nimbus-eth1/tests/test_state_db.nim

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# Nimbus
# Copyright (c) 2018 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import unittest2, eth/trie/[hexary, db],
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../nimbus/db/state_db, stew/byteutils, eth/common,
stew/ranges
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include ../nimbus/db/accounts_cache
func initAddr(z: int): EthAddress =
result[^1] = z.byte
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proc stateDBMain*() =
suite "Account State DB":
setup:
const emptyAcc = newAccount()
var
memDB = newMemoryDB()
acDB = newMemoryDB()
trie = initHexaryTrie(memDB)
stateDB = newAccountStateDB(memDB, trie.rootHash, true)
address = hexToByteArray[20]("0x0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6")
code = hexToSeqByte("0x0f572e5295c57f15886f9b263e2f6d2d6c7b5ec6")
rootHash: KeccakHash
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test "accountExists and isDeadAccount":
check stateDB.accountExists(address) == false
check stateDB.isDeadAccount(address) == true
var acc = stateDB.getAccount(address)
acc.balance = 1000.u256
stateDB.setAccount(address, acc)
check stateDB.accountExists(address) == true
check stateDB.isDeadAccount(address) == false
acc.balance = 0.u256
acc.nonce = 1
stateDB.setAccount(address, acc)
check stateDB.isDeadAccount(address) == false
stateDB.setCode(address, code)
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stateDB.setNonce(address, 0)
check stateDB.isDeadAccount(address) == false
stateDB.setCode(address, [])
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check stateDB.isDeadAccount(address) == true
check stateDB.accountExists(address) == true
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test "clone storage":
var x = RefAccount(
overlayStorage: initTable[UInt256, UInt256](),
originalStorage: newTable[UInt256, UInt256]()
)
x.overlayStorage[10.u256] = 11.u256
x.overlayStorage[11.u256] = 12.u256
x.originalStorage[10.u256] = 11.u256
x.originalStorage[11.u256] = 12.u256
var y = x.clone(cloneStorage = true)
y.overlayStorage[12.u256] = 13.u256
y.originalStorage[12.u256] = 13.u256
check 12.u256 notin x.overlayStorage
check 12.u256 in y.overlayStorage
check x.overlayStorage.len == 2
check y.overlayStorage.len == 3
check 12.u256 in x.originalStorage
check 12.u256 in y.originalStorage
check x.originalStorage.len == 3
check y.originalStorage.len == 3
test "accounts cache":
var ac = init(AccountsCache, acDB, emptyRlpHash, true)
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var addr1 = initAddr(1)
check ac.isDeadAccount(addr1) == true
check ac.accountExists(addr1) == false
check ac.hasCodeOrNonce(addr1) == false
ac.setBalance(addr1, 1000.u256)
check ac.getBalance(addr1) == 1000.u256
ac.subBalance(addr1, 100.u256)
check ac.getBalance(addr1) == 900.u256
ac.addBalance(addr1, 200.u256)
check ac.getBalance(addr1) == 1100.u256
ac.setNonce(addr1, 1)
check ac.getNonce(addr1) == 1
ac.incNonce(addr1)
check ac.getNonce(addr1) == 2
ac.setCode(addr1, code)
check ac.getCode(addr1) == code
ac.setStorage(addr1, 1.u256, 10.u256)
check ac.getStorage(addr1, 1.u256) == 10.u256
check ac.getCommittedStorage(addr1, 1.u256) == 0.u256
check ac.hasCodeOrNonce(addr1) == true
check ac.getCodeSize(addr1) == code.len
ac.persist()
rootHash = ac.rootHash
var db = newAccountStateDB(memDB, emptyRlpHash, true)
db.setBalance(addr1, 1100.u256)
db.setNonce(addr1, 2)
db.setCode(addr1, code)
db.setStorage(addr1, 1.u256, 10.u256)
check rootHash == db.rootHash
test "accounts cache readonly operations":
# use previous hash
var ac = init(AccountsCache, acDB, rootHash, true)
var addr2 = initAddr(2)
check ac.getCodeHash(addr2) == emptyAcc.codeHash
check ac.getBalance(addr2) == emptyAcc.balance
check ac.getNonce(addr2) == emptyAcc.nonce
check ac.getCode(addr2) == []
check ac.getCodeSize(addr2) == 0
check ac.getCommittedStorage(addr2, 1.u256) == 0.u256
check ac.getStorage(addr2, 1.u256) == 0.u256
check ac.hasCodeOrNonce(addr2) == false
check ac.accountExists(addr2) == false
check ac.isDeadAccount(addr2) == true
ac.persist()
# readonly operations should not modify
# state trie at all
check ac.rootHash == rootHash
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when isMainModule:
stateDBMain()