laconicd-deprecated/x/evm/statedb/mock_test.go

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package statedb_test
import (
"errors"
"math/big"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum/common"
"github.com/tharsis/ethermint/x/evm/statedb"
)
var _ statedb.Keeper = &MockKeeper{}
type MockKeeper struct {
errAddress common.Address
accounts map[common.Address]statedb.Account
states map[common.Address]statedb.Storage
codes map[common.Hash][]byte
}
func NewMockKeeper() *MockKeeper {
return &MockKeeper{
errAddress: common.BigToAddress(big.NewInt(1)),
accounts: make(map[common.Address]statedb.Account),
states: make(map[common.Address]statedb.Storage),
codes: make(map[common.Hash][]byte),
}
}
func (k MockKeeper) GetAccount(ctx sdk.Context, addr common.Address) (*statedb.Account, error) {
if addr == k.errAddress {
return nil, errors.New("mock db error")
}
acct, ok := k.accounts[addr]
if !ok {
return nil, nil
}
return &acct, nil
}
func (k MockKeeper) GetState(ctx sdk.Context, addr common.Address, key common.Hash) common.Hash {
return k.states[addr][key]
}
func (k MockKeeper) GetCode(ctx sdk.Context, codeHash common.Hash) []byte {
return k.codes[codeHash]
}
func (k MockKeeper) ForEachStorage(ctx sdk.Context, addr common.Address, cb func(key, value common.Hash) bool) {
for k, v := range k.states[addr] {
if !cb(k, v) {
return
}
}
}
func (k MockKeeper) SetAccount(ctx sdk.Context, addr common.Address, account statedb.Account) error {
k.accounts[addr] = account
return nil
}
func (k MockKeeper) SetState(ctx sdk.Context, addr common.Address, key common.Hash, value []byte) {
if len(value) == 0 {
delete(k.states[addr], key)
} else {
k.states[addr][key] = common.BytesToHash(value)
}
}
func (k MockKeeper) SetCode(ctx sdk.Context, codeHash []byte, code []byte) {
k.codes[common.BytesToHash(codeHash)] = code
}
func (k MockKeeper) DeleteAccount(ctx sdk.Context, addr common.Address) error {
old := k.accounts[addr]
delete(k.accounts, addr)
delete(k.states, addr)
if len(old.CodeHash) > 0 {
delete(k.codes, common.BytesToHash(old.CodeHash))
}
return nil
}