nimbus-eth2/tests/test_statediff.nim

73 lines
3.0 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2023 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.}
import
unittest2,
./testutil, ./testdbutil, ./teststateutil,
../beacon_chain/spec/forks,
../beacon_chain/consensus_object_pools/[blockchain_dag, block_quarantine]
from std/sequtils import mapIt
from ../beacon_chain/statediff import
applyDiff, diffStates, getBeaconStateDiffSummary
# In live usage, it's unnecessary and excessive to keep both states in memory
# at once, but it simplifies testing so treat this explicitly as testing-only
# infrastructure.
func diffStates(state0, state1: capella.BeaconState): BeaconStateDiff =
doAssert state1.slot > state0.slot
doAssert state0.slot.is_epoch
doAssert state1.slot == state0.slot + SLOTS_PER_EPOCH
# TODO not here, but in dag, an isancestorof check
doAssert state0.genesis_time == state1.genesis_time
doAssert state0.genesis_validators_root == state1.genesis_validators_root
doAssert state0.fork == state1.fork
doAssert state1.historical_roots == state0.historical_roots
doAssert state1.historical_summaries.len -
state0.historical_summaries.len in [0, 1]
diffStates(getBeaconStateDiffSummary(state0), state1)
when isMainModule:
import chronicles # or some random compile error happens...
suite "state diff tests" & preset():
setup:
var
db = makeTestDB(SLOTS_PER_EPOCH)
validatorMonitor = newClone(ValidatorMonitor.init())
dag = init(ChainDAGRef, defaultRuntimeConfig, db, validatorMonitor, {})
test "random slot differences" & preset():
let testStates = getTestStates(dag.headState, ConsensusFork.Capella)
for i in 0 ..< testStates.len:
for j in (i+1) ..< testStates.len:
doAssert getStateField(testStates[i][], slot) <
getStateField(testStates[j][], slot)
if getStateField(testStates[i][], slot) + SLOTS_PER_EPOCH !=
getStateField(testStates[j][], slot):
continue
let
tmpStateApplyBase = assignClone(testStates[i].capellaData.data)
diff = diffStates(
testStates[i].capellaData.data, testStates[j].capellaData.data)
# Immutable parts of validators stored separately, so aren't part of
# the state diff. Synthesize required portion here for testing.
applyDiff(
tmpStateApplyBase[],
mapIt(
getStateField(testStates[j][], validators).asSeq[
getStateField(testStates[i][], validators).len ..
getStateField(testStates[j][], validators).len - 1],
it.getImmutableValidatorData),
diff)
check hash_tree_root(testStates[j][].capellaData.data) ==
hash_tree_root(tmpStateApplyBase[])