nimbus-eth1/fluffy/tests/test_beacon_chain_block_pro...

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# Nimbus
# Copyright (c) 2022-2023 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.}
when (NimMajor, NimMinor) < (1, 4):
{.push raises: [Defect].}
else:
{.push raises: [].}
import
unittest2,
beacon_chain/spec/forks,
beacon_chain/spec/datatypes/bellatrix,
beacon_chain/../tests/testblockutil,
# Mock helpers
beacon_chain/../tests/mocking/mock_genesis,
../network/history/experimental/beacon_chain_block_proof
# Test suite for the proofs:
# - HistoricalRootsProof
# - BeaconBlockHeaderProof
# - BeaconBlockBodyProof
# and as last
# - the chain of proofs, BeaconChainBlockProof:
# BlockHash || BlockHeader
# -> BeaconBlockBodyProof
# -> BeaconBlockHeaderProof
# -> HistoricalRootsProof
# historical_roots
#
# Note: The last test makes the others redundant, but keeping them all around
# for now as it might be sufficient to go with just HistoricalRootsProof (and
# perhaps BeaconBlockHeaderProof), see comments in beacon_chain_proofs.nim.
#
# TODO: Add more blocks to reach 1+ historical roots, to make sure that indexing
# is properly tested.
suite "Beacon Chain Block Proofs":
let
cfg = block:
var res = defaultRuntimeConfig
res.ALTAIR_FORK_EPOCH = GENESIS_EPOCH
res.BELLATRIX_FORK_EPOCH = GENESIS_EPOCH
res
state = newClone(initGenesisState(cfg = cfg))
var cache = StateCache()
var blocks: seq[bellatrix.SignedBeaconBlock]
# Note:
# Adding 8192 blocks. First block is genesis block and not one of these.
# Then one extra block is needed to get the historical roots, block
# roots and state roots processed.
# index i = 0 is second block.
# index i = 8190 is 8192th block and last one that is part of the first
# historical root
for i in 0..<SLOTS_PER_HISTORICAL_ROOT:
blocks.add(addTestBlock(state[], cache, cfg = cfg).bellatrixData)
# Starts from the block after genesis.
const blocksToTest = [
0'u64, 1, 2, 3,
SLOTS_PER_HISTORICAL_ROOT div 2,
SLOTS_PER_HISTORICAL_ROOT - 3,
SLOTS_PER_HISTORICAL_ROOT - 2
]
test "HistoricalRootsProof for BeaconBlockHeader":
let
# Historical batch of first historical root
batch = HistoricalBatch(
block_roots: getStateField(state[], block_roots).data,
state_roots: getStateField(state[], state_roots).data)
historical_roots = getStateField(state[], historical_roots)
# for i in 0..<(SLOTS_PER_HISTORICAL_ROOT - 1): # Test all blocks
for i in blocksToTest:
let
beaconBlock = blocks[i].message
historicalRootsIndex = getHistoricalRootsIndex(beaconBlock.slot)
blockRootIndex = getBlockRootsIndex(beaconBlock.slot, historicalRootsIndex)
let res = buildProof(batch, blockRootIndex)
check res.isOk()
let proof = res.get()
check verifyProof(
blocks[i].root, proof,
historical_roots[historicalRootsIndex], blockRootIndex)
test "BeaconBlockHeaderProof for BeaconBlockBody":
# for i in 0..<(SLOTS_PER_HISTORICAL_ROOT - 1): # Test all blocks
for i in blocksToTest:
let
beaconBlock = blocks[i].message
beaconBlockHeader = BeaconBlockHeader(
slot: beaconBlock.slot,
proposer_index: beaconBlock.proposer_index,
parent_root: beaconBlock.parent_root,
state_root: beaconBlock.state_root,
body_root: hash_tree_root(beaconBlock.body)
)
beaconBlockBody = beaconBlock.body
let res = buildProof(beaconBlockHeader)
check res.isOk()
let proof = res.get()
let leave = hash_tree_root(beaconBlockBody)
check verifyProof(leave, proof, blocks[i].root)
test "BeaconBlockBodyProof for Execution BlockHeader":
# for i in 0..<(SLOTS_PER_HISTORICAL_ROOT - 1): # Test all blocks
for i in blocksToTest:
let beaconBlockBody = blocks[i].message.body
let res = buildProof(beaconBlockBody)
check res.isOk()
let proof = res.get()
let leave = beaconBlockBody.execution_payload.block_hash
let root = hash_tree_root(beaconBlockBody)
check verifyProof(leave, proof, root)
test "BeaconChainBlockProof for Execution BlockHeader":
let
# Historical batch of first historical root
batch = HistoricalBatch(
block_roots: getStateField(state[], block_roots).data,
state_roots: getStateField(state[], state_roots).data)
historical_roots = getStateField(state[], historical_roots)
# for i in 0..<(SLOTS_PER_HISTORICAL_ROOT - 1): # Test all blocks
for i in blocksToTest:
let
beaconBlock = blocks[i].message
beaconBlockHeader = BeaconBlockHeader(
slot: beaconBlock.slot,
proposer_index: beaconBlock.proposer_index,
parent_root: beaconBlock.parent_root,
state_root: beaconBlock.state_root,
body_root: hash_tree_root(beaconBlock.body)
)
beaconBlockBody = beaconBlock.body
# Normally we would have an execution BlockHeader that holds this
# value, but we skip the creation of that header for now and just take
# the blockHash from the execution payload.
blockHash = beaconBlockBody.execution_payload.block_hash
let proofRes = buildProof(batch, beaconBlockHeader, beaconBlockBody)
check proofRes.isOk()
let proof = proofRes.get()
check verifyProof(historical_roots, proof, blockHash)