forked from cerc-io/laconicd-deprecated
115 lines
2.7 KiB
Go
115 lines
2.7 KiB
Go
package statedb_test
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import (
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"bytes"
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"errors"
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"math/big"
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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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"github.com/ethereum/go-ethereum/crypto"
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"github.com/tharsis/ethermint/x/evm/statedb"
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)
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var (
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_ statedb.Keeper = &MockKeeper{}
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errAddress common.Address = common.BigToAddress(big.NewInt(100))
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emptyCodeHash = crypto.Keccak256(nil)
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)
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type MockAcount struct {
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account statedb.Account
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states statedb.Storage
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}
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type MockKeeper struct {
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accounts map[common.Address]MockAcount
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codes map[common.Hash][]byte
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}
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func NewMockKeeper() *MockKeeper {
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return &MockKeeper{
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accounts: make(map[common.Address]MockAcount),
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codes: make(map[common.Hash][]byte),
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}
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}
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func (k MockKeeper) GetAccount(ctx sdk.Context, addr common.Address) *statedb.Account {
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acct, ok := k.accounts[addr]
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if !ok {
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return nil
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}
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return &acct.account
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}
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func (k MockKeeper) GetState(ctx sdk.Context, addr common.Address, key common.Hash) common.Hash {
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return k.accounts[addr].states[key]
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}
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func (k MockKeeper) GetCode(ctx sdk.Context, codeHash common.Hash) []byte {
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return k.codes[codeHash]
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}
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func (k MockKeeper) ForEachStorage(ctx sdk.Context, addr common.Address, cb func(key, value common.Hash) bool) {
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if acct, ok := k.accounts[addr]; ok {
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for k, v := range acct.states {
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if !cb(k, v) {
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return
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}
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}
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}
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}
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func (k MockKeeper) SetAccount(ctx sdk.Context, addr common.Address, account statedb.Account) error {
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if addr == errAddress {
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return errors.New("mock db error")
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}
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acct, exists := k.accounts[addr]
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if exists {
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// update
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acct.account = account
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k.accounts[addr] = acct
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} else {
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k.accounts[addr] = MockAcount{account: account, states: make(statedb.Storage)}
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}
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return nil
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}
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func (k MockKeeper) SetState(ctx sdk.Context, addr common.Address, key common.Hash, value []byte) {
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if acct, ok := k.accounts[addr]; ok {
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if len(value) == 0 {
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delete(acct.states, key)
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} else {
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acct.states[key] = common.BytesToHash(value)
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}
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}
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}
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func (k MockKeeper) SetCode(ctx sdk.Context, codeHash []byte, code []byte) {
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k.codes[common.BytesToHash(codeHash)] = code
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}
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func (k MockKeeper) DeleteAccount(ctx sdk.Context, addr common.Address) error {
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if addr == errAddress {
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return errors.New("mock db error")
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}
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old := k.accounts[addr]
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delete(k.accounts, addr)
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if !bytes.Equal(old.account.CodeHash, emptyCodeHash) {
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delete(k.codes, common.BytesToHash(old.account.CodeHash))
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}
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return nil
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}
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func (k MockKeeper) Clone() *MockKeeper {
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accounts := make(map[common.Address]MockAcount, len(k.accounts))
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for k, v := range k.accounts {
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accounts[k] = v
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}
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codes := make(map[common.Hash][]byte, len(k.codes))
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for k, v := range k.codes {
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codes[k] = v
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}
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return &MockKeeper{accounts, codes}
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}
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