nimbus-eth2/tests/consensus_spec/fixtures_utils.nim

139 lines
4.7 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2022 Status Research & Development GmbH
# Licensed and distributed under either of
# * MIT license (license terms in the root directory or at https://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at https://www.apache.org/licenses/LICENSE-2.0).
# at your option. This file may not be copied, modified, or distributed except according to those terms.
import
# Standard library
std/[os, strutils, typetraits],
# Internals
../../beacon_chain/spec/datatypes/[phase0, altair, bellatrix],
../../beacon_chain/spec/[
eth2_merkleization, eth2_ssz_serialization, forks],
# Status libs,
snappy,
stew/byteutils
export
eth2_merkleization, eth2_ssz_serialization
# Process current EF test format
# ---------------------------------------------
# #######################
# Path parsing
func forkForPathComponent*(forkPath: string): Opt[BeaconStateFork] =
for fork in BeaconStateFork:
if ($fork).toLowerAscii() == forkPath:
return ok fork
err()
# #######################
# JSON deserialization
func readValue*(r: var JsonReader, a: var seq[byte]) =
## Custom deserializer for seq[byte]
a = hexToSeqByte(r.readValue(string))
# #######################
# Mock RuntimeConfig
func genesisTestRuntimeConfig*(stateFork: BeaconStateFork): RuntimeConfig =
var res = defaultRuntimeConfig
case stateFork
of BeaconStateFork.Bellatrix:
res.BELLATRIX_FORK_EPOCH = GENESIS_EPOCH
res.ALTAIR_FORK_EPOCH = GENESIS_EPOCH
of BeaconStateFork.Altair:
res.ALTAIR_FORK_EPOCH = GENESIS_EPOCH
of BeaconStateFork.Phase0:
discard
res
# #######################
# Test helpers
type
UnconsumedInput* = object of CatchableError
TestSizeError* = object of ValueError
# https://github.com/ethereum/consensus-specs/tree/v1.2.0-rc.1/tests/formats/rewards#rewards-tests
Deltas* = object
rewards*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
penalties*: List[uint64, Limit VALIDATOR_REGISTRY_LIMIT]
# https://github.com/ethereum/consensus-specs/blob/v1.2.0/specs/phase0/validator.md#eth1block
Eth1Block* = object
timestamp*: uint64
deposit_root*: Eth2Digest
deposit_count*: uint64
# All other eth1 block fields
const
FixturesDir* =
currentSourcePath.rsplit(DirSep, 1)[0] / ".." / ".." / "vendor" / "nim-eth2-scenarios"
SszTestsDir* = FixturesDir / "tests-v" & SPEC_VERSION
MaxObjectSize* = 3_000_000
proc parseTest*(path: string, Format: typedesc[Json], T: typedesc): T =
try:
# debugEcho " [Debug] Loading file: \"", path, '\"'
result = Format.loadFile(path, T)
except SerializationError as err:
writeStackTrace()
stderr.write $Format & " load issue for file \"", path, "\"\n"
stderr.write err.formatMsg(path), "\n"
quit 1
template readFileBytes*(path: string): seq[byte] =
cast[seq[byte]](readFile(path))
proc sszDecodeEntireInput*(input: openArray[byte], Decoded: type): Decoded =
let stream = unsafeMemoryInput(input)
var reader = init(SszReader, stream)
reader.readValue(result)
if stream.readable:
raise newException(UnconsumedInput, "Remaining bytes in the input")
iterator walkTests*(dir: static string): string =
for kind, path in walkDir(
dir/"pyspec_tests", relative = true, checkDir = true):
yield path
proc parseTest*(path: string, Format: typedesc[SSZ], T: typedesc): T =
try:
# debugEcho " [Debug] Loading file: \"", path, '\"'
sszDecodeEntireInput(snappy.decode(readFileBytes(path), MaxObjectSize), T)
except SerializationError as err:
writeStackTrace()
stderr.write $Format & " load issue for file \"", path, "\"\n"
stderr.write err.formatMsg(path), "\n"
quit 1
proc loadForkedState*(
path: string, fork: BeaconStateFork): ref ForkedHashedBeaconState =
# TODO stack usage. newClone and assignClone do not seem to
# prevent temporaries created by case objects
let forkedState = new ForkedHashedBeaconState
case fork
of BeaconStateFork.Bellatrix:
let state = newClone(parseTest(path, SSZ, bellatrix.BeaconState))
forkedState.kind = BeaconStateFork.Bellatrix
forkedState.bellatrixData.data = state[]
forkedState.bellatrixData.root = hash_tree_root(state[])
of BeaconStateFork.Altair:
let state = newClone(parseTest(path, SSZ, altair.BeaconState))
forkedState.kind = BeaconStateFork.Altair
forkedState.altairData.data = state[]
forkedState.altairData.root = hash_tree_root(state[])
of BeaconStateFork.Phase0:
let state = newClone(parseTest(path, SSZ, phase0.BeaconState))
forkedState.kind = BeaconStateFork.Phase0
forkedState.phase0Data.data = state[]
forkedState.phase0Data.root = hash_tree_root(state[])
forkedState