128 lines
4.2 KiB
Rust
128 lines
4.2 KiB
Rust
#![cfg(not(debug_assertions))]
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#[macro_use]
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extern crate lazy_static;
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use beacon_chain::{
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test_utils::{AttestationStrategy, BeaconChainHarness, BlockStrategy},
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StateSkipConfig,
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};
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use tree_hash::TreeHash;
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use types::{AggregateSignature, EthSpec, Keypair, MainnetEthSpec, RelativeEpoch, Slot};
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pub const VALIDATOR_COUNT: usize = 16;
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lazy_static! {
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/// A cached set of keys.
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static ref KEYPAIRS: Vec<Keypair> = types::test_utils::generate_deterministic_keypairs(VALIDATOR_COUNT);
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}
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/// This test builds a chain that is just long enough to finalize an epoch then it produces an
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/// attestation at each slot from genesis through to three epochs past the head.
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///
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/// It checks the produced attestation against some locally computed values.
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#[test]
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fn produces_attestations() {
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let num_blocks_produced = MainnetEthSpec::slots_per_epoch() * 4;
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let harness = BeaconChainHarness::new(MainnetEthSpec, KEYPAIRS[..].to_vec());
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// Skip past the genesis slot.
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harness.advance_slot();
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harness.extend_chain(
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num_blocks_produced as usize,
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BlockStrategy::OnCanonicalHead,
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AttestationStrategy::AllValidators,
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);
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let chain = &harness.chain;
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let state = &harness.chain.head().expect("should get head").beacon_state;
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assert_eq!(state.slot, num_blocks_produced, "head should have updated");
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assert!(
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state.finalized_checkpoint.epoch > 0,
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"head should have updated"
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);
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let current_slot = chain.slot().expect("should get slot");
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// Test all valid committee indices for all slots in the chain.
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for slot in 0..=current_slot.as_u64() + MainnetEthSpec::slots_per_epoch() * 3 {
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let slot = Slot::from(slot);
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let state = chain
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.state_at_slot(slot, StateSkipConfig::WithStateRoots)
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.expect("should get state");
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let block_slot = if slot > current_slot {
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current_slot
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} else {
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slot
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};
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let block = chain
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.block_at_slot(block_slot)
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.expect("should get block")
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.expect("block should not be skipped");
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let block_root = block.message.tree_hash_root();
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let epoch_boundary_slot = state
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.current_epoch()
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.start_slot(MainnetEthSpec::slots_per_epoch());
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let target_root = if state.slot == epoch_boundary_slot {
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block_root
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} else {
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*state
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.get_block_root(epoch_boundary_slot)
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.expect("should get target block root")
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};
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let committee_cache = state
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.committee_cache(RelativeEpoch::Current)
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.expect("should get committee_cache");
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let committee_count = committee_cache.committees_per_slot();
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for index in 0..committee_count {
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let committee_len = committee_cache
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.get_beacon_committee(slot, index)
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.expect("should get committee for slot")
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.committee
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.len();
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let attestation = chain
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.produce_attestation(slot, index)
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.expect("should produce attestation");
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let data = &attestation.data;
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assert_eq!(
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attestation.aggregation_bits.len(),
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committee_len,
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"bad committee len"
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);
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assert!(
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attestation.aggregation_bits.is_zero(),
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"some committee bits are set"
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);
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assert_eq!(
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attestation.signature,
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AggregateSignature::new(),
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"bad signature"
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);
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assert_eq!(data.index, index, "bad index");
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assert_eq!(data.slot, slot, "bad slot");
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assert_eq!(data.beacon_block_root, block_root, "bad block root");
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assert_eq!(
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data.source, state.current_justified_checkpoint,
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"bad source"
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);
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assert_eq!(
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data.source, state.current_justified_checkpoint,
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"bad source"
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);
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assert_eq!(data.target.epoch, state.current_epoch(), "bad target epoch");
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assert_eq!(data.target.root, target_root, "bad target root");
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}
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}
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}
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