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nimbus-eth1
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nimbus-eth1/tests/test_skeleton.nim

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import
unittest2,
chronicles,
stew/[results, byteutils],
eth/[common, trie/db],
../nimbus/sync/skeleton,
../nimbus/db/db_chain,
../nimbus/p2p/chain,
../nimbus/[chain_config, config, genesis, constants],
./test_helpers,
./test_txpool/helpers
const
baseDir = [".", "tests"]
repoDir = [".", "customgenesis"]
genesisFile = "post-merge.json"
type
Subchain = object
head: int
tail: int
TestEnv = object
conf : NimbusConf
chainDB : BaseChainDB
chain : Chain
CCModify = proc(cc: NetworkParams)
# TODO: too bad that blockHash
# cannot be executed at compile time
let
block49 = BlockHeader(
blockNumber: 49.toBlockNumber
)
block49B = BlockHeader(
blockNumber: 49.toBlockNumber,
extraData: @['B'.byte]
)
block50 = BlockHeader(
blockNumber: 50.toBlockNumber,
parentHash: block49.blockHash
)
block51 = BlockHeader(
blockNumber: 51.toBlockNumber,
parentHash: block50.blockHash
)
proc initEnv(ccm: CCModify = nil): TestEnv =
let
conf = makeConfig(@[
"--custom-network:" & genesisFile.findFilePath(baseDir,repoDir).value
])
if ccm.isNil.not:
ccm(conf.networkParams)
let
chainDB = newBaseChainDB(
newMemoryDb(),
conf.pruneMode == PruneMode.Full,
conf.networkId,
conf.networkParams
)
chain = newChain(chainDB)
initializeEmptyDb(chainDB)
result = TestEnv(
conf: conf,
chainDB: chainDB,
chain: chain
)
proc `subchains=`(sk: SkeletonRef, subchains: openArray[Subchain]) =
var sc = newSeqOfCap[SkeletonSubchain](subchains.len)
for i in 0..<subchains.len:
let x = subchains[i]
sc.add(SkeletonSubchain(
head: x.head.toBlockNumber,
tail: x.tail.toBlockNumber
))
sk.subchains = sc
suite "syncInit":
# Tests various sync initializations based on previous leftovers in the database
# and announced heads.
type
TestCase = object
blocks : seq[BlockHeader] # Database content (besides the genesis)
oldState: seq[Subchain] # Old sync state with various interrupted subchains
head : BlockHeader # New head header to announce to reorg to
newState: seq[Subchain] # Expected sync state after the reorg
let testCases = [
# Completely empty database with only the genesis set. The sync is expected
# to create a single subchain with the requested head.
TestCase(
head: block50,
newState: @[SubChain(head: 50, tail: 50)]
),
# Empty database with only the genesis set with a leftover empty sync
# progress. This is a synthetic case, just for the sake of covering things.
TestCase(
head: block50,
newState: @[SubChain(head: 50, tail: 50)]
),
# A single leftover subchain is present, older than the new head. The
# old subchain should be left as is and a new one appended to the sync
# status.
TestCase(
oldState: @[SubChain(head: 10, tail: 5)],
head: block50,
newState: @[
SubChain(head: 50, tail: 50),
SubChain(head: 10, tail: 5)
]
),
# Multiple leftover subchains are present, older than the new head. The
# old subchains should be left as is and a new one appended to the sync
# status.
TestCase(
oldState: @[
SubChain(head: 20, tail: 15),
SubChain(head: 10, tail: 5)
],
head: block50,
newState: @[
SubChain(head: 50, tail: 50),
SubChain(head: 20, tail: 15),
SubChain(head: 10, tail: 5)
]
),
# A single leftover subchain is present, newer than the new head. The
# newer subchain should be deleted and a fresh one created for the head.
TestCase(
oldState: @[SubChain(head: 65, tail: 60)],
head: block50,
newState: @[SubChain(head: 50, tail: 50)]
),
# Multiple leftover subchain is present, newer than the new head. The
# newer subchains should be deleted and a fresh one created for the head.
TestCase(
oldState: @[
SubChain(head: 75, tail: 70),
SubChain(head: 65, tail: 60)
],
head: block50,
newState: @[SubChain(head: 50, tail: 50)]
),
# Two leftover subchains are present, one fully older and one fully
# newer than the announced head. The head should delete the newer one,
# keeping the older one.
TestCase(
oldState: @[
SubChain(head: 65, tail: 60),
SubChain(head: 10, tail: 5),
],
head: block50,
newState: @[
SubChain(head: 50, tail: 50),
SubChain(head: 10, tail: 5),
],
),
# Multiple leftover subchains are present, some fully older and some
# fully newer than the announced head. The head should delete the newer
# ones, keeping the older ones.
TestCase(
oldState: @[
SubChain(head: 75, tail: 70),
SubChain(head: 65, tail: 60),
SubChain(head: 20, tail: 15),
SubChain(head: 10, tail: 5),
],
head: block50,
newState: @[
SubChain(head: 50, tail: 50),
SubChain(head: 20, tail: 15),
SubChain(head: 10, tail: 5),
],
),
# A single leftover subchain is present and the new head is extending
# it with one more header. We expect the subchain head to be pushed
# forward.
TestCase(
blocks: @[block49],
oldState: @[SubChain(head: 49, tail: 5)],
head: block50,
newState: @[SubChain(head: 50, tail: 5)]
),
# A single leftover subchain is present. A new head is announced that
# links into the middle of it, correctly anchoring into an existing
# header. We expect the old subchain to be truncated and extended with
# the new head.
TestCase(
blocks: @[block49],
oldState: @[SubChain(head: 100, tail: 5)],
head: block50,
newState: @[SubChain(head: 50, tail: 5)]
),
# A single leftover subchain is present. A new head is announced that
# links into the middle of it, but does not anchor into an existing
# header. We expect the old subchain to be truncated and a new chain
# be created for the dangling head.
TestCase(
blocks: @[block49B],
oldState: @[SubChain(head: 100, tail: 5)],
head: block50,
newState: @[
SubChain(head: 50, tail: 50),
SubChain(head: 49, tail: 5),
]
)
]
for z, testCase in testCases:
test "test case #" & $z:
let env = initEnv()
let skeleton = SkeletonRef.new(env.chain)
skeleton.open()
for header in testCase.blocks:
skeleton.putHeader(header)
if testCase.oldState.len > 0:
skeleton.subchains = testCase.oldState
skeleton.initSync(testCase.head)
check skeleton.len == testCase.newState.len
for i, sc in skeleton:
check sc.head == testCase.newState[i].head.toBlockNumber
check sc.tail == testCase.newState[i].tail.toBlockNumber
suite "sync extend":
type
TestCase = object
head : BlockHeader # New head header to announce to reorg to
extend : BlockHeader # New head header to announce to extend with
newState: seq[Subchain] # Expected sync state after the reorg
err : string # Whether extension succeeds or not
let testCases = [
# Initialize a sync and try to extend it with a subsequent block.
TestCase(
head: block49,
extend: block50,
newState: @[Subchain(head: 50, tail: 49)],
),
# Initialize a sync and try to extend it with the existing head block.
TestCase(
head: block49,
extend: block49,
newState: @[Subchain(head: 49, tail: 49)],
),
# Initialize a sync and try to extend it with a sibling block.
TestCase(
head: block49,
extend: block49B,
newState: @[Subchain(head: 49, tail: 49)],
err: "ErrReorgDenied",
),
# Initialize a sync and try to extend it with a number-wise sequential
# header, but a hash wise non-linking one.
TestCase(
head: block49B,
extend: block50,
newState: @[Subchain(head: 49, tail: 49)],
err: "ErrReorgDenied",
),
# Initialize a sync and try to extend it with a non-linking future block.
TestCase(
head: block49,
extend: block51,
newState: @[Subchain(head: 49, tail: 49)],
err: "ErrReorgDenied",
),
# Initialize a sync and try to extend it with a past canonical block.
TestCase(
head: block50,
extend: block49,
newState: @[Subchain(head: 50, tail: 50)],
err: "ErrReorgDenied",
),
# Initialize a sync and try to extend it with a past sidechain block.
TestCase(
head: block50,
extend: block49B,
newState: @[Subchain(head: 50, tail: 50)],
err: "ErrReorgDenied",
)
]
for z, testCase in testCases:
test "test case #" & $z:
let env = initEnv()
let skeleton = SkeletonRef.new(env.chain)
skeleton.open()
skeleton.initSync(testCase.head)
try:
skeleton.setHead(testCase.extend)
check testCase.err.len == 0
except Exception as e:
check testCase.err.len > 0
check testCase.err == e.name
check skeleton.len == testCase.newState.len
for i, sc in skeleton:
check sc.head == testCase.newState[i].head.toBlockNumber
check sc.tail == testCase.newState[i].tail.toBlockNumber
template testCond(expr: untyped) =
if not (expr):
return TestStatus.Failed
template testCond(expr, body: untyped) =
if not (expr):
body
return TestStatus.Failed
proc linkedToGenesis(env: TestEnv): TestStatus =
result = TestStatus.OK
env.chain.validateBlock = false
let skeleton = SkeletonRef.new(env.chain)
let
genesis = env.chainDB.getCanonicalHead()
block1 = BlockHeader(
blockNumber: 1.toBlockNumber, parentHash: genesis.blockHash, difficulty: 100.u256
)
block2 = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 100.u256
)
block3 = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 100.u256
)
block4 = BlockHeader(
blockNumber: 4.toBlockNumber, parentHash: block3.blockHash, difficulty: 100.u256
)
block5 = BlockHeader(
blockNumber: 5.toBlockNumber, parentHash: block4.blockHash, difficulty: 100.u256
)
skeleton.open()
skeleton.initSync(block4)
skeleton.ignoreTxs = true
discard skeleton.putBlocks([block3, block2])
testCond env.chainDB.currentBlock == 0.toBlockNumber:
error "canonical height should be at genesis"
discard skeleton.putBlocks([block1])
testCond env.chainDB.currentBlock == 4.toBlockNumber:
error "canonical height should update after being linked"
skeleton.setHead(block5, false)
testCond env.chainDB.currentBlock == 4.toBlockNumber:
error "canonical height should not change when setHead is set with force=false"
skeleton.setHead(block5, true)
testCond env.chainDB.currentBlock == 5.toBlockNumber:
error "canonical height should change when setHead is set with force=true"
var h: BlockHeader
for header in [block1, block2, block3, block4, block5]:
var res = skeleton.getHeader(header.blockNumber, h, true)
testCond res == false:
error "skeleton block should be cleaned up after filling canonical chain",
number=header.blockNumber
res = skeleton.getHeaderByHash(header.blockHash, h)
testCond res == false:
error "skeleton block should be cleaned up after filling canonical chain",
number=header.blockNumber
proc linkedPastGenesis(env: TestEnv): TestStatus =
result = TestStatus.OK
env.chain.validateBlock = false
let skeleton = SkeletonRef.new(env.chain)
skeleton.open()
let
genesis = env.chainDB.getCanonicalHead()
block1 = BlockHeader(
blockNumber: 1.toBlockNumber, parentHash: genesis.blockHash, difficulty: 100.u256
)
block2 = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 100.u256
)
block3 = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 100.u256
)
block4 = BlockHeader(
blockNumber: 4.toBlockNumber, parentHash: block3.blockHash, difficulty: 100.u256
)
block5 = BlockHeader(
blockNumber: 5.toBlockNumber, parentHash: block4.blockHash, difficulty: 100.u256
)
var body: BlockBody
let vr = env.chain.persistBlocks([block1, block2], [body, body])
testCond vr == ValidationResult.OK
skeleton.initSync(block4)
testCond env.chainDB.currentBlock == 2.toBlockNumber:
error "canonical height should be at block 2"
skeleton.ignoreTxs = true
discard skeleton.putBlocks([block3])
testCond env.chainDB.currentBlock == 4.toBlockNumber:
error "canonical height should update after being linked"
skeleton.setHead(block5, false)
testCond env.chainDB.currentBlock == 4.toBlockNumber:
error "canonical height should not change when setHead with force=false"
skeleton.setHead(block5, true)
testCond env.chainDB.currentBlock == 5.toBlockNumber:
error "canonical height should change when setHead with force=true"
var h: BlockHeader
for header in [block3, block4, block5]:
var res = skeleton.getHeader(header.blockNumber, h, true)
testCond res == false:
error "skeleton block should be cleaned up after filling canonical chain",
number=header.blockNumber
res = skeleton.getHeaderByHash(header.blockHash, h)
testCond res == false:
error "skeleton block should be cleaned up after filling canonical chain",
number=header.blockNumber
proc ccmAbortTerminalInvalid(cc: NetworkParams) =
cc.config.terminalTotalDifficulty = some(200.u256)
cc.genesis.extraData = hexToSeqByte("0x000000000000000000")
cc.genesis.difficulty = UInt256.fromHex("0x01")
proc abortTerminalInvalid(env: TestEnv): TestStatus =
result = TestStatus.OK
env.chain.validateBlock = false
let skeleton = SkeletonRef.new(env.chain)
let
genesisBlock = env.chainDB.getCanonicalHead()
block1 = BlockHeader(
blockNumber: 1.toBlockNumber, parentHash: genesisBlock.blockHash, difficulty: 100.u256
)
block2 = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 100.u256
)
block3PoW = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 100.u256
)
block3PoS = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 0.u256
#{ common, hardforkByTTD: BigInt(200) }
)
block4InvalidPoS = BlockHeader(
blockNumber: 4.toBlockNumber, parentHash: block3PoW.blockHash, difficulty: 0.u256
#{ common, hardforkByTTD: BigInt(200) }
)
block4PoS = BlockHeader(
blockNumber: 4.toBlockNumber, parentHash: block3PoS.blockHash, difficulty: 0.u256
#{ common, hardforkByTTD: BigInt(200) }
)
block5 = BlockHeader(
blockNumber: 5.toBlockNumber, parentHash: block4PoS.blockHash, difficulty: 0.u256
#{ common, hardforkByTTD: BigInt(200) }
)
skeleton.ignoreTxs = true
skeleton.open()
skeleton.initSync(block4InvalidPoS)
discard skeleton.putBlocks([block3PoW, block2])
testCond env.chainDB.currentBlock == 0.toBlockNumber:
error "canonical height should be at genesis"
discard skeleton.putBlocks([block1])
testCond env.chainDB.currentBlock == 2.toBlockNumber:
error "canonical height should stop at block 2 (valid terminal block), since block 3 is invalid (past ttd)"
try:
skeleton.setHead(block5, false)
except ErrReorgDenied:
testCond true
except:
testCond false
testCond env.chainDB.currentBlock == 2.toBlockNumber:
error "canonical height should not change when setHead is set with force=false"
# Put correct chain
skeleton.initSync(block4PoS)
try:
discard skeleton.putBlocks([block3PoS])
except ErrSyncMerged:
testCond true
except:
testCond false
testCond env.chainDB.currentBlock == 4.toBlockNumber:
error "canonical height should now be at head with correct chain"
var header: BlockHeader
testCond env.chainDB.getBlockHeader(env.chainDB.highestBlock, header):
error "cannot get block header", number = env.chainDB.highestBlock
testCond header.blockHash == block4PoS.blockHash:
error "canonical height should now be at head with correct chain"
skeleton.setHead(block5, false)
testCond skeleton.bounds().head == 5.toBlockNumber:
error "should update to new height"
proc ccmAbortAndBackstep(cc: NetworkParams) =
cc.config.terminalTotalDifficulty = some(200.u256)
cc.genesis.extraData = hexToSeqByte("0x000000000000000000")
cc.genesis.difficulty = UInt256.fromHex("0x01")
proc abortAndBackstep(env: TestEnv): TestStatus =
result = TestStatus.OK
env.chain.validateBlock = false
let skeleton = SkeletonRef.new(env.chain)
let
genesisBlock = env.chainDB.getCanonicalHead()
block1 = BlockHeader(
blockNumber: 1.toBlockNumber, parentHash: genesisBlock.blockHash, difficulty: 100.u256
)
block2 = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 100.u256
)
block3PoW = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 100.u256
)
block4InvalidPoS = BlockHeader(
blockNumber: 4.toBlockNumber, parentHash: block3PoW.blockHash, difficulty: 0.u256
#{ common, hardforkByTTD: 200 }
)
skeleton.open()
skeleton.ignoreTxs = true
skeleton.initSync(block4InvalidPoS)
discard skeleton.putBlocks([block3PoW, block2])
testCond env.chainDB.currentBlock == 0.toBlockNumber:
error "canonical height should be at genesis"
discard skeleton.putBlocks([block1])
testCond env.chainDB.currentBlock == 2.toBlockNumber:
error "canonical height should stop at block 2 (valid terminal block), since block 3 is invalid (past ttd)"
testCond skeleton.bounds().tail == 4.toBlockNumber:
error "Subchain should have been backstepped to 4"
proc ccmAbortPOSTooEarly(cc: NetworkParams) =
cc.config.terminalTotalDifficulty = some(200.u256)
#skeletonFillCanonicalBackStep: 0,
cc.genesis.difficulty = UInt256.fromHex("0x01")
proc abortPOSTooEarly(env: TestEnv): TestStatus =
result = TestStatus.OK
env.chain.validateBlock = false
let skeleton = SkeletonRef.new(env.chain)
let
genesisBlock = env.chainDB.getCanonicalHead()
block1 = BlockHeader(
blockNumber: 1.toBlockNumber, parentHash: genesisBlock.blockHash, difficulty: 100.u256
)
block2 = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 100.u256
)
block2PoS = BlockHeader(
blockNumber: 2.toBlockNumber, parentHash: block1.blockHash, difficulty: 0.u256
)
block3 = BlockHeader(
blockNumber: 3.toBlockNumber, parentHash: block2.blockHash, difficulty: 0.u256
)
skeleton.ignoreTxs = true
skeleton.open()
skeleton.initSync(block2PoS)
discard skeleton.putBlocks([block1])
testCond env.chainDB.currentBlock == 1.toBlockNumber:
error "canonical height should stop at block 1 (valid PoW block), since block 2 is invalid (invalid PoS, not past ttd)"
# Put correct chain
skeleton.initSync(block3)
try:
discard skeleton.putBlocks([block2])
except ErrSyncMerged:
testCond true
except:
testCond false
testCond env.chainDB.currentBlock == 3.toBlockNumber:
error "canonical height should now be at head with correct chain"
var header: BlockHeader
testCond env.chainDB.getBlockHeader(env.chainDB.highestBlock, header):
error "cannot get block header", number = env.chainDB.highestBlock
testCond header.blockHash == block3.blockHash:
error "canonical height should now be at head with correct chain"
suite "fillCanonicalChain tests":
type
TestCase = object
name: string
ccm : CCModify
run : proc(env: TestEnv): TestStatus
const testCases = [
TestCase(
name: "should fill the canonical chain after being linked to genesis",
run : linkedToGenesis
),
TestCase(
name: "should fill the canonical chain after being linked to a canonical block past genesis",
run : linkedPastGenesis
),
TestCase(
name: "should abort filling the canonical chain if the terminal block is invalid",
ccm : ccmAbortTerminalInvalid,
run : abortTerminalInvalid
),
TestCase(
name: "should abort filling the canonical chain and backstep if the terminal block is invalid",
ccm : ccmAbortAndBackstep,
run : abortAndBackstep
),
TestCase(
name: "should abort filling the canonical chain if a PoS block comes too early without hitting ttd",
ccm : ccmAbortPOSTooEarly,
run : abortPOSTooEarly
)
]
for testCase in testCases:
test testCase.name:
let env = initEnv(testCase.ccm)
check testCase.run(env) == TestStatus.OK
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