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package state_test
import (
crand "crypto/rand"
"math/big"
"math/rand"
"testing"
"time"
"github.com/ethereum-optimism/optimism/op-chain-ops/state"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/stretchr/testify/require"
)
func TestAddBalance(t *testing.T) {
t.Parallel()
rng := rand.New(rand.NewSource(time.Now().UnixNano()))
db := state.NewMemoryStateDB(nil)
for i := 0; i < 100; i++ {
key, _ := crypto.GenerateKey()
addr := crypto.PubkeyToAddress(key.PublicKey)
value := new(big.Int).Rand(rng, big.NewInt(1000))
db.CreateAccount(addr)
db.AddBalance(addr, value)
account := db.GetAccount(addr)
require.NotNil(t, account)
require.True(t, BigEqual(account.Balance, value))
}
}
func TestCode(t *testing.T) {
t.Parallel()
db := state.NewMemoryStateDB(nil)
for i := 0; i < 100; i++ {
key, _ := crypto.GenerateKey()
addr := crypto.PubkeyToAddress(key.PublicKey)
db.CreateAccount(addr)
pre := db.GetCode(addr)
require.Nil(t, pre)
code := make([]byte, rand.Intn(1024))
_, err := crand.Read(code)
require.NoError(t, err)
db.SetCode(addr, code)
post := db.GetCode(addr)
if len(code) == 0 {
require.Nil(t, post)
} else {
require.Equal(t, post, code)
}
size := db.GetCodeSize(addr)
require.Equal(t, size, len(code))
codeHash := db.GetCodeHash(addr)
require.Equal(t, codeHash, common.BytesToHash(crypto.Keccak256(code)))
}
}
func BigEqual(a, b *big.Int) bool {
if a == nil || b == nil {
return a == b
} else {
return a.Cmp(b) == 0
}
}