nimbus-eth2/tests/spec_block_processing/test_process_attestation.nim

98 lines
3.4 KiB
Nim

# beacon_chain
# Copyright (c) 2018-2020 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.
# process_attestation (beaconstate.nim)
# https://github.com/ethereum/eth2.0-specs/blob/v0.12.3/specs/phase0/beacon-chain.md#attestations
# ---------------------------------------------------------------
{.used.}
import
# Standard library
unittest,
stew/results,
# Specs
../../beacon_chain/spec/[beaconstate, datatypes, helpers],
# Mock helpers
../mocking/[mock_genesis, mock_attestations, mock_state],
../testutil
suiteReport "[Unit - Spec - Block processing] Attestations " & preset():
const NumValidators = uint64(8) * SLOTS_PER_EPOCH
let genesisState = newClone(initGenesisState(NumValidators))
doAssert genesisState.data.validators.lenu64 == NumValidators
template valid_attestation(name: string, body: untyped): untyped {.dirty.}=
# Process a valid attestation
#
# The BeaconState is exposed as "state" in the calling context
# The attestation to process must be named "attestation" in the calling context
timedTest name:
var state {.inject.} = newClone(genesisState[])
# Attestation setup body
# ----------------------------------------
body
# Params for sanity checks
# ----------------------------------------
let
current_epoch_count = state.data.current_epoch_attestations.len
previous_epoch_count = state.data.previous_epoch_attestations.len
# State transition
# ----------------------------------------
var cache = StateCache()
check process_attestation(
state.data, attestation, flags = {}, cache
).isOk
# Check that the attestation was processed
if attestation.data.target.epoch == get_current_epoch(state.data):
check(state.data.current_epoch_attestations.len == current_epoch_count + 1)
else:
check(state.data.previous_epoch_attestations.len == previous_epoch_count + 1)
valid_attestation("Valid attestation"):
let attestation = mockAttestation(state.data)
state.data.slot += MIN_ATTESTATION_INCLUSION_DELAY
valid_attestation("Valid attestation from previous epoch"):
nextSlot(state[])
let attestation = mockAttestation(state.data)
state.data.slot = Slot(SLOTS_PER_EPOCH - 1)
nextEpoch(state[])
# TODO: regression BLS V0.10.1
echo "[Skipping] \"Empty aggregation bit\""
# valid_attestation("Empty aggregation bit"):
# var attestation = mockAttestation(state)
# state.data.slot += MIN_ATTESTATION_INCLUSION_DELAY
# # Overwrite committee
# attestation.aggregation_bits = init(CommitteeValidatorsBits, attestation.aggregation_bits.len)
# signMockAttestation(state, attestation)
# TODO - invalid attestations
# - Wrong end epoch
# - Invalid signature
# - Before inclusion delay
# - past last inclusion slot
# - before oldest known source epoch
# - wrong shard
# - invalid shard
# - target epoch too old
# - target epoch too far in the future
# - source epoch in the future
# - invalid current source root
# - bad source root
# - inconsistent custody bits length
# - non-empty custody bits in phase 0