Merge pull request ethereum#22 from QuarkChain/blob-test-p2-evm-staking

w3ip-02 test: evm contract code staking
zhiqiangxu · Feb 22, 2022 · 8035632 · 8035632
2 parents 8477ae0 + ff41c3a
commit 8035632
Showing 1 changed file with 132 additions and 0 deletions.
diff --git a/core/vm/evm_test.go b/core/vm/evm_test.go
@@ -0,0 +1,132 @@
+// 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/big"
+	"testing"
+
+	"github.com/ethereum/go-ethereum/common"
+	"github.com/ethereum/go-ethereum/common/hexutil"
+	"github.com/ethereum/go-ethereum/common/math"
+	"github.com/ethereum/go-ethereum/core/rawdb"
+	"github.com/ethereum/go-ethereum/core/state"
+	"github.com/ethereum/go-ethereum/params"
+)
+
+var contractCheckStakingTests = []struct {
+	codeSize uint
+	staked   int64
+	failure  error
+}{
+	{params.MaxCodeSizeSoft, 0, nil},                                                              // no need to stake
+	{params.MaxCodeSizeSoft + 1, 0, ErrCodeInsufficientStake},                                     //reading code size > threshold, need to stake
+	{params.MaxCodeSizeSoft + 1, int64(params.CodeStakingPerChunk - 1), ErrCodeInsufficientStake}, // not enough staking
+	{params.MaxCodeSizeSoft + 1, int64(params.CodeStakingPerChunk), nil},                          // barely enough staking
+	{params.MaxCodeSizeSoft * 2, int64(params.CodeStakingPerChunk), nil},
+	{params.MaxCodeSizeSoft*2 + 1, int64(params.CodeStakingPerChunk*2 - 1), ErrCodeInsufficientStake},
+	{params.MaxCodeSizeSoft*2 + 1, int64(params.CodeStakingPerChunk * 2), nil},
+}
+
+func TestContractCheckStakingW3IP002(t *testing.T) {
+	caddr := common.BytesToAddress([]byte("contract"))
+	calls := []string{"call", "callCode", "delegateCall"}
+	for _, callMethod := range calls {
+		for i, tt := range contractCheckStakingTests {
+			statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
+			statedb.CreateAccount(caddr)
+			statedb.SetCode(caddr, codegenWithSize(tt.codeSize))
+
+			vmctx := BlockContext{
+				BlockNumber: big.NewInt(0),
+				CanTransfer: func(_ StateDB, _ common.Address, toAmount *big.Int) bool {
+					return big.NewInt(tt.staked).Cmp(toAmount) >= 0
+				},
+				Transfer: func(StateDB, common.Address, common.Address, *big.Int) {},
+			}
+			vmenv := NewEVM(vmctx, TxContext{}, statedb, params.AllEthashProtocolChanges, Config{})
+
+			caller := AccountRef(caddr)
+			var err error
+			if callMethod == "call" {
+				_, _, err = vmenv.Call(AccountRef(common.Address{}), caddr, nil, math.MaxUint64, new(big.Int))
+			} else if callMethod == "callCode" {
+				_, _, err = vmenv.CallCode(caller, caddr, nil, math.MaxUint64, new(big.Int))
+			} else if callMethod == "delegateCall" {
+				_, _, err = vmenv.DelegateCall(NewContract(caller, caller, big.NewInt(0), 0), caddr, nil, math.MaxUint64)
+			} else {
+				panic("invalid call method")
+			}
+
+			if err != tt.failure {
+				t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
+			}
+		}
+	}
+}
+
+var createTests = []struct {
+	pushByte    byte
+	codeSizeHex string
+	staked      int64
+	usedGas     uint64
+	failure     error
+}{
+	{byte(PUSH1), "0xff", 0, 51030, nil},                                     // no need to stake
+	{byte(PUSH2), "0x6000", 0, 4918662, nil},                                 // no need to stake
+	{byte(PUSH2), "0x6001", 0, math.MaxUint64, ErrCodeInsufficientStake},     // code size > soft limit, have to stake
+	{byte(PUSH2), "0x6001", int64(params.CodeStakingPerChunk), 4918668, nil}, // staked
+	{byte(PUSH2), "0xc000", int64(params.CodeStakingPerChunk), 4924422, nil}, // size = soft limit * 2, creation gas capped
+	{byte(PUSH2), "0xc001", int64(params.CodeStakingPerChunk), math.MaxUint64, ErrCodeInsufficientStake},
+	{byte(PUSH2), "0xc001", int64(params.CodeStakingPerChunk*2 - 1), math.MaxUint64, ErrCodeInsufficientStake},
+	{byte(PUSH2), "0xc001", int64(params.CodeStakingPerChunk * 2), 4924431, nil},
+}
+
+func TestCreateW3IP002(t *testing.T) {
+	addr := common.BytesToAddress([]byte("caller"))
+	for i, tt := range createTests {
+		statedb, _ := state.New(common.Hash{}, state.NewDatabase(rawdb.NewMemoryDatabase()), nil)
+
+		// PUSHx <size>, PUSH1 00, RETURN
+		// to manipulate how much data should be stored as code
+		code := []byte{tt.pushByte}
+		code = append(code, hexutil.MustDecode(tt.codeSizeHex)...)
+		code = append(code, hexutil.MustDecode("0x6000f3")...) // PUSH1 00, RETURN
+
+		vmctx := BlockContext{
+			BlockNumber: big.NewInt(0),
+			CanTransfer: func(_ StateDB, _ common.Address, toAmount *big.Int) bool {
+				return big.NewInt(tt.staked).Cmp(toAmount) >= 0
+			},
+			Transfer: func(StateDB, common.Address, common.Address, *big.Int) {},
+		}
+		vmenv := NewEVM(vmctx, TxContext{}, statedb, params.AllEthashProtocolChanges, Config{})
+
+		_, _, leftOverGas, err := vmenv.Create(
+			AccountRef(addr),
+			code,
+			math.MaxUint64,
+			big.NewInt(0),
+		)
+		if err != tt.failure {
+			t.Errorf("test %d: failure mismatch: have %v, want %v", i, err, tt.failure)
+		}
+		if used := math.MaxUint64 - leftOverGas; used != tt.usedGas {
+			t.Errorf("test %d: gas used mismatch: have %v, want %v", i, used, tt.usedGas)
+		}
+	}
+}