nimbus-eth2/tests/test_block_pool.nim

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# 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.
{.used.}
import
unittest, chronicles,
./testutil,
../beacon_chain/spec/datatypes,
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../beacon_chain/[beacon_node_types, block_pool, ssz]
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suiteReport "BlockRef and helpers" & preset():
timedTest "isAncestorOf sanity" & preset():
let
s0 = BlockRef(slot: Slot(0))
s1 = BlockRef(slot: Slot(1), parent: s0)
s2 = BlockRef(slot: Slot(2), parent: s1)
check:
s0.isAncestorOf(s0)
s0.isAncestorOf(s1)
s0.isAncestorOf(s2)
s1.isAncestorOf(s1)
s1.isAncestorOf(s2)
not s2.isAncestorOf(s0)
not s2.isAncestorOf(s1)
not s1.isAncestorOf(s0)
timedTest "getAncestorAt sanity" & preset():
let
s0 = BlockRef(slot: Slot(0))
s1 = BlockRef(slot: Slot(1), parent: s0)
s2 = BlockRef(slot: Slot(2), parent: s1)
s4 = BlockRef(slot: Slot(4), parent: s2)
check:
s0.getAncestorAt(Slot(0)) == s0
s0.getAncestorAt(Slot(1)) == s0
s1.getAncestorAt(Slot(0)) == s0
s1.getAncestorAt(Slot(1)) == s1
s4.getAncestorAt(Slot(0)) == s0
s4.getAncestorAt(Slot(1)) == s1
s4.getAncestorAt(Slot(2)) == s2
s4.getAncestorAt(Slot(3)) == s2
s4.getAncestorAt(Slot(4)) == s4
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suiteReport "BlockSlot and helpers" & preset():
timedTest "atSlot sanity" & preset():
let
s0 = BlockRef(slot: Slot(0))
s1 = BlockRef(slot: Slot(1), parent: s0)
s2 = BlockRef(slot: Slot(2), parent: s1)
s4 = BlockRef(slot: Slot(4), parent: s2)
check:
s0.atSlot(Slot(0)).blck == s0
s0.atSlot(Slot(0)) == s1.atSlot(Slot(0))
s1.atSlot(Slot(1)).blck == s1
s4.atSlot(Slot(0)).blck == s0
timedTest "parent sanity" & preset():
let
s0 = BlockRef(slot: Slot(0))
s00 = BlockSlot(blck: s0, slot: Slot(0))
s01 = BlockSlot(blck: s0, slot: Slot(1))
s2 = BlockRef(slot: Slot(2), parent: s0)
s22 = BlockSlot(blck: s2, slot: Slot(2))
s24 = BlockSlot(blck: s2, slot: Slot(4))
check:
s00.parent == BlockSlot(blck: nil, slot: Slot(0))
s01.parent == s00
s22.parent == s01
s24.parent == BlockSlot(blck: s2, slot: Slot(3))
s24.parent.parent == s22
when const_preset == "minimal": # Too much stack space used on mainnet
import
options, sequtils,
./testblockutil,
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../beacon_chain/state_transition,
../beacon_chain/spec/[digest, helpers, validator]
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suiteReport "Block pool processing" & preset():
setup:
var
db = makeTestDB(SLOTS_PER_EPOCH)
pool = BlockPool.init(db)
state = newClone(pool.loadTailState().data.data)
b1 = addTestBlock(state[], pool.tail.root)
b1Root = hash_tree_root(b1.message)
b2 = addTestBlock(state[], b1Root)
b2Root {.used.} = hash_tree_root(b2.message)
timedTest "getRef returns nil for missing blocks":
check:
pool.getRef(default Eth2Digest) == nil
timedTest "loadTailState gets genesis block on first load" & preset():
let
b0 = pool.get(pool.tail.root)
check:
b0.isSome()
timedTest "Simple block add&get" & preset():
let
b1Add = pool.add(b1Root, b1)
b1Get = pool.get(b1Root)
check:
b1Get.isSome()
b1Get.get().refs.root == b1Root
b1Add.root == b1Get.get().refs.root
pool.heads.len == 1
pool.heads[0].blck == b1Add
let
b2Add = pool.add(b2Root, b2)
b2Get = pool.get(b2Root)
check:
b2Get.isSome()
b2Get.get().refs.root == b2Root
b2Add.root == b2Get.get().refs.root
pool.heads.len == 1
pool.heads[0].blck == b2Add
# Skip one slot to get a gap
process_slots(state[], state.slot + 1)
let
b4 = addTestBlock(state[], b2Root)
b4Root = hash_tree_root(b4.message)
b4Add = pool.add(b4Root, b4)
check:
b4Add.parent == b2Add
pool.updateHead(b4Add)
var blocks: array[3, BlockRef]
check:
pool.getBlockRange(Slot(0), 1, blocks.toOpenArray(0, 0)) == 0
blocks[0..<1] == [pool.tail]
pool.getBlockRange(Slot(0), 1, blocks.toOpenArray(0, 1)) == 0
blocks[0..<2] == [pool.tail, b1Add]
pool.getBlockRange(Slot(0), 2, blocks.toOpenArray(0, 1)) == 0
blocks[0..<2] == [pool.tail, b2Add]
pool.getBlockRange(Slot(0), 3, blocks.toOpenArray(0, 1)) == 1
blocks[0..<2] == [nil, pool.tail] # block 3 is missing!
pool.getBlockRange(Slot(2), 2, blocks.toOpenArray(0, 1)) == 0
blocks[0..<2] == [b2Add, b4Add] # block 3 is missing!
# empty length
pool.getBlockRange(Slot(2), 2, blocks.toOpenArray(0, -1)) == 0
# No blocks in sight
pool.getBlockRange(Slot(5), 1, blocks.toOpenArray(0, 1)) == 2
# No blocks in sight either due to gaps
pool.getBlockRange(Slot(3), 2, blocks.toOpenArray(0, 1)) == 2
blocks[0..<2] == [BlockRef nil, nil] # block 3 is missing!
timedTest "Reverse order block add & get" & preset():
discard pool.add(b2Root, b2)
check:
pool.get(b2Root).isNone() # Unresolved, shouldn't show up
FetchRecord(root: b1Root, historySlots: 1) in pool.checkMissing()
discard pool.add(b1Root, b1)
let
b1Get = pool.get(b1Root)
b2Get = pool.get(b2Root)
check:
b1Get.isSome()
b2Get.isSome()
b1Get.get().refs.children[0] == b2Get.get().refs
b2Get.get().refs.parent == b1Get.get().refs
pool.updateHead(b2Get.get().refs)
# The heads structure should have been updated to contain only the new
# b2 head
check:
pool.heads.mapIt(it.blck) == @[b2Get.get().refs]
# check that init also reloads block graph
var
pool2 = BlockPool.init(db)
check:
# ensure we loaded the correct head state
pool2.head.blck.root == b2Root
hash_tree_root(pool2.headState.data.data) == b2.message.state_root
pool2.get(b1Root).isSome()
pool2.get(b2Root).isSome()
pool2.heads.len == 1
pool2.heads[0].blck.root == b2Root
timedTest "Can add same block twice" & preset():
let
b10 = pool.add(b1Root, b1)
b11 = pool.add(b1Root, b1)
check:
b10 == b11
not b10.isNil
timedTest "updateHead updates head and headState" & preset():
let
b1Add = pool.add(b1Root, b1)
pool.updateHead(b1Add)
check:
pool.head.blck == b1Add
pool.headState.data.data.slot == b1Add.slot
timedTest "updateStateData sanity" & preset():
let
b1Add = pool.add(b1Root, b1)
b2Add = pool.add(b2Root, b2)
bs1 = BlockSlot(blck: b1Add, slot: b1.message.slot)
bs1_3 = b1Add.atSlot(3.Slot)
bs2_3 = b2Add.atSlot(3.Slot)
var tmpState = newClone(pool.headState)
# move to specific block
pool.updateStateData(tmpState[], bs1)
check:
tmpState.blck == b1Add
tmpState.data.data.slot == bs1.slot
# Skip slots
pool.updateStateData(tmpState[], bs1_3) # skip slots
check:
tmpState.blck == b1Add
tmpState.data.data.slot == bs1_3.slot
# Move back slots, but not blocks
pool.updateStateData(tmpState[], bs1_3.parent())
check:
tmpState.blck == b1Add
tmpState.data.data.slot == bs1_3.parent().slot
# Move to different block and slot
pool.updateStateData(tmpState[], bs2_3)
check:
tmpState.blck == b2Add
tmpState.data.data.slot == bs2_3.slot
# Move back slot and block
pool.updateStateData(tmpState[], bs1)
check:
tmpState.blck == b1Add
tmpState.data.data.slot == bs1.slot
# Move back to genesis
pool.updateStateData(tmpState[], bs1.parent())
check:
tmpState.blck == b1Add.parent
tmpState.data.data.slot == bs1.parent.slot
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suiteReport "BlockPool finalization tests" & preset():
setup:
var
db = makeTestDB(SLOTS_PER_EPOCH)
pool = BlockPool.init(db)
timedTest "prune heads on finalization" & preset():
block:
# Create a fork that will not be taken
var
blck = makeTestBlock(pool.headState.data.data, pool.head.blck.root)
discard pool.add(hash_tree_root(blck.message), blck)
for i in 0 ..< (SLOTS_PER_EPOCH * 6):
if i == 1:
# There are 2 heads now because of the fork at slot 1
check:
pool.tail.children.len == 2
pool.heads.len == 2
var
cache = get_empty_per_epoch_cache()
blck = makeTestBlock(
pool.headState.data.data, pool.head.blck.root,
attestations = makeFullAttestations(
pool.headState.data.data, pool.head.blck.root,
pool.headState.data.data.slot, cache, {}))
let added = pool.add(hash_tree_root(blck.message), blck)
pool.updateHead(added)
check:
pool.heads.len() == 1
pool.head.justified.slot.compute_epoch_at_slot() == 5
pool.tail.children.len == 1
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let
pool2 = BlockPool.init(db)
# check that the state reloaded from database resembles what we had before
check:
pool2.tail.root == pool.tail.root
pool2.head.blck.root == pool.head.blck.root
pool2.finalizedHead.blck.root == pool.finalizedHead.blck.root
pool2.finalizedHead.slot == pool.finalizedHead.slot
hash_tree_root(pool2.headState.data.data) ==
hash_tree_root(pool.headState.data.data)
hash_tree_root(pool2.justifiedState.data.data) ==
hash_tree_root(pool.justifiedState.data.data)
timedTest "init with gaps" & preset():
var cache = get_empty_per_epoch_cache()
for i in 0 ..< (SLOTS_PER_EPOCH * 6 - 2):
var
blck = makeTestBlock(
pool.headState.data.data, pool.head.blck.root,
attestations = makeFullAttestations(
pool.headState.data.data, pool.head.blck.root,
pool.headState.data.data.slot, cache, {}))
let added = pool.add(hash_tree_root(blck.message), blck)
pool.updateHead(added)
# Advance past epoch so that the epoch transition is gapped
process_slots(pool.headState.data.data, Slot(SLOTS_PER_EPOCH * 6 + 2) )
var blck = makeTestBlock(
pool.headState.data.data, pool.head.blck.root,
attestations = makeFullAttestations(
pool.headState.data.data, pool.head.blck.root,
pool.headState.data.data.slot, cache, {}))
let added = pool.add(hash_tree_root(blck.message), blck)
pool.updateHead(added)
let
pool2 = BlockPool.init(db)
# check that the state reloaded from database resembles what we had before
check:
pool2.tail.root == pool.tail.root
pool2.head.blck.root == pool.head.blck.root
pool2.finalizedHead.blck.root == pool.finalizedHead.blck.root
pool2.finalizedHead.slot == pool.finalizedHead.slot
hash_tree_root(pool2.headState.data.data) ==
hash_tree_root(pool.headState.data.data)
hash_tree_root(pool2.justifiedState.data.data) ==
hash_tree_root(pool.justifiedState.data.data)