nimbus-eth2/tests/test_zero_signature.nim

60 lines
2.0 KiB
Nim

# beacon_chain
# Copyright (c) 2018 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.
{.used.}
import
unittest, ./testutil,
../beacon_chain/spec/[datatypes, crypto],
../beacon_chain/ssz
# Sanity checks to make sure all the workarounds introduced
# to deal with https://github.com/status-im/nim-beacon-chain/issues/374
# and https://github.com/ethereum/eth2.0-specs/issues/1396
# don't blow up.
suiteReport "Zero signature sanity checks":
# Using signature directly triggers a bug
# in object_serialization/stew: https://github.com/status-im/nim-beacon-chain/issues/396
# test "SSZ serialization round-trip doesn't un-zero the signature":
# let zeroSig = BlsValue[Signature](kind: OpaqueBlob)
# check:
# block:
# var allZeros = true
# for val in zeroSig.blob:
# allZeros = allZeros and val == 0
# allZeros
# let sszZeroSig = SSZ.encode(zeroSig)
# let deserZeroSig = SSZ.decode(sszZeroSig, ValidatorSig)
# check(zeroSIg == deserZeroSig)
timedTest "SSZ serialization roundtrip of SignedBeaconBlockHeader":
let defaultBlockHeader = SignedBeaconBlockHeader(
signature: ValidatorSig()
)
check:
block:
let sigBytes = cast[ptr array[ValidatorSig.sizeof(), byte]](
defaultBlockHeader.signature.unsafeAddr)
var allZeros = true
for i in 0 ..< ValidatorSig.sizeof():
allZeros = allZeros and sigBytes[i] == byte 0
allZeros
let sszDefaultBlockHeader = SSZ.encode(defaultBlockHeader)
let deserBlockHeader =
SSZ.decode(sszDefaultBlockHeader, SignedBeaconBlockHeader)
check(defaultBlockHeader == deserBlockHeader)