nimbus-eth2/tests/test_attestation_pool.nim

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# 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 http://opensource.org/licenses/MIT).
# * Apache v2 license (license terms in the root directory or at http://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
options, sequtils, unittest,
./testutil,
../beacon_chain/spec/[beaconstate, crypto, datatypes, digest, helpers, validator],
../beacon_chain/[beacon_node_types, attestation_pool, block_pool, extras, state_transition, ssz]
template withPool(body: untyped) =
mixin genState, genBlock
var
blockPool {.inject.} = BlockPool.init(makeTestDB(genState, genBlock))
pool {.inject.} = AttestationPool.init(blockPool)
state {.inject.} = loadTailState(blockPool)
# Slot 0 is a finalized slot - won't be making attestations for it..
process_slots(state.data, state.data.data.slot + 1)
body
suite "Attestation pool processing" & preset():
## For now just test that we can compile and execute block processing with
## mock data.
# Genesis state that results in 2 members per committee
let
genState = initialize_beacon_state_from_eth1(
makeInitialDeposits(SLOTS_PER_EPOCH * 2, {skipValidation}), 0, Eth1Data(),
{skipValidation})
genBlock = get_initial_beacon_block(genState)
test "Can add and retrieve simple attestation" & preset():
var cache = get_empty_per_epoch_cache()
withPool:
let
# Create an attestation for slot 1!
crosslink_committee = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 1, cache)
attestation = makeAttestation(
state.data.data, state.blck.root, crosslink_committee[0])
pool.add(state.data.data, attestation)
process_slots(state.data, MIN_ATTESTATION_INCLUSION_DELAY.Slot) # minus 1?
let attestations = pool.getAttestationsForBlock(
state.data.data, state.data.data.slot + 1)
check:
attestations.len == 1
test "Attestations may arrive in any order" & preset():
var cache = get_empty_per_epoch_cache()
withPool:
let
# Create an attestation for slot 1!
cc0 = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 1, cache)
attestation0 = makeAttestation(
state.data.data, state.blck.root, cc0[0])
process_slots(state.data, state.data.data.slot + 1)
let
cc1 = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 2, cache)
attestation1 = makeAttestation(
state.data.data, state.blck.root, cc1[0])
# test reverse order
pool.add(state.data.data, attestation1)
pool.add(state.data.data, attestation0)
process_slots(state.data, MIN_ATTESTATION_INCLUSION_DELAY.Slot) # minus 1?
let attestations = pool.getAttestationsForBlock(
state.data.data, state.data.data.slot + 1)
check:
attestations.len == 1
test "Attestations should be combined" & preset():
var cache = get_empty_per_epoch_cache()
withPool:
let
# Create an attestation for slot 1!
cc0 = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 1, cache)
attestation0 = makeAttestation(
state.data.data, state.blck.root, cc0[0])
attestation1 = makeAttestation(
state.data.data, state.blck.root, cc0[1])
pool.add(state.data.data, attestation0)
pool.add(state.data.data, attestation1)
process_slots(state.data, MIN_ATTESTATION_INCLUSION_DELAY.Slot) # minus 1?
let attestations = pool.getAttestationsForBlock(
state.data.data, state.data.data.slot + 1)
check:
attestations.len == 1
test "Attestations may overlap, bigger first" & preset():
var cache = get_empty_per_epoch_cache()
withPool:
var
# Create an attestation for slot 1!
cc0 = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 1, cache)
attestation0 = makeAttestation(
state.data.data, state.blck.root, cc0[0])
attestation1 = makeAttestation(
state.data.data, state.blck.root, cc0[1])
attestation0.combine(attestation1, {skipValidation})
pool.add(state.data.data, attestation0)
pool.add(state.data.data, attestation1)
process_slots(state.data, MIN_ATTESTATION_INCLUSION_DELAY.Slot) # minus 1?
let attestations = pool.getAttestationsForBlock(
state.data.data, state.data.data.slot + 1)
check:
attestations.len == 1
test "Attestations may overlap, smaller first" & preset():
var cache = get_empty_per_epoch_cache()
withPool:
var
# Create an attestation for slot 1!
cc0 = get_crosslink_committee(state.data.data,
compute_epoch_of_slot(state.data.data.slot), 1, cache)
attestation0 = makeAttestation(
state.data.data, state.blck.root, cc0[0])
attestation1 = makeAttestation(
state.data.data, state.blck.root, cc0[1])
attestation0.combine(attestation1, {skipValidation})
pool.add(state.data.data, attestation1)
pool.add(state.data.data, attestation0)
process_slots(state.data, MIN_ATTESTATION_INCLUSION_DELAY.Slot) # minus 1?
let attestations = pool.getAttestationsForBlock(
state.data.data, state.data.data.slot + 1)
check:
attestations.len == 1