereum/go-ethereum/common"
    35  	"github.com/ethereum/go-ethereum/common/hexutil"
    36  	"gitlab.com/flarenetwork/coreth/core/rawdb"
    37  	"gitlab.com/flarenetwork/coreth/core/state"
    38  	"gitlab.com/flarenetwork/coreth/params"
    39  )
    40  
    41  func TestMemoryGasCost(t *testing.T) {
    42  	tests := []struct {
    43  		size     uint64
    44  		cost     uint64
    45  		overflow bool
    46  	}{
    47  		{0x1fffffffe0, 36028809887088637, false},
    48  		{0x1fffffffe1, 0, true},
    49  	}
    50  	for i, tt := range tests {
    51  		v, err := memoryGasCost(&Memory{}, tt.size)
    52  		if (err == ErrGasUintOverflow) != tt.overflow {
    53  			t.Errorf("test %d: overflow mismatch: have %v, want %v", i, err == ErrGasUintOverflow, tt.overflow)
    54  		}
    55  		if v != tt.cost {
    56  			t.Errorf("test %d: gas cost mismatch: have %v, want %v", i, v, tt.cost)
    57  		}
    58  	}
    59  }
    60  
    61  var eip2200Tests = []struct {
    62  	original byte
    63  	gaspool  uint64
    64  	input    string
    65  	used     uint64
    66  	refund   uint64
    67  	failure  error
    68  }{
    69  	{0, math.MaxUint64, "0x60006000556000600055", 1612, 0, nil},                // 0 -> 0 -> 0
    70  	{0, math.MaxUint64, "0x60006000556001600055", 20812, 0, nil},               // 0 -> 0 -> 1
    71  	{0, math.MaxUint64, "0x60016000556000600055", 20812, 19200, nil},           // 0 -> 1 -> 0
    72  	{0, math.MaxUint64, "0x60016000556002600055", 20812, 0, nil},               // 0 -> 1 -> 2
    73  	{0, math.MaxUint64, "0x60016000556001600055", 20812, 0, nil},               // 0 -> 1 -> 1
    74  	{1, math.MaxUint64, "0x60006000556000600055", 5812, 15000, nil},            // 1 -> 0 -> 0
    75  	{1, math.MaxUint64, "0x60006000556001600055", 5812, 4200, nil},             // 1 -> 0 -> 1
    76  	{1, math.MaxUint64, "0x60006000556002600055", 5812, 0, nil},                // 1 -> 0 -> 2
    77  	{1, math.MaxUint64, "0x60026000556000600055", 5812, 15000, nil},            // 1 -> 2 -> 0
    78  	{1, math.MaxUint64, "0x60026000556003600055", 5812, 0, nil},                // 1 -> 2 -> 3
    79  	{1, math.MaxUint64, "0x60026000556001600055", 5812, 4200, nil},             // 1 -> 2 -> 1
    80  	{1, math.MaxUint64, "0x60026000556002600055", 5812, 0, nil},                // 1 -> 2 -> 2
    81  	{1, math.MaxUint64, "0x60016000556000600055", 5812, 15000, nil},            // 1 -> 1 -> 0
    82  	{1, math.MaxUint64, "0x60016000556002600055", 5812, 0, nil},                // 1 -> 1 -> 2
    83  	{1, math.MaxUint64, "0x60016000556001600055", 1612, 0, nil},                // 1 -> 1 -> 1
    84  	{0, math.MaxUint64, "0x600160005560006000556001600055", 40818, 19200, nil}, // 0 -> 1 -> 0 -> 1
    85  	{1, math.MaxUint64, "0x600060005560016000556000600055", 10818, 19200, nil}, // 1 -> 0 -> 1 -> 0
    86  	{1, 2306, "0x6001600055", 2306, 0, ErrOutOfGas},                            // 1 -> 1 (2300 sentry + 2xPUSH)
    87  	{1, 2307, "0x6001600055", 806, 0, nil},                                     // 1 -> 1 (2301 sentry + 2xPUSH)
    88  }
    89  
    90  func TestEIP2200(t *testing.T) {
    91  	for i, tt := range eip2200Tests {
    92  		address := common.BytesToAddress([]byte("contract"))
    93  
    94  		statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
    95  		statedb.CreateAccount(address)
    96  		statedb.SetCode(address, hexutil.MustDecode(tt.input))
    97  		statedb.SetState(address, common.Hash{}, common.BytesToHash([]byte{tt.original}))
    98  		statedb.Finalise(true) // Push the state into the "original" slot
    99  
   100  		vmctx := BlockContext{
   101  			CanTransfer: func(StateDB, common.Address, *big.Int) bool { return true },
   102  			Transfer:    func(StateDB, common.Address, common.Address, *big.Int) {},
   103  		}
   104  		vmenv := NewEVM(vmctx, TxContext{}, statedb, params.TestChainConfig, Config{ExtraEips: []int{2200}})
   105  
   106  		_, gas, err := vmenv.Call(AccountRef(common.Address{}), address, nil, tt.gaspool, new(big.Int))
   107  		if err != tt.failure {
   108  			t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
   109  		}
   110  		if used := tt.gaspool - gas; used != tt.used {
   111  			t.Errorf("test %d: gas used mismatch: have %v, want %v", i, used, tt.used)
   112  		}
   113  		if refund := vmenv.StateDB.GetRefund(); refund != tt.refund {
   114  			t.Errorf("test %d: gas refund mismatch: have %v, want %v", i, refund, tt.refund)
   115  		}
   116  	}
   117  }