nimbus-eth1/tests/test_blockchain_json.nim

758 lines
26 KiB
Nim

# 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.
import
unittest2, json, os, tables, strutils, sets, strformat, times,
options,
eth/[common, rlp], eth/trie/[db, trie_defs],
ethash, stew/endians2, nimcrypto,
./test_helpers, ./test_allowed_to_fail,
../premix/parser, test_config,
../nimbus/[vm_state, utils, vm_types, errors, transaction, constants, vm_types2],
../nimbus/db/[db_chain, accounts_cache],
../nimbus/utils/header,
../nimbus/p2p/[executor, dao],
../nimbus/[config, chain_config],
../stateless/[tree_from_witness, witness_types]
type
SealEngine = enum
NoProof
Ethash
TestBlock = object
goodBlock: bool
blockRLP : Blob
hasException: bool
Tester = object
lastBlockHash: Hash256
genesisHeader: BlockHeader
blocks : seq[TestBlock]
sealEngine : Option[SealEngine]
debugMode : bool
trace : bool
vmState : BaseVMState
debugData : JsonNode
network : string
MiningHeader = object
parentHash : Hash256
ommersHash : Hash256
coinbase : EthAddress
stateRoot : Hash256
txRoot : Hash256
receiptRoot : Hash256
bloom : common.BloomFilter
difficulty : DifficultyInt
blockNumber : BlockNumber
gasLimit : GasInt
gasUsed : GasInt
timestamp : EthTime
extraData : Blob
proc testFixture(node: JsonNode, testStatusIMPL: var TestStatus, debugMode = false, trace = false)
func normalizeNumber(n: JsonNode): JsonNode =
let str = n.getStr
if str == "0x":
result = newJString("0x0")
elif str == "0x0":
result = n
elif str == "0x00":
result = newJString("0x0")
elif str[2] == '0':
var i = 2
while str[i] == '0':
inc i
result = newJString("0x" & str.substr(i))
else:
result = n
func normalizeData(n: JsonNode): JsonNode =
if n.getStr() == "":
result = newJString("0x")
else:
result = n
func normalizeBlockHeader(node: JsonNode): JsonNode =
for k, v in node:
case k
of "bloom": node["logsBloom"] = v
of "coinbase": node["miner"] = v
of "uncleHash": node["sha3Uncles"] = v
of "receiptTrie": node["receiptsRoot"] = v
of "transactionsTrie": node["transactionsRoot"] = v
of "number", "difficulty", "gasUsed",
"gasLimit", "timestamp":
node[k] = normalizeNumber(v)
of "extraData":
node[k] = normalizeData(v)
else: discard
result = node
proc parseHeader(blockHeader: JsonNode, testStatusIMPL: var TestStatus): BlockHeader =
result = normalizeBlockHeader(blockHeader).parseBlockHeader
var blockHash: Hash256
blockHeader.fromJson "hash", blockHash
check blockHash == hash(result)
proc parseBlocks(blocks: JsonNode): seq[TestBlock] =
for fixture in blocks:
var t: TestBlock
for key, value in fixture:
case key
of "blockHeader":
# header is absent in bad block
t.goodBlock = true
of "rlp":
fixture.fromJson "rlp", t.blockRLP
of "transactions", "uncleHeaders",
"blocknumber", "chainname", "chainnetwork":
discard
else:
t.hasException = true
result.add t
func vmConfiguration(network: string, c: var ChainConfig) =
const
H = high(BlockNumber)
Zero = 0.toBlockNumber
Five = 5.toBlockNumber
proc assignNumber(c: var ChainConfig,
fork: Fork, n: BlockNumber) =
var number: array[Fork, BlockNumber]
var z = low(Fork)
while z < fork:
number[z] = Zero
z = z.succ
number[fork] = n
z = high(Fork)
while z > fork:
number[z] = H
z = z.pred
c.daoForkSupport = false
c.homesteadBlock = number[FkHomestead]
c.daoForkBlock = number[FkHomestead]
c.eip150Block = number[FkTangerine]
c.eip155Block = number[FkSpurious]
c.eip158Block = number[FkSpurious]
c.byzantiumBlock = number[FkByzantium]
c.constantinopleBlock = number[FkConstantinople]
c.petersburgBlock = number[FkPetersburg]
c.istanbulBlock = number[FkIstanbul]
c.muirGlacierBlock = number[FkBerlin]
c.berlinBlock = number[FkBerlin]
case network
of "EIP150":
c.assignNumber(FkTangerine, Zero)
of "ConstantinopleFix":
c.assignNumber(FkPetersburg, Zero)
of "Homestead":
c.assignNumber(FkHomestead, Zero)
of "Frontier":
c.assignNumber(FkFrontier, Zero)
of "Byzantium":
c.assignNumber(FkByzantium, Zero)
of "EIP158ToByzantiumAt5":
c.assignNumber(FkByzantium, Five)
of "EIP158":
c.assignNumber(FkSpurious, Zero)
of "HomesteadToDaoAt5":
c.assignNumber(FkHomestead, Zero)
c.daoForkBlock = Five
c.daoForkSupport = true
of "Constantinople":
c.assignNumber(FkConstantinople, Zero)
of "HomesteadToEIP150At5":
c.assignNumber(FkTangerine, Five)
of "FrontierToHomesteadAt5":
c.assignNumber(FkHomestead, Five)
of "ByzantiumToConstantinopleFixAt5":
c.assignNumber(FkPetersburg, Five)
c.constantinopleBlock = Five
of "Istanbul":
c.assignNumber(FkIstanbul, Zero)
of "Berlin":
c.assignNumber(FkBerlin, Zero)
else:
raise newException(ValueError, "unsupported network " & network)
proc parseTester(fixture: JsonNode, testStatusIMPL: var TestStatus): Tester =
result.blocks = parseBlocks(fixture["blocks"])
fixture.fromJson "lastblockhash", result.lastBlockHash
result.genesisHeader = parseHeader(fixture["genesisBlockHeader"], testStatusIMPL)
if "genesisRLP" in fixture:
var genesisRLP: Blob
fixture.fromJson "genesisRLP", genesisRLP
let genesisBlock = EthBlock(header: result.genesisHeader)
check genesisRLP == rlp.encode(genesisBlock)
else:
var goodBlock = true
for h in result.blocks:
goodBlock = goodBlock and h.goodBlock
check goodBlock == false
if "sealEngine" in fixture:
result.sealEngine = some(parseEnum[SealEngine](fixture["sealEngine"].getStr))
result.network = fixture["network"].getStr
proc blockWitness(vmState: BaseVMState, chainDB: BaseChainDB) =
let rootHash = vmState.accountDb.rootHash
let witness = vmState.buildWitness()
let fork = vmState.fork
let flags = if fork >= FKSpurious: {wfEIP170} else: {}
# build tree from witness
var db = newMemoryDB()
when defined(useInputStream):
var input = memoryInput(witness)
var tb = initTreeBuilder(input, db, flags)
else:
var tb = initTreeBuilder(witness, db, flags)
let root = tb.buildTree()
# compare the result
if root != rootHash:
raise newException(ValidationError, "Invalid trie generated from block witness")
func validateBlockUnchanged(a, b: EthBlock): bool =
result = rlp.encode(a) == rlp.encode(b)
type Hash512 = MDigest[512]
var cacheByEpoch = initOrderedTable[uint64, seq[Hash512]]()
const CACHE_MAX_ITEMS = 10
proc mkCacheBytes(blockNumber: uint64): seq[Hash512] =
mkcache(getCacheSize(blockNumber), getSeedhash(blockNumber))
proc getCache(blockNumber: uint64): seq[Hash512] =
# TODO: this is very inefficient
let epochIndex = blockNumber div EPOCH_LENGTH
# Get the cache if already generated, marking it as recently used
if epochIndex in cacheByEpoch:
let c = cacheByEpoch[epochIndex]
cacheByEpoch.del(epochIndex) # pop and append at end
cacheByEpoch[epochIndex] = c
return c
# Generate the cache if it was not already in memory
# Simulate requesting mkcache by block number: multiply index by epoch length
let c = mkCacheBytes(epochIndex * EPOCH_LENGTH)
cacheByEpoch[epochIndex] = c
# Limit memory usage for cache
if cacheByEpoch.len > CACHE_MAX_ITEMS:
cacheByEpoch.del(epochIndex)
shallowCopy(result, c)
func cacheHash(x: openArray[Hash512]): Hash256 =
var ctx: keccak256
ctx.init()
for a in x:
ctx.update(a.data[0].unsafeAddr, uint(a.data.len))
ctx.finish result.data
ctx.clear()
proc checkPOW(blockNumber: Uint256, miningHash, mixHash: Hash256, nonce: BlockNonce, difficulty: DifficultyInt) =
let blockNumber = blockNumber.truncate(uint64)
let cache = blockNumber.getCache()
let size = getDataSize(blockNumber)
let miningOutput = hashimotoLight(size, cache, miningHash, uint64.fromBytesBE(nonce))
if miningOutput.mixDigest != mixHash:
echo "actual: ", miningOutput.mixDigest
echo "expected: ", mixHash
echo "blockNumber: ", blockNumber
echo "miningHash: ", miningHash
echo "nonce: ", nonce.toHex
echo "difficulty: ", difficulty
echo "size: ", size
echo "cache hash: ", cacheHash(cache)
raise newException(ValidationError, "mixHash mismatch")
let value = Uint256.fromBytesBE(miningOutput.value.data)
if value > Uint256.high div difficulty:
raise newException(ValidationError, "mining difficulty error")
func toMiningHeader(header: BlockHeader): MiningHeader =
result.parentHash = header.parentHash
result.ommersHash = header.ommersHash
result.coinbase = header.coinbase
result.stateRoot = header.stateRoot
result.txRoot = header.txRoot
result.receiptRoot = header.receiptRoot
result.bloom = header.bloom
result.difficulty = header.difficulty
result.blockNumber = header.blockNumber
result.gasLimit = header.gasLimit
result.gasUsed = header.gasUsed
result.timestamp = header.timestamp
result.extraData = header.extraData
func hash(header: MiningHeader): Hash256 =
keccakHash(rlp.encode(header))
proc validateSeal(header: BlockHeader) =
let miningHeader = header.toMiningHeader
let miningHash = miningHeader.hash
checkPOW(header.blockNumber, miningHash,
header.mixDigest, header.nonce, header.difficulty)
func validateGasLimit(gasLimit, parentGasLimit: GasInt) =
if gasLimit < GAS_LIMIT_MINIMUM:
raise newException(ValidationError, "Gas limit is below minimum")
if gasLimit > GAS_LIMIT_MAXIMUM:
raise newException(ValidationError, "Gas limit is above maximum")
let diff = gasLimit - parentGasLimit
if diff > (parentGasLimit div GAS_LIMIT_ADJUSTMENT_FACTOR):
raise newException(ValidationError, "Gas limit difference to parent is too big")
proc validateHeader(header, parentHeader: BlockHeader, checkSeal: bool) =
if header.extraData.len > 32:
raise newException(ValidationError, "BlockHeader.extraData larger than 32 bytes")
validateGasLimit(header.gasLimit, parentHeader.gasLimit)
if header.blockNumber != parentHeader.blockNumber + 1:
raise newException(ValidationError, "Blocks must be numbered consecutively.")
if header.timestamp.toUnix <= parentHeader.timestamp.toUnix:
raise newException(ValidationError, "timestamp must be strictly later than parent")
if checkSeal:
validateSeal(header)
func validateUncle(currBlock, uncle, uncleParent: BlockHeader) =
if uncle.blockNumber >= currBlock.blockNumber:
raise newException(ValidationError, "uncle block number larger than current block number")
if uncle.blockNumber != uncleParent.blockNumber + 1:
raise newException(ValidationError, "Uncle number is not one above ancestor's number")
if uncle.timestamp.toUnix < uncleParent.timestamp.toUnix:
raise newException(ValidationError, "Uncle timestamp is before ancestor's timestamp")
if uncle.gasUsed > uncle.gasLimit:
raise newException(ValidationError, "Uncle's gas usage is above the limit")
proc validateGasLimit(chainDB: BaseChainDB, header: BlockHeader) =
let parentHeader = chainDB.getBlockHeader(header.parentHash)
let (lowBound, highBound) = gasLimitBounds(parentHeader)
if header.gasLimit < lowBound:
raise newException(ValidationError, "The gas limit is too low")
elif header.gasLimit > highBound:
raise newException(ValidationError, "The gas limit is too high")
proc validateUncles(chainDB: BaseChainDB, currBlock: EthBlock, checkSeal: bool) =
let hasUncles = currBlock.uncles.len > 0
let shouldHaveUncles = currBlock.header.ommersHash != EMPTY_UNCLE_HASH
if not hasUncles and not shouldHaveUncles:
# optimization to avoid loading ancestors from DB, since the block has no uncles
return
elif hasUncles and not shouldHaveUncles:
raise newException(ValidationError, "Block has uncles but header suggests uncles should be empty")
elif shouldHaveUncles and not hasUncles:
raise newException(ValidationError, "Header suggests block should have uncles but block has none")
# Check for duplicates
var uncleSet = initHashSet[Hash256]()
for uncle in currBlock.uncles:
let uncleHash = uncle.hash
if uncleHash in uncleSet:
raise newException(ValidationError, "Block contains duplicate uncles")
else:
uncleSet.incl uncleHash
let recentAncestorHashes = chainDB.getAncestorsHashes(MAX_UNCLE_DEPTH + 1, currBlock.header)
let recentUncleHashes = chainDB.getUncleHashes(recentAncestorHashes)
let blockHash =currBlock.header.hash
for uncle in currBlock.uncles:
let uncleHash = uncle.hash
if uncleHash == blockHash:
raise newException(ValidationError, "Uncle has same hash as block")
# ensure the uncle has not already been included.
if uncleHash in recentUncleHashes:
raise newException(ValidationError, "Duplicate uncle")
# ensure that the uncle is not one of the canonical chain blocks.
if uncleHash in recentAncestorHashes:
raise newException(ValidationError, "Uncle cannot be an ancestor")
# ensure that the uncle was built off of one of the canonical chain
# blocks.
if (uncle.parentHash notin recentAncestorHashes) or
(uncle.parentHash == currBlock.header.parentHash):
raise newException(ValidationError, "Uncle's parent is not an ancestor")
# Now perform VM level validation of the uncle
if checkSeal:
validateSeal(uncle)
let uncleParent = chainDB.getBlockHeader(uncle.parentHash)
validateUncle(currBlock.header, uncle, uncleParent)
func isGenesis(currBlock: EthBlock): bool =
result = currBlock.header.blockNumber == 0.u256 and currBlock.header.parentHash == GENESIS_PARENT_HASH
proc validateBlock(chainDB: BaseChainDB, currBlock: EthBlock, checkSeal: bool): bool =
if currBlock.isGenesis:
if currBlock.header.extraData.len > 32:
raise newException(ValidationError, "BlockHeader.extraData larger than 32 bytes")
return true
let parentHeader = chainDB.getBlockHeader(currBlock.header.parentHash)
validateHeader(currBlock.header, parentHeader, checkSeal)
if currBlock.uncles.len > MAX_UNCLES:
raise newException(ValidationError, "Number of uncles exceed limit.")
if not chainDB.exists(currBlock.header.stateRoot):
raise newException(ValidationError, "`state_root` was not found in the db.")
validateUncles(chainDB, currBlock, checkSeal)
validateGaslimit(chainDB, currBlock.header)
result = true
proc importBlock(tester: var Tester, chainDB: BaseChainDB,
preminedBlock: EthBlock, tb: TestBlock, checkSeal, validation: bool): EthBlock =
let parentHeader = chainDB.getBlockHeader(preminedBlock.header.parentHash)
let baseHeaderForImport = generateHeaderFromParentHeader(chainDB.config,
parentHeader,
preminedBlock.header.coinbase,
some(preminedBlock.header.timestamp),
some(preminedBlock.header.gasLimit),
@[]
)
deepCopy(result, preminedBlock)
let tracerFlags: set[TracerFlags] = if tester.trace: {TracerFlags.EnableTracing} else : {}
tester.vmState = newBaseVMState(parentHeader.stateRoot, baseHeaderForImport, chainDB, tracerFlags)
let body = BlockBody(
transactions: result.txs,
uncles: result.uncles
)
let res = processBlock(chainDB, result.header, body, tester.vmState)
if res == ValidationResult.Error:
if not (tb.hasException or (not tb.goodBlock)):
raise newException(ValidationError, "process block validation")
else:
if tester.vmState.generateWitness():
blockWitness(tester.vmState, chainDB)
result.header.stateRoot = tester.vmState.blockHeader.stateRoot
result.header.parentHash = parentHeader.hash
result.header.difficulty = baseHeaderForImport.difficulty
if validation:
if not validateBlockUnchanged(result, preminedBlock):
raise newException(ValidationError, "block changed")
if not validateBlock(chainDB, result, checkSeal):
raise newException(ValidationError, "invalid block")
discard chainDB.persistHeaderToDb(preminedBlock.header)
proc applyFixtureBlockToChain(tester: var Tester, tb: TestBlock,
chainDB: BaseChainDB, checkSeal, validation: bool): (EthBlock, EthBlock, Blob) =
# we hack the ChainConfig here and let it works with calcDifficulty
vmConfiguration(tester.network, chainDB.config)
var
preminedBlock = rlp.decode(tb.blockRLP, EthBlock)
minedBlock = tester.importBlock(chainDB, preminedBlock, tb, checkSeal, validation)
rlpEncodedMinedBlock = rlp.encode(minedBlock)
result = (preminedBlock, minedBlock, rlpEncodedMinedBlock)
func shouldCheckSeal(tester: Tester): bool =
if tester.sealEngine.isSome:
result = tester.sealEngine.get() != NoProof
proc collectDebugData(tester: var Tester) =
if tester.vmState.isNil:
return
let vmState = tester.vmState
let tracingResult = if tester.trace: vmState.getTracingResult() else: %[]
tester.debugData.add %{
"blockNumber": %($vmState.blockNumber),
"structLogs": tracingResult,
}
proc runTester(tester: var Tester, chainDB: BaseChainDB, testStatusIMPL: var TestStatus) =
discard chainDB.persistHeaderToDb(tester.genesisHeader)
check chainDB.getCanonicalHead().blockHash == tester.genesisHeader.blockHash
let checkSeal = tester.shouldCheckSeal
if tester.debugMode:
tester.debugData = newJArray()
for idx, testBlock in tester.blocks:
if testBlock.goodBlock:
try:
let (preminedBlock, _, _) = tester.applyFixtureBlockToChain(
testBlock, chainDB, checkSeal, validation = false) # we manually validate below
check validateBlock(chainDB, preminedBlock, checkSeal) == true
except:
debugEcho "FATAL ERROR(WE HAVE BUG): ", getCurrentExceptionMsg()
else:
var noError = true
try:
let (_, _, _) = tester.applyFixtureBlockToChain(testBlock,
chainDB, checkSeal, validation = true)
except ValueError, ValidationError, BlockNotFound, RlpError:
# failure is expected on this bad block
check (testBlock.hasException or (not testBlock.goodBlock))
noError = false
if tester.debugMode:
tester.debugData.add %{
"exception": %($getCurrentException().name),
"msg": %getCurrentExceptionMsg()
}
# Block should have caused a validation error
check noError == false
if tester.debugMode:
tester.collectDebugData()
proc dumpAccount(accountDb: ReadOnlyStateDB, address: EthAddress, name: string): JsonNode =
result = %{
"name": %name,
"address": %($address),
"nonce": %toHex(accountDb.getNonce(address)),
"balance": %accountDb.getBalance(address).toHex(),
"codehash": %($accountDb.getCodeHash(address)),
"storageRoot": %($accountDb.getStorageRoot(address))
}
proc dumpDebugData(tester: Tester, vmState: BaseVMState, accountList: JsonNode): JsonNode =
var accounts = newJObject()
var i = 0
for ac, _ in accountList:
let account = ethAddressFromHex(ac)
accounts[$account] = dumpAccount(vmState.readOnlyStateDB, account, "acc" & $i)
inc i
%{
"debugData": tester.debugData,
"accounts": accounts
}
proc dumpDebugData(tester: Tester, fixture: JsonNode, fixtureName: string, fixtureIndex: int, success: bool) =
let accountList = if fixture["postState"].kind == JObject: fixture["postState"] else: fixture["pre"]
let vmState = tester.vmState
let debugData = if vmState.isNil:
%{"debugData": tester.debugData}
else:
dumpDebugData(tester, vmState, accountList)
let status = if success: "_success" else: "_failed"
writeFile("debug_" & fixtureName & "_" & $fixtureIndex & status & ".json", debugData.pretty())
proc testFixture(node: JsonNode, testStatusIMPL: var TestStatus, debugMode = false, trace = false) =
# 1 - mine the genesis block
# 2 - loop over blocks:
# - apply transactions
# - mine block
# 3 - diff resulting state with expected state
# 4 - check that all previous blocks were valid
let specifyIndex = test_config.getConfiguration().index
var fixtureIndex = 0
var fixtureTested = false
for fixtureName, fixture in node:
inc fixtureIndex
if specifyIndex > 0 and fixtureIndex != specifyIndex:
continue
var tester = parseTester(fixture, testStatusIMPL)
var chainDB = newBaseChainDB(newMemoryDb(), pruneTrie = test_config.getConfiguration().pruning)
var vmState = newBaseVMState(emptyRlpHash,
tester.genesisHeader, chainDB)
vmState.generateWitness = true
vmState.mutateStateDB:
setupStateDB(fixture["pre"], db)
db.persist()
let obtainedHash = $(vmState.readOnlyStateDB.rootHash)
check obtainedHash == $(tester.genesisHeader.stateRoot)
tester.debugMode = debugMode
tester.trace = trace
var success = true
try:
tester.runTester(chainDB, testStatusIMPL)
let latestBlockHash = chainDB.getCanonicalHead().blockHash
if latestBlockHash != tester.lastBlockHash:
verifyStateDB(fixture["postState"], tester.vmState.readOnlyStateDB)
except ValidationError as E:
echo fixtureName, " ERROR: ", E.msg
success = false
if tester.debugMode:
tester.dumpDebugData(fixture, fixtureName, fixtureIndex, success)
fixtureTested = true
check success == true
if not fixtureTested:
echo test_config.getConfiguration().testSubject, " not tested at all, wrong index?"
if specifyIndex <= 0 or specifyIndex > node.len:
echo "Maximum subtest available: ", node.len
proc blockchainJsonMain*(debugMode = false) =
const
legacyFolder = "eth_tests" / "LegacyTests" / "Constantinople" / "BlockchainTests"
newFolder = "eth_tests" / "BlockchainTests"
let config = test_config.getConfiguration()
if config.testSubject == "" or not debugMode:
# run all test fixtures
if config.legacy:
suite "block chain json tests":
jsonTest(legacyFolder, "BlockchainTests", testFixture, skipBCTests)
else:
suite "new block chain json tests":
jsonTest(newFolder, "newBlockchainTests", testFixture, skipNewBCTests)
else:
# execute single test in debug mode
if config.testSubject.len == 0:
echo "missing test subject"
quit(QuitFailure)
let folder = if config.legacy: legacyFolder else: newFolder
let path = "tests" / "fixtures" / folder
let n = json.parseFile(path / config.testSubject)
var testStatusIMPL: TestStatus
testFixture(n, testStatusIMPL, debugMode = true, config.trace)
when isMainModule:
var message: string
## Processing command line arguments
if test_config.processArguments(message) != test_config.Success:
echo message
quit(QuitFailure)
else:
if len(message) > 0:
echo message
quit(QuitSuccess)
disableParamFiltering()
blockchainJsonMain(true)
# lastBlockHash -> every fixture has it, hash of a block header
# genesisRLP -> NOT every fixture has it, rlp bytes of genesis block header
# _info -> every fixture has it, can be omitted
# pre, postState -> every fixture has it, prestate and post state
# genesisHeader -> every fixture has it
# network -> every fixture has it
# # EIP150 247
# # ConstantinopleFix 286
# # Homestead 256
# # Frontier 396
# # Byzantium 263
# # EIP158ToByzantiumAt5 1
# # EIP158 233
# # HomesteadToDaoAt5 4
# # Constantinople 285
# # HomesteadToEIP150At5 1
# # FrontierToHomesteadAt5 7
# # ByzantiumToConstantinopleFixAt5 1
# sealEngine -> NOT every fixture has it
# # NoProof 1709
# # Ethash 112
# blocks -> every fixture has it, an array of blocks ranging from 1 block to 303 blocks
# # transactions 6230 can be empty
# # # to 6089 -> "" if contractCreation
# # # value 6089
# # # gasLimit 6089 -> "gas"
# # # s 6089
# # # r 6089
# # # gasPrice 6089
# # # v 6089
# # # data 6089 -> "input"
# # # nonce 6089
# # blockHeader 6230 can be not present, e.g. bad rlp
# # uncleHeaders 6230 can be empty
# # rlp 6810 has rlp but no blockheader, usually has exception
# # blocknumber 2733
# # chainname 1821 -> 'A' to 'H', and 'AA' to 'DD'
# # chainnetwork 21 -> all values are "Frontier"
# # expectExceptionALL 420
# # # UncleInChain 55
# # # InvalidTimestamp 42
# # # InvalidGasLimit 42
# # # InvalidNumber 42
# # # InvalidDifficulty 35
# # # InvalidBlockNonce 28
# # # InvalidUncleParentHash 26
# # # ExtraDataTooBig 21
# # # InvalidStateRoot 21
# # # ExtraDataIncorrect 19
# # # UnknownParent 16
# # # TooMuchGasUsed 14
# # # InvalidReceiptsStateRoot 9
# # # InvalidUnclesHash 7
# # # UncleIsBrother 7
# # # UncleTooOld 7
# # # InvalidTransactionsRoot 7
# # # InvalidGasUsed 7
# # # InvalidLogBloom 7
# # # TooManyUncles 7
# # # OutOfGasIntrinsic 1
# # expectExceptionEIP150 17
# # # TooMuchGasUsed 7
# # # InvalidReceiptsStateRoot 7
# # # InvalidStateRoot 3
# # expectExceptionByzantium 17
# # # InvalidStateRoot 10
# # # TooMuchGasUsed 7
# # expectExceptionHomestead 17
# # # InvalidReceiptsStateRoot 7
# # # BlockGasLimitReached 7
# # # InvalidStateRoot 3
# # expectExceptionConstantinople 14
# # # InvalidStateRoot 7
# # # TooMuchGasUsed 7
# # expectExceptionEIP158 14
# # # TooMuchGasUsed 7
# # # InvalidReceiptsStateRoot 7
# # expectExceptionFrontier 14
# # # InvalidReceiptsStateRoot 7
# # # BlockGasLimitReached 7
# # expectExceptionConstantinopleFix 14
# # # InvalidStateRoot 7
# # # TooMuchGasUsed 7