134 lines
4.4 KiB
Nim
134 lines
4.4 KiB
Nim
# beacon_chain
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# Copyright (c) 2018 Status Research & Development GmbH
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# Licensed and distributed under either of
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# * MIT license (license terms in the root directory or at http://opensource.org/licenses/MIT).
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# * Apache v2 license (license terms in the root directory or at http://www.apache.org/licenses/LICENSE-2.0).
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# at your option. This file may not be copied, modified, or distributed except according to those terms.
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import
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options, sequtils, unittest,
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./testutil,
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../beacon_chain/spec/[beaconstate, crypto, datatypes, digest, helpers],
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../beacon_chain/[extras, state_transition, ssz]
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suite "Block processing":
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## For now just test that we can compile and execute block processing with
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## mock data.
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let
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# Genesis state with minimal number of deposits
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# TODO bls verification is a bit of a bottleneck here
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genesisState = get_initial_beacon_state(
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makeInitialDeposits(), 0, Eth2Digest(), {})
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genesisBlock = makeGenesisBlock(genesisState)
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test "Passes from genesis state, no block":
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var
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state = genesisState
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proposer_index = getNextBeaconProposerIndex(state)
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previous_block_root = hash_tree_root_final(genesisBlock)
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let block_ok =
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updateState(state, previous_block_root, none(BeaconBlock), {})
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check:
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block_ok
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state.slot == genesisState.slot + 1
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# When proposer skips their proposal, randao layer is still peeled!
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state.validator_registry[proposer_index].randao_layers ==
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genesisState.validator_registry[proposer_index].randao_layers + 1
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test "Passes from genesis state, empty block":
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var
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state = genesisState
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proposer_index = getNextBeaconProposerIndex(state)
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previous_block_root = hash_tree_root_final(genesisBlock)
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new_block = makeBlock(state, previous_block_root, BeaconBlockBody())
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let block_ok = updateState(
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state, previous_block_root, some(new_block), {})
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check:
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block_ok
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state.slot == genesisState.slot + 1
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# Proposer proposed, no need for additional peeling
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state.validator_registry[proposer_index].randao_layers ==
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genesisState.validator_registry[proposer_index].randao_layers
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test "Passes through epoch update, no block":
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var
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state = genesisState
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previous_block_root = hash_tree_root_final(genesisBlock)
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for i in 1..EPOCH_LENGTH.int:
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let block_ok = updateState(
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state, previous_block_root, none(BeaconBlock), {})
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check:
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block_ok
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check:
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state.slot == genesisState.slot + EPOCH_LENGTH
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test "Passes through epoch update, empty block":
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var
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state = genesisState
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previous_block_root = hash_tree_root_final(genesisBlock)
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for i in 1..EPOCH_LENGTH.int:
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var new_block = makeBlock(state, previous_block_root, BeaconBlockBody())
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let block_ok = updateState(
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state, previous_block_root, some(new_block), {})
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check:
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block_ok
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previous_block_root = hash_tree_root_final(new_block)
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check:
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state.slot == genesisState.slot + EPOCH_LENGTH
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test "Attestation gets processed at epoch":
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var
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state = genesisState
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previous_block_root = hash_tree_root_final(genesisBlock)
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# Slot 0 is a finalized slot - won't be making attestations for it..
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discard updateState(
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state, previous_block_root, none(BeaconBlock), {})
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let
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# Create an attestation for slot 1 signed by the only attester we have!
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attestation = makeAttestation(
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state, previous_block_root,
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state.shard_committees_at_slots[state.slot][0].committee[0])
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# Some time needs to pass before attestations are included - this is
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# to let the attestation propagate properly to interested participants
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while state.slot < MIN_ATTESTATION_INCLUSION_DELAY + 1:
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discard updateState(
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state, previous_block_root, none(BeaconBlock), {})
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let
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new_block = makeBlock(state, previous_block_root, BeaconBlockBody(
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attestations: @[attestation]
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))
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discard updateState(state, previous_block_root, some(new_block), {})
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check:
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state.latest_attestations.len == 1
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# TODO Can't run more than 127 for now:
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# https://github.com/ethereum/eth2.0-specs/issues/352
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while state.slot < 127:
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discard updateState(
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state, previous_block_root, none(BeaconBlock), {})
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# Would need to process more epochs for the attestation to be removed from
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# the state! (per above bug)
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#
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# check:
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# state.latest_attestations.len == 0
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