580 lines
17 KiB
Go
580 lines
17 KiB
Go
package statedb_test
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import (
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"math/big"
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"testing"
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"github.com/cerc-io/laconicd/x/evm/statedb"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/ethereum/go-ethereum/common"
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ethtypes "github.com/ethereum/go-ethereum/core/types"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/stretchr/testify/suite"
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)
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var (
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address common.Address = common.BigToAddress(big.NewInt(101))
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address2 common.Address = common.BigToAddress(big.NewInt(102))
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address3 common.Address = common.BigToAddress(big.NewInt(103))
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blockHash common.Hash = common.BigToHash(big.NewInt(9999))
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emptyTxConfig statedb.TxConfig = statedb.NewEmptyTxConfig(blockHash)
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)
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type StateDBTestSuite struct {
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suite.Suite
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}
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func (suite *StateDBTestSuite) TestAccount() {
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key1 := common.BigToHash(big.NewInt(1))
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value1 := common.BigToHash(big.NewInt(2))
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key2 := common.BigToHash(big.NewInt(3))
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value2 := common.BigToHash(big.NewInt(4))
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testCases := []struct {
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name string
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malleate func(*statedb.StateDB)
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}{
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{"non-exist account", func(db *statedb.StateDB) {
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suite.Require().Equal(false, db.Exist(address))
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suite.Require().Equal(true, db.Empty(address))
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suite.Require().Equal(big.NewInt(0), db.GetBalance(address))
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suite.Require().Equal([]byte(nil), db.GetCode(address))
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suite.Require().Equal(common.Hash{}, db.GetCodeHash(address))
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suite.Require().Equal(uint64(0), db.GetNonce(address))
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}},
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{"empty account", func(db *statedb.StateDB) {
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db.CreateAccount(address)
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suite.Require().NoError(db.Commit())
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keeper := db.Keeper().(*MockKeeper)
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acct := keeper.accounts[address]
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suite.Require().Equal(statedb.NewEmptyAccount(), &acct.account)
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suite.Require().Empty(acct.states)
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suite.Require().False(acct.account.IsContract())
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db = statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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suite.Require().Equal(true, db.Exist(address))
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suite.Require().Equal(true, db.Empty(address))
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suite.Require().Equal(big.NewInt(0), db.GetBalance(address))
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suite.Require().Equal([]byte(nil), db.GetCode(address))
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suite.Require().Equal(common.BytesToHash(emptyCodeHash), db.GetCodeHash(address))
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suite.Require().Equal(uint64(0), db.GetNonce(address))
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}},
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{"suicide", func(db *statedb.StateDB) {
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// non-exist account.
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suite.Require().False(db.Suicide(address))
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suite.Require().False(db.HasSuicided(address))
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// create a contract account
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db.CreateAccount(address)
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db.SetCode(address, []byte("hello world"))
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db.AddBalance(address, big.NewInt(100))
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db.SetState(address, key1, value1)
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db.SetState(address, key2, value2)
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suite.Require().NoError(db.Commit())
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// suicide
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db = statedb.New(sdk.Context{}, db.Keeper(), emptyTxConfig)
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suite.Require().False(db.HasSuicided(address))
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suite.Require().True(db.Suicide(address))
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// check dirty state
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suite.Require().True(db.HasSuicided(address))
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// balance is cleared
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suite.Require().Equal(big.NewInt(0), db.GetBalance(address))
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// but code and state are still accessible in dirty state
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suite.Require().Equal(value1, db.GetState(address, key1))
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suite.Require().Equal([]byte("hello world"), db.GetCode(address))
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suite.Require().NoError(db.Commit())
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// not accessible from StateDB anymore
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db = statedb.New(sdk.Context{}, db.Keeper(), emptyTxConfig)
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suite.Require().False(db.Exist(address))
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// and cleared in keeper too
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keeper := db.Keeper().(*MockKeeper)
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suite.Require().Empty(keeper.accounts)
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suite.Require().Empty(keeper.codes)
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}},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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keeper := NewMockKeeper()
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db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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tc.malleate(db)
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})
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}
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}
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func (suite *StateDBTestSuite) TestAccountOverride() {
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keeper := NewMockKeeper()
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db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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// test balance carry over when overwritten
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amount := big.NewInt(1)
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// init an EOA account, account overriden only happens on EOA account.
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db.AddBalance(address, amount)
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db.SetNonce(address, 1)
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// override
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db.CreateAccount(address)
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// check balance is not lost
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suite.Require().Equal(amount, db.GetBalance(address))
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// but nonce is reset
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suite.Require().Equal(uint64(0), db.GetNonce(address))
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}
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func (suite *StateDBTestSuite) TestDBError() {
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testCases := []struct {
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name string
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malleate func(vm.StateDB)
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}{
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{"set account", func(db vm.StateDB) {
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db.SetNonce(errAddress, 1)
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}},
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{"delete account", func(db vm.StateDB) {
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db.SetNonce(errAddress, 1)
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suite.Require().True(db.Suicide(errAddress))
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}},
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}
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for _, tc := range testCases {
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db := statedb.New(sdk.Context{}, NewMockKeeper(), emptyTxConfig)
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tc.malleate(db)
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suite.Require().Error(db.Commit())
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}
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}
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func (suite *StateDBTestSuite) TestBalance() {
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// NOTE: no need to test overflow/underflow, that is guaranteed by evm implementation.
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testCases := []struct {
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name string
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malleate func(*statedb.StateDB)
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expBalance *big.Int
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}{
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{"add balance", func(db *statedb.StateDB) {
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db.AddBalance(address, big.NewInt(10))
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}, big.NewInt(10)},
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{"sub balance", func(db *statedb.StateDB) {
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db.AddBalance(address, big.NewInt(10))
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// get dirty balance
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suite.Require().Equal(big.NewInt(10), db.GetBalance(address))
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db.SubBalance(address, big.NewInt(2))
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}, big.NewInt(8)},
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{"add zero balance", func(db *statedb.StateDB) {
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db.AddBalance(address, big.NewInt(0))
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}, big.NewInt(0)},
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{"sub zero balance", func(db *statedb.StateDB) {
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db.SubBalance(address, big.NewInt(0))
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}, big.NewInt(0)},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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keeper := NewMockKeeper()
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db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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tc.malleate(db)
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// check dirty state
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suite.Require().Equal(tc.expBalance, db.GetBalance(address))
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suite.Require().NoError(db.Commit())
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// check committed balance too
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suite.Require().Equal(tc.expBalance, keeper.accounts[address].account.Balance)
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})
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}
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}
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func (suite *StateDBTestSuite) TestState() {
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key1 := common.BigToHash(big.NewInt(1))
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value1 := common.BigToHash(big.NewInt(1))
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testCases := []struct {
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name string
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malleate func(*statedb.StateDB)
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expStates statedb.Storage
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}{
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{"empty state", func(db *statedb.StateDB) {
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}, nil},
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{"set empty value", func(db *statedb.StateDB) {
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db.SetState(address, key1, common.Hash{})
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}, statedb.Storage{}},
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{"noop state change", func(db *statedb.StateDB) {
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db.SetState(address, key1, value1)
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db.SetState(address, key1, common.Hash{})
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}, statedb.Storage{}},
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{"set state", func(db *statedb.StateDB) {
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// check empty initial state
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suite.Require().Equal(common.Hash{}, db.GetState(address, key1))
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suite.Require().Equal(common.Hash{}, db.GetCommittedState(address, key1))
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// set state
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db.SetState(address, key1, value1)
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// query dirty state
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suite.Require().Equal(value1, db.GetState(address, key1))
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// check committed state is still not exist
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suite.Require().Equal(common.Hash{}, db.GetCommittedState(address, key1))
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// set same value again, should be noop
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db.SetState(address, key1, value1)
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suite.Require().Equal(value1, db.GetState(address, key1))
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}, statedb.Storage{
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key1: value1,
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}},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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keeper := NewMockKeeper()
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db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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tc.malleate(db)
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suite.Require().NoError(db.Commit())
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// check committed states in keeper
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suite.Require().Equal(tc.expStates, keeper.accounts[address].states)
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// check ForEachStorage
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db = statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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collected := CollectContractStorage(db)
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if len(tc.expStates) > 0 {
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suite.Require().Equal(tc.expStates, collected)
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} else {
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suite.Require().Empty(collected)
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}
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})
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}
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}
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func (suite *StateDBTestSuite) TestCode() {
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code := []byte("hello world")
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codeHash := crypto.Keccak256Hash(code)
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testCases := []struct {
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name string
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malleate func(vm.StateDB)
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expCode []byte
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expCodeHash common.Hash
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}{
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{"non-exist account", func(vm.StateDB) {}, nil, common.Hash{}},
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{"empty account", func(db vm.StateDB) {
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db.CreateAccount(address)
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}, nil, common.BytesToHash(emptyCodeHash)},
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{"set code", func(db vm.StateDB) {
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db.SetCode(address, code)
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}, code, codeHash},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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keeper := NewMockKeeper()
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db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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tc.malleate(db)
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// check dirty state
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suite.Require().Equal(tc.expCode, db.GetCode(address))
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suite.Require().Equal(len(tc.expCode), db.GetCodeSize(address))
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suite.Require().Equal(tc.expCodeHash, db.GetCodeHash(address))
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suite.Require().NoError(db.Commit())
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// check again
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db = statedb.New(sdk.Context{}, keeper, emptyTxConfig)
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suite.Require().Equal(tc.expCode, db.GetCode(address))
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suite.Require().Equal(len(tc.expCode), db.GetCodeSize(address))
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suite.Require().Equal(tc.expCodeHash, db.GetCodeHash(address))
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})
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}
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}
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func (suite *StateDBTestSuite) TestRevertSnapshot() {
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v1 := common.BigToHash(big.NewInt(1))
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v2 := common.BigToHash(big.NewInt(2))
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v3 := common.BigToHash(big.NewInt(3))
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testCases := []struct {
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name string
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malleate func(vm.StateDB)
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}{
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{"set state", func(db vm.StateDB) {
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db.SetState(address, v1, v3)
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}},
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{"set nonce", func(db vm.StateDB) {
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db.SetNonce(address, 10)
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}},
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{"change balance", func(db vm.StateDB) {
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db.AddBalance(address, big.NewInt(10))
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db.SubBalance(address, big.NewInt(5))
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}},
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{"override account", func(db vm.StateDB) {
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db.CreateAccount(address)
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}},
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{"set code", func(db vm.StateDB) {
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db.SetCode(address, []byte("hello world"))
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}},
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{"suicide", func(db vm.StateDB) {
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db.SetState(address, v1, v2)
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db.SetCode(address, []byte("hello world"))
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suite.Require().True(db.Suicide(address))
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}},
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{"add log", func(db vm.StateDB) {
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db.AddLog(ðtypes.Log{
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Address: address,
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})
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}},
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{"add refund", func(db vm.StateDB) {
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db.AddRefund(10)
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db.SubRefund(5)
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}},
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{"access list", func(db vm.StateDB) {
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db.AddAddressToAccessList(address)
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db.AddSlotToAccessList(address, v1)
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}},
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}
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for _, tc := range testCases {
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suite.Run(tc.name, func() {
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ctx := sdk.Context{}
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keeper := NewMockKeeper()
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{
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// do some arbitrary changes to the storage
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db := statedb.New(ctx, keeper, emptyTxConfig)
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db.SetNonce(address, 1)
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db.AddBalance(address, big.NewInt(100))
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db.SetCode(address, []byte("hello world"))
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db.SetState(address, v1, v2)
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db.SetNonce(address2, 1)
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suite.Require().NoError(db.Commit())
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}
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originalKeeper := keeper.Clone()
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// run test
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db := statedb.New(ctx, keeper, emptyTxConfig)
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rev := db.Snapshot()
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tc.malleate(db)
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db.RevertToSnapshot(rev)
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// check empty states after revert
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suite.Require().Zero(db.GetRefund())
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suite.Require().Empty(db.Logs())
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suite.Require().NoError(db.Commit())
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// check keeper should stay the same
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suite.Require().Equal(originalKeeper, keeper)
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})
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}
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}
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func (suite *StateDBTestSuite) TestNestedSnapshot() {
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key := common.BigToHash(big.NewInt(1))
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value1 := common.BigToHash(big.NewInt(1))
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value2 := common.BigToHash(big.NewInt(2))
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db := statedb.New(sdk.Context{}, NewMockKeeper(), emptyTxConfig)
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rev1 := db.Snapshot()
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db.SetState(address, key, value1)
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rev2 := db.Snapshot()
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db.SetState(address, key, value2)
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suite.Require().Equal(value2, db.GetState(address, key))
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db.RevertToSnapshot(rev2)
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suite.Require().Equal(value1, db.GetState(address, key))
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db.RevertToSnapshot(rev1)
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suite.Require().Equal(common.Hash{}, db.GetState(address, key))
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}
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func (suite *StateDBTestSuite) TestInvalidSnapshotId() {
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db := statedb.New(sdk.Context{}, NewMockKeeper(), emptyTxConfig)
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suite.Require().Panics(func() {
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db.RevertToSnapshot(1)
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})
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}
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func (suite *StateDBTestSuite) TestAccessList() {
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value1 := common.BigToHash(big.NewInt(1))
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value2 := common.BigToHash(big.NewInt(2))
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testCases := []struct {
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name string
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malleate func(vm.StateDB)
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}{
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{"add address", func(db vm.StateDB) {
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suite.Require().False(db.AddressInAccessList(address))
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db.AddAddressToAccessList(address)
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suite.Require().True(db.AddressInAccessList(address))
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addrPresent, slotPresent := db.SlotInAccessList(address, value1)
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suite.Require().True(addrPresent)
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suite.Require().False(slotPresent)
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// add again, should be no-op
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db.AddAddressToAccessList(address)
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suite.Require().True(db.AddressInAccessList(address))
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}},
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{"add slot", func(db vm.StateDB) {
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addrPresent, slotPresent := db.SlotInAccessList(address, value1)
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suite.Require().False(addrPresent)
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suite.Require().False(slotPresent)
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db.AddSlotToAccessList(address, value1)
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addrPresent, slotPresent = db.SlotInAccessList(address, value1)
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suite.Require().True(addrPresent)
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suite.Require().True(slotPresent)
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// add another slot
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db.AddSlotToAccessList(address, value2)
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addrPresent, slotPresent = db.SlotInAccessList(address, value2)
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suite.Require().True(addrPresent)
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suite.Require().True(slotPresent)
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// add again, should be noop
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db.AddSlotToAccessList(address, value2)
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addrPresent, slotPresent = db.SlotInAccessList(address, value2)
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suite.Require().True(addrPresent)
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suite.Require().True(slotPresent)
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}},
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{"prepare access list", func(db vm.StateDB) {
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al := ethtypes.AccessList{{
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Address: address3,
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StorageKeys: []common.Hash{value1},
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}}
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db.PrepareAccessList(address, &address2, vm.PrecompiledAddressesBerlin, al)
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// check sender and dst
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suite.Require().True(db.AddressInAccessList(address))
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suite.Require().True(db.AddressInAccessList(address2))
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// check precompiles
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suite.Require().True(db.AddressInAccessList(common.BytesToAddress([]byte{1})))
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// check AccessList
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suite.Require().True(db.AddressInAccessList(address3))
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addrPresent, slotPresent := db.SlotInAccessList(address3, value1)
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suite.Require().True(addrPresent)
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suite.Require().True(slotPresent)
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addrPresent, slotPresent = db.SlotInAccessList(address3, value2)
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suite.Require().True(addrPresent)
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suite.Require().False(slotPresent)
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}},
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}
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for _, tc := range testCases {
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db := statedb.New(sdk.Context{}, NewMockKeeper(), emptyTxConfig)
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tc.malleate(db)
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}
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}
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func (suite *StateDBTestSuite) TestLog() {
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txHash := common.BytesToHash([]byte("tx"))
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// use a non-default tx config
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txConfig := statedb.NewTxConfig(
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blockHash,
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txHash,
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1, 1,
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)
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db := statedb.New(sdk.Context{}, NewMockKeeper(), txConfig)
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data := []byte("hello world")
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db.AddLog(ðtypes.Log{
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Address: address,
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Topics: []common.Hash{},
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Data: data,
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BlockNumber: 1,
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})
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suite.Require().Equal(1, len(db.Logs()))
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expecedLog := ðtypes.Log{
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Address: address,
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Topics: []common.Hash{},
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Data: data,
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BlockNumber: 1,
|
|
BlockHash: blockHash,
|
|
TxHash: txHash,
|
|
TxIndex: 1,
|
|
Index: 1,
|
|
}
|
|
suite.Require().Equal(expecedLog, db.Logs()[0])
|
|
|
|
db.AddLog(ðtypes.Log{
|
|
Address: address,
|
|
Topics: []common.Hash{},
|
|
Data: data,
|
|
BlockNumber: 1,
|
|
})
|
|
suite.Require().Equal(2, len(db.Logs()))
|
|
expecedLog.Index++
|
|
suite.Require().Equal(expecedLog, db.Logs()[1])
|
|
}
|
|
|
|
func (suite *StateDBTestSuite) TestRefund() {
|
|
testCases := []struct {
|
|
name string
|
|
malleate func(vm.StateDB)
|
|
expRefund uint64
|
|
expPanic bool
|
|
}{
|
|
{"add refund", func(db vm.StateDB) {
|
|
db.AddRefund(uint64(10))
|
|
}, 10, false},
|
|
{"sub refund", func(db vm.StateDB) {
|
|
db.AddRefund(uint64(10))
|
|
db.SubRefund(uint64(5))
|
|
}, 5, false},
|
|
{"negative refund counter", func(db vm.StateDB) {
|
|
db.AddRefund(uint64(5))
|
|
db.SubRefund(uint64(10))
|
|
}, 0, true},
|
|
}
|
|
for _, tc := range testCases {
|
|
db := statedb.New(sdk.Context{}, NewMockKeeper(), emptyTxConfig)
|
|
if !tc.expPanic {
|
|
tc.malleate(db)
|
|
suite.Require().Equal(tc.expRefund, db.GetRefund())
|
|
} else {
|
|
suite.Require().Panics(func() {
|
|
tc.malleate(db)
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func (suite *StateDBTestSuite) TestIterateStorage() {
|
|
key1 := common.BigToHash(big.NewInt(1))
|
|
value1 := common.BigToHash(big.NewInt(2))
|
|
key2 := common.BigToHash(big.NewInt(3))
|
|
value2 := common.BigToHash(big.NewInt(4))
|
|
|
|
keeper := NewMockKeeper()
|
|
db := statedb.New(sdk.Context{}, keeper, emptyTxConfig)
|
|
db.SetState(address, key1, value1)
|
|
db.SetState(address, key2, value2)
|
|
|
|
// ForEachStorage only iterate committed state
|
|
suite.Require().Empty(CollectContractStorage(db))
|
|
|
|
suite.Require().NoError(db.Commit())
|
|
|
|
storage := CollectContractStorage(db)
|
|
suite.Require().Equal(2, len(storage))
|
|
suite.Require().Equal(keeper.accounts[address].states, storage)
|
|
|
|
// break early iteration
|
|
storage = make(statedb.Storage)
|
|
db.ForEachStorage(address, func(k, v common.Hash) bool {
|
|
storage[k] = v
|
|
// return false to break early
|
|
return false
|
|
})
|
|
suite.Require().Equal(1, len(storage))
|
|
}
|
|
|
|
func CollectContractStorage(db vm.StateDB) statedb.Storage {
|
|
storage := make(statedb.Storage)
|
|
db.ForEachStorage(address, func(k, v common.Hash) bool {
|
|
storage[k] = v
|
|
return true
|
|
})
|
|
return storage
|
|
}
|
|
|
|
func TestStateDBTestSuite(t *testing.T) {
|
|
suite.Run(t, &StateDBTestSuite{})
|
|
}
|