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Copy pathdual_state_test.go
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dual_state_test.go
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package core
import (
"math/big"
"testing"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/params"
)
var dualStateTestHeader = types.Header{
Number: new(big.Int),
Time: 43,
Difficulty: new(big.Int).SetUint64(1000488),
GasLimit: 4700000,
}
//[1] PUSH1 0x01 (out size)
//[3] PUSH1 0x00 (out offset)
//[5] PUSH1 0x00 (in size)
//[7] PUSH1 0x00 (in offset)
//[9] PUSH1 0x00 (value)
//[30] PUSH20 0x0200000000000000000000000000000000000000 (to)
//[34] PUSH3 0x0186a0 (gas)
//[35] CALL
//[37] PUSH1 0x00
//[38] MLOAD
//[40] PUSH1 0x00
//[41] SSTORE
//[42] STOP
func TestDualStatePrivateToPublicCall(t *testing.T) {
callAddr := common.Address{1}
db := rawdb.NewMemoryDatabase()
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(common.Address{2}, common.Hex2Bytes("600a6000526001601ff300"))
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
privateState.SetCode(callAddr, common.Hex2Bytes("60016000600060006000730200000000000000000000000000000000000000620186a0f160005160005500"))
author := common.Address{}
msg := callmsg{
addr: author,
to: &callAddr,
value: big.NewInt(1),
gas: 1000000,
gasPrice: new(big.Int),
data: nil,
}
ctx := NewEVMBlockContext(&dualStateTestHeader, nil, &author)
txCtx := NewEVMTxContext(msg)
env := vm.NewEVM(ctx, txCtx, publicState, privateState, ¶ms.ChainConfig{}, vm.Config{})
env.Call(vm.AccountRef(author), callAddr, msg.data, msg.gas, new(big.Int))
if value := privateState.GetState(callAddr, common.Hash{}); value != (common.Hash{10}) {
t.Errorf("expected 10 got %x", value)
}
}
func TestDualStatePublicToPrivateCall(t *testing.T) {
callAddr := common.Address{1}
db := rawdb.NewMemoryDatabase()
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
privateState.SetCode(common.Address{2}, common.Hex2Bytes("600a6000526001601ff300"))
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(callAddr, common.Hex2Bytes("60016000600060006000730200000000000000000000000000000000000000620186a0f160005160005500"))
author := common.Address{}
msg := callmsg{
addr: author,
to: &callAddr,
value: big.NewInt(1),
gas: 1000000,
gasPrice: new(big.Int),
data: nil,
}
ctx := NewEVMBlockContext(&dualStateTestHeader, nil, &author)
txCtx := NewEVMTxContext(msg)
env := vm.NewEVM(ctx, txCtx, publicState, publicState, ¶ms.ChainConfig{}, vm.Config{})
env.Call(vm.AccountRef(author), callAddr, msg.data, msg.gas, new(big.Int))
if value := publicState.GetState(callAddr, common.Hash{}); value != (common.Hash{}) {
t.Errorf("expected 0 got %x", value)
}
}
func TestDualStateReadOnly(t *testing.T) {
callAddr := common.Address{1}
db := rawdb.NewMemoryDatabase()
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(common.Address{2}, common.Hex2Bytes("600a60005500"))
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
privateState.SetCode(callAddr, common.Hex2Bytes("60016000600060006000730200000000000000000000000000000000000000620186a0f160005160005500"))
author := common.Address{}
msg := callmsg{
addr: author,
to: &callAddr,
value: big.NewInt(1),
gas: 1000000,
gasPrice: new(big.Int),
data: nil,
}
ctx := NewEVMBlockContext(&dualStateTestHeader, nil, &author)
txCtx := NewEVMTxContext(msg)
env := vm.NewEVM(ctx, txCtx, publicState, privateState, ¶ms.ChainConfig{}, vm.Config{})
env.Call(vm.AccountRef(author), callAddr, msg.data, msg.gas, new(big.Int))
if value := publicState.GetState(common.Address{2}, common.Hash{}); value != (common.Hash{0}) {
t.Errorf("expected 0 got %x", value)
}
}
var (
calleeAddress = common.Address{2}
calleeContractCode = "600a6000526001601ff300" // a function that returns 10
callerAddress = common.Address{1}
// a functionn that calls the callee's function at its address and return the same value
//000000: PUSH1 0x01
//000002: PUSH1 0x00
//000004: PUSH1 0x00
//000006: PUSH1 0x00
//000008: PUSH20 0x0200000000000000000000000000000000000000
//000029: PUSH3 0x0186a0
//000033: STATICCALL
//000034: PUSH1 0x01
//000036: PUSH1 0x00
//000038: RETURN
//000039: STOP
callerContractCode = "6001600060006000730200000000000000000000000000000000000000620186a0fa60016000f300"
)
func verifyStaticCall(t *testing.T, privateState *state.StateDB, publicState *state.StateDB, expectedHash common.Hash) {
author := common.Address{}
msg := callmsg{
addr: author,
to: &callerAddress,
value: big.NewInt(1),
gas: 1000000,
gasPrice: new(big.Int),
data: nil,
}
ctx := NewEVMBlockContext(&dualStateTestHeader, nil, &author)
txCtx := NewEVMTxContext(msg)
env := vm.NewEVM(ctx, txCtx, publicState, privateState, ¶ms.ChainConfig{
ByzantiumBlock: new(big.Int),
}, vm.Config{})
ret, _, err := env.Call(vm.AccountRef(author), callerAddress, msg.data, msg.gas, new(big.Int))
if err != nil {
t.Fatalf("Call error: %s", err)
}
value := common.Hash{ret[0]}
if value != expectedHash {
t.Errorf("expected %x got %x", expectedHash, value)
}
}
func TestStaticCall_whenPublicToPublic(t *testing.T) {
db := rawdb.NewMemoryDatabase()
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(callerAddress, common.Hex2Bytes(callerContractCode))
publicState.SetCode(calleeAddress, common.Hex2Bytes(calleeContractCode))
verifyStaticCall(t, publicState, publicState, common.Hash{10})
}
func TestStaticCall_whenPublicToPrivateInTheParty(t *testing.T) {
db := rawdb.NewMemoryDatabase()
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
privateState.SetCode(calleeAddress, common.Hex2Bytes(calleeContractCode))
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(callerAddress, common.Hex2Bytes(callerContractCode))
verifyStaticCall(t, privateState, publicState, common.Hash{10})
}
func TestStaticCall_whenPublicToPrivateNotInTheParty(t *testing.T) {
db := rawdb.NewMemoryDatabase()
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(callerAddress, common.Hex2Bytes(callerContractCode))
verifyStaticCall(t, privateState, publicState, common.Hash{0})
}
func TestStaticCall_whenPrivateToPublic(t *testing.T) {
db := rawdb.NewMemoryDatabase()
privateState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
privateState.SetCode(callerAddress, common.Hex2Bytes(callerContractCode))
publicState, _ := state.New(common.Hash{}, state.NewDatabase(db), nil)
publicState.SetCode(calleeAddress, common.Hex2Bytes(calleeContractCode))
verifyStaticCall(t, privateState, publicState, common.Hash{10})
}