nimbus-eth2/tests/test_discovery.nim

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{.used.}
import
unittest2,
chronos, stew/shims/net, eth/keys, eth/p2p/discoveryv5/enr,
../beacon_chain/spec/datatypes/base,
../beacon_chain/networking/[eth2_network, eth2_discovery],
./testutil
template asyncTest*(name, body: untyped) =
test name:
proc scenario {.async.} = {.gcsafe.}: body
waitFor scenario()
proc new*(T: type Eth2DiscoveryProtocol,
pk: keys.PrivateKey,
enrIp: Option[ValidIpAddress], enrTcpPort, enrUdpPort: Option[Port],
bindPort: Port, bindIp: ValidIpAddress,
enrFields: openArray[(string, seq[byte])] = [],
rng: ref BrHmacDrbgContext):
T {.raises: [Exception, Defect].} =
newProtocol(pk, enrIp, enrTcpPort, enrUdpPort, enrFields,
bindPort = bindPort, bindIp = bindIp, rng = rng)
proc generateNode(rng: ref BrHmacDrbgContext, port: Port,
enrFields: openArray[(string, seq[byte])] = []): Eth2DiscoveryProtocol =
let ip = ValidIpAddress.init("127.0.0.1")
Eth2DiscoveryProtocol.new(keys.PrivateKey.random(rng[]),
some(ip), some(port), some(port), port, ip, enrFields, rng = rng)
suite "Eth2 specific discovery tests":
let
rng = keys.newRng()
enrForkId = ENRForkID(
fork_digest: ForkDigest([byte 0, 1, 2, 3]),
next_fork_version: Version([byte 0, 0, 0, 0]),
next_fork_epoch: Epoch(0))
asyncTest "Subnet query":
var attnets: BitArray[ATTESTATION_SUBNET_COUNT]
attnets.setBit(34)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001),
{"eth2": SSZ.encode(enrForkId), "attnets": SSZ.encode(attnets)})
node1.open()
node2.open()
# ping in one direction to add node2 to routing table of node1
check (await node2.ping(node1.localNode)).isOk()
var attnetsSelected: BitArray[ATTESTATION_SUBNET_COUNT]
attnetsSelected.setBit(42)
attnetsSelected.setBit(34)
let discovered = await node1.queryRandom(enrForkId, attnetsSelected)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()
asyncTest "Invalid attnets field":
var invalidAttnets: BitArray[ATTESTATION_SUBNET_COUNT div 2]
invalidAttnets.setBit(15)
# TODO: This doesn't fail actually.
# var invalidAttnets2: BitArray[ATTESTATION_SUBNET_COUNT * 2]
# invalidAttnets2.setBit(15)
var attnets: BitArray[ATTESTATION_SUBNET_COUNT]
attnets.setBit(15)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001),
{"eth2": SSZ.encode(enrForkId), "attnets": SSZ.encode(invalidAttnets)})
node3 = generateNode(rng, Port(5002),
{"eth2": SSZ.encode(enrForkId), "attnets": SSZ.encode(attnets)})
node1.open()
node2.open()
node3.open()
check (await node2.ping(node1.localNode)).isOk()
check (await node3.ping(node1.localNode)).isOk()
var attnetsSelected: BitArray[ATTESTATION_SUBNET_COUNT]
attnetsSelected.setBit(15)
attnetsSelected.setBit(42)
let discovered = await node1.queryRandom(enrForkId, attnetsSelected)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()
await node3.closeWait()
asyncTest "Subnet query after ENR update":
var attnets: BitArray[ATTESTATION_SUBNET_COUNT]
attnets.setBit(1)
let
node1 = generateNode(rng, Port(5000))
node2 = generateNode(rng, Port(5001),
{"eth2": SSZ.encode(enrForkId), "attnets": SSZ.encode(attnets)})
node1.open()
node2.open()
check (await node2.ping(node1.localNode)).isOk()
var attnetsSelected: BitArray[ATTESTATION_SUBNET_COUNT]
attnetsSelected.setBit(2)
block:
let discovered = await node1.queryRandom(enrForkId, attnetsSelected)
check discovered.len == 0
block:
attnets.setBit(2)
check node2.updateRecord(
{"eth2": SSZ.encode(enrForkId), "attnets": SSZ.encode(attnets)}).isOk()
let nodes = await node1.findNode(node2.localNode, @[0'u16])
check nodes.isOk() and nodes[].len > 0
discard node1.addNode(nodes[][0])
let discovered = await node1.queryRandom(enrForkId, attnetsSelected)
check discovered.len == 1
await node1.closeWait()
await node2.closeWait()