123 lines
3.6 KiB
Nim
123 lines
3.6 KiB
Nim
# beacon_chain
|
|
# Copyright (c) 2018-2021 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.
|
|
|
|
# import ../interpreter # included to be able to use "suite"
|
|
|
|
func setup_finality_01(): tuple[fork_choice: ForkChoiceBackend, ops: seq[Operation]] =
|
|
var balances = @[Gwei(1), Gwei(1)]
|
|
let GenesisRoot = fakeHash(0)
|
|
|
|
# Initialize the fork choice context
|
|
result.fork_choice = ForkChoiceBackend.init(
|
|
justifiedCheckpoint = Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
finalizedCheckpoint = Checkpoint(root: GenesisRoot, epoch: Epoch(0))
|
|
)
|
|
|
|
# ----------------------------------
|
|
|
|
# Head should be genesis
|
|
result.ops.add Operation(
|
|
kind: FindHead,
|
|
justified_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
finalized_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
justified_state_balances: balances,
|
|
expected_head: GenesisRoot
|
|
)
|
|
|
|
# Build the following chain
|
|
#
|
|
# 0 <- just: 0, fin: 0
|
|
# |
|
|
# 1 <- just: 0, fin: 0
|
|
# |
|
|
# 2 <- just: 1, fin: 0
|
|
# |
|
|
# 3 <- just: 2, fin: 1
|
|
result.ops.add Operation(
|
|
kind: ProcessBlock,
|
|
root: fakeHash(1),
|
|
parent_root: GenesisRoot,
|
|
blk_justified_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
blk_finalized_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0))
|
|
)
|
|
result.ops.add Operation(
|
|
kind: ProcessBlock,
|
|
root: fakeHash(2),
|
|
parent_root: fakeHash(1),
|
|
blk_justified_checkpoint: Checkpoint(root: fakeHash(1), epoch: Epoch(1)),
|
|
blk_finalized_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0))
|
|
)
|
|
result.ops.add Operation(
|
|
kind: ProcessBlock,
|
|
root: fakeHash(3),
|
|
parent_root: fakeHash(2),
|
|
blk_justified_checkpoint: Checkpoint(root: fakeHash(2), epoch: Epoch(2)),
|
|
blk_finalized_checkpoint: Checkpoint(root: fakeHash(1), epoch: Epoch(1))
|
|
)
|
|
|
|
# Ensure that with justified epoch 0 we find 3
|
|
#
|
|
# 0 <- start
|
|
# |
|
|
# 1
|
|
# |
|
|
# 2
|
|
# |
|
|
# 3 <- head
|
|
result.ops.add Operation(
|
|
kind: FindHead,
|
|
justified_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
finalized_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
justified_state_balances: balances,
|
|
expected_head: fakeHash(3)
|
|
)
|
|
|
|
# Ensure that with justified epoch 1 we find 2
|
|
#
|
|
# 0
|
|
# |
|
|
# 1
|
|
# |
|
|
# 2 <- start
|
|
# |
|
|
# 3 <- head
|
|
result.ops.add Operation(
|
|
kind: FindHead,
|
|
justified_checkpoint: Checkpoint(root: fakeHash(1), epoch: Epoch(1)),
|
|
finalized_checkpoint: Checkpoint(root: GenesisRoot, epoch: Epoch(0)),
|
|
justified_state_balances: balances,
|
|
expected_head: fakeHash(2)
|
|
)
|
|
|
|
# Ensure that with justified epoch 2 we find 3
|
|
#
|
|
# 0
|
|
# |
|
|
# 1
|
|
# |
|
|
# 2
|
|
# |
|
|
# 3 <- start + head
|
|
result.ops.add Operation(
|
|
kind: FindHead,
|
|
justified_checkpoint: Checkpoint(root: fakeHash(2), epoch: Epoch(2)),
|
|
finalized_checkpoint: Checkpoint(root: fakeHash(1), epoch: Epoch(1)),
|
|
justified_state_balances: balances,
|
|
expected_head: fakeHash(3)
|
|
)
|
|
|
|
proc test_ffg01() =
|
|
test "fork_choice - testing finality #01":
|
|
# for i in 0 ..< 4:
|
|
# echo " block (", i, ") hash: ", fakeHash(i)
|
|
# echo " ------------------------------------------------------"
|
|
|
|
var (ctx, ops) = setup_finality_01()
|
|
ctx.run(ops)
|
|
|
|
test_ffg01()
|