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solana
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expose stake directly from bank (#4281)

This commit is contained in:
Rob Walker 2019-05-14 13:35:14 -07:00 committed by GitHub
parent 0f498e6265
commit 216e9a61a0
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3 changed files with 91 additions and 97 deletions
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34
core/src/locktower.rs
View File

@ -54,13 +54,13 @@ impl EpochStakes {
&Pubkey::default(), &Pubkey::default(),
) )
} }
pub fn new_from_stake_accounts(epoch: u64, accounts: &[(Pubkey, Account)]) -> Self { pub fn new_from_stakes(epoch: u64, accounts: &[(Pubkey, (u64, Account))]) -> Self {
let stakes = accounts.iter().map(|(k, v)| (*k, v.lamports)).collect(); let stakes = accounts.iter().map(|(k, (v, _))| (*k, *v)).collect();
Self::new(epoch, stakes, &accounts[0].0) Self::new(epoch, stakes, &accounts[0].0)
} }
pub fn new_from_bank(bank: &Bank, my_id: &Pubkey) -> Self { pub fn new_from_bank(bank: &Bank, my_id: &Pubkey) -> Self {
let bank_epoch = bank.get_epoch_and_slot_index(bank.slot()).0; let bank_epoch = bank.get_epoch_and_slot_index(bank.slot()).0;
let stakes = staking_utils::vote_account_balances_at_epoch(bank, bank_epoch) let stakes = staking_utils::vote_account_stakes_at_epoch(bank, bank_epoch)
.expect("voting require a bank with stakes"); .expect("voting require a bank with stakes");
Self::new(bank_epoch, stakes, my_id) Self::new(bank_epoch, stakes, my_id)
} }
@ -105,10 +105,10 @@ impl Locktower {
ancestors: &HashMap<u64, HashSet<u64>>, ancestors: &HashMap<u64, HashSet<u64>>,
) -> HashMap<u64, StakeLockout> ) -> HashMap<u64, StakeLockout>
where where
F: Iterator<Item = (Pubkey, Account)>, F: Iterator<Item = (Pubkey, (u64, Account))>,
{ {
let mut stake_lockouts = HashMap::new(); let mut stake_lockouts = HashMap::new();
for (key, account) in vote_accounts { for (key, (_, account)) in vote_accounts {
let lamports: u64 = *self.epoch_stakes.stakes.get(&key).unwrap_or(&0); let lamports: u64 = *self.epoch_stakes.stakes.get(&key).unwrap_or(&0);
if lamports == 0 { if lamports == 0 {
continue; continue;
@ -361,7 +361,7 @@ impl Locktower {
fn initialize_lockouts_from_bank(bank: &Bank, current_epoch: u64) -> VoteState { fn initialize_lockouts_from_bank(bank: &Bank, current_epoch: u64) -> VoteState {
let mut lockouts = VoteState::default(); let mut lockouts = VoteState::default();
if let Some(iter) = staking_utils::node_staked_accounts_at_epoch(&bank, current_epoch) { if let Some(iter) = staking_utils::node_staked_accounts_at_epoch(&bank, current_epoch) {
for (delegate_id, _, account) in iter { for (delegate_id, (_, account)) in iter {
if *delegate_id == bank.collector_id() { if *delegate_id == bank.collector_id() {
let state = VoteState::deserialize(&account.data).expect("votes"); let state = VoteState::deserialize(&account.data).expect("votes");
if lockouts.votes.len() < state.votes.len() { if lockouts.votes.len() < state.votes.len() {
@ -378,8 +378,8 @@ impl Locktower {
mod test { mod test {
use super::*; use super::*;
fn gen_accounts(stake_votes: &[(u64, &[u64])]) -> Vec<(Pubkey, Account)> { fn gen_stakes(stake_votes: &[(u64, &[u64])]) -> Vec<(Pubkey, (u64, Account))> {
let mut accounts = vec![]; let mut stakes = vec![];
for (lamports, votes) in stake_votes { for (lamports, votes) in stake_votes {
let mut account = Account::default(); let mut account = Account::default();
account.data = vec![0; 1024]; account.data = vec![0; 1024];
@ -391,14 +391,14 @@ mod test {
vote_state vote_state
.serialize(&mut account.data) .serialize(&mut account.data)
.expect("serialize state"); .expect("serialize state");
accounts.push((Pubkey::new_rand(), account)); stakes.push((Pubkey::new_rand(), (*lamports, account)));
} }
accounts stakes
} }
#[test] #[test]
fn test_collect_vote_lockouts_no_epoch_stakes() { fn test_collect_vote_lockouts_no_epoch_stakes() {
let accounts = gen_accounts(&[(1, &[0])]); let accounts = gen_stakes(&[(1, &[0])]);
let epoch_stakes = EpochStakes::new_for_tests(2); let epoch_stakes = EpochStakes::new_for_tests(2);
let locktower = Locktower::new(epoch_stakes, 0, 0.67); let locktower = Locktower::new(epoch_stakes, 0, 0.67);
let ancestors = vec![(1, vec![0].into_iter().collect()), (0, HashSet::new())] let ancestors = vec![(1, vec![0].into_iter().collect()), (0, HashSet::new())]
@ -411,8 +411,8 @@ mod test {
#[test] #[test]
fn test_collect_vote_lockouts_sums() { fn test_collect_vote_lockouts_sums() {
//two accounts voting for slot 0 with 1 token staked //two accounts voting for slot 0 with 1 token staked
let accounts = gen_accounts(&[(1, &[0]), (1, &[0])]); let accounts = gen_stakes(&[(1, &[0]), (1, &[0])]);
let epoch_stakes = EpochStakes::new_from_stake_accounts(0, &accounts); let epoch_stakes = EpochStakes::new_from_stakes(0, &accounts);
let locktower = Locktower::new(epoch_stakes, 0, 0.67); let locktower = Locktower::new(epoch_stakes, 0, 0.67);
let ancestors = vec![(1, vec![0].into_iter().collect()), (0, HashSet::new())] let ancestors = vec![(1, vec![0].into_iter().collect()), (0, HashSet::new())]
.into_iter() .into_iter()
@ -426,8 +426,8 @@ mod test {
fn test_collect_vote_lockouts_root() { fn test_collect_vote_lockouts_root() {
let votes: Vec<u64> = (0..MAX_LOCKOUT_HISTORY as u64).into_iter().collect(); let votes: Vec<u64> = (0..MAX_LOCKOUT_HISTORY as u64).into_iter().collect();
//two accounts voting for slot 0 with 1 token staked //two accounts voting for slot 0 with 1 token staked
let accounts = gen_accounts(&[(1, &votes), (1, &votes)]); let accounts = gen_stakes(&[(1, &votes), (1, &votes)]);
let epoch_stakes = EpochStakes::new_from_stake_accounts(0, &accounts); let epoch_stakes = EpochStakes::new_from_stakes(0, &accounts);
let mut locktower = Locktower::new(epoch_stakes, 0, 0.67); let mut locktower = Locktower::new(epoch_stakes, 0, 0.67);
let mut ancestors = HashMap::new(); let mut ancestors = HashMap::new();
for i in 0..(MAX_LOCKOUT_HISTORY + 1) { for i in 0..(MAX_LOCKOUT_HISTORY + 1) {
@ -754,13 +754,13 @@ mod test {
let threshold_size = 0.67; let threshold_size = 0.67;
let threshold_stake = (f64::ceil(total_stake as f64 * threshold_size)) as u64; let threshold_stake = (f64::ceil(total_stake as f64 * threshold_size)) as u64;
let locktower_votes: Vec<u64> = (0..VOTE_THRESHOLD_DEPTH as u64).collect(); let locktower_votes: Vec<u64> = (0..VOTE_THRESHOLD_DEPTH as u64).collect();
let accounts = gen_accounts(&[ let accounts = gen_stakes(&[
(threshold_stake, &[(VOTE_THRESHOLD_DEPTH - 2) as u64]), (threshold_stake, &[(VOTE_THRESHOLD_DEPTH - 2) as u64]),
(total_stake - threshold_stake, &locktower_votes[..]), (total_stake - threshold_stake, &locktower_votes[..]),
]); ]);
// Initialize locktower // Initialize locktower
let stakes: HashMap<_, _> = accounts.iter().map(|(pk, a)| (*pk, a.lamports)).collect(); let stakes: HashMap<_, _> = accounts.iter().map(|(pk, (s, _))| (*pk, *s)).collect();
let epoch_stakes = EpochStakes::new(0, stakes, &Pubkey::default()); let epoch_stakes = EpochStakes::new(0, stakes, &Pubkey::default());
let mut locktower = Locktower::new(epoch_stakes, VOTE_THRESHOLD_DEPTH, threshold_size); let mut locktower = Locktower::new(epoch_stakes, VOTE_THRESHOLD_DEPTH, threshold_size);

36
core/src/staking_utils.rs
View File

@ -17,10 +17,10 @@ pub fn get_supermajority_slot(bank: &Bank, epoch_height: u64) -> Option<u64> {
find_supermajority_slot(supermajority_stake, stakes_and_lockouts.iter()) find_supermajority_slot(supermajority_stake, stakes_and_lockouts.iter())
} }
pub fn vote_account_balances(bank: &Bank) -> HashMap<Pubkey, u64> { pub fn vote_account_stakes(bank: &Bank) -> HashMap<Pubkey, u64> {
let node_staked_accounts = node_staked_accounts(bank); let node_staked_accounts = node_staked_accounts(bank);
node_staked_accounts node_staked_accounts
.map(|(id, stake, _)| (id, stake)) .map(|(id, (stake, _))| (id, stake))
.collect() .collect()
} }
@ -34,12 +34,13 @@ pub fn delegated_stakes(bank: &Bank) -> HashMap<Pubkey, u64> {
/// At the specified epoch, collect the node account balance and vote states for nodes that /// At the specified epoch, collect the node account balance and vote states for nodes that
/// have non-zero balance in their corresponding staking accounts /// have non-zero balance in their corresponding staking accounts
pub fn vote_account_balances_at_epoch( pub fn vote_account_stakes_at_epoch(
bank: &Bank, bank: &Bank,
epoch_height: u64, epoch_height: u64,
) -> Option<HashMap<Pubkey, u64>> { ) -> Option<HashMap<Pubkey, u64>> {
let node_staked_accounts = node_staked_accounts_at_epoch(bank, epoch_height); let node_staked_accounts = node_staked_accounts_at_epoch(bank, epoch_height);
node_staked_accounts.map(|epoch_state| epoch_state.map(|(id, stake, _)| (*id, stake)).collect()) node_staked_accounts
.map(|epoch_state| epoch_state.map(|(id, (stake, _))| (*id, *stake)).collect())
} }
/// At the specified epoch, collect the delegate account balance and vote states for delegates /// At the specified epoch, collect the delegate account balance and vote states for delegates
@ -52,21 +53,18 @@ pub fn delegated_stakes_at_epoch(bank: &Bank, epoch_height: u64) -> Option<HashM
/// Collect the node account balance and vote states for nodes have non-zero balance in /// Collect the node account balance and vote states for nodes have non-zero balance in
/// their corresponding staking accounts /// their corresponding staking accounts
fn node_staked_accounts(bank: &Bank) -> impl Iterator<Item = (Pubkey, u64, Account)> { fn node_staked_accounts(bank: &Bank) -> impl Iterator<Item = (Pubkey, (u64, Account))> {
bank.vote_accounts() bank.vote_accounts().into_iter()
.into_iter()
.map(|(account_id, account)| (account_id, Bank::read_balance(&account), account))
} }
pub fn node_staked_accounts_at_epoch( pub fn node_staked_accounts_at_epoch(
bank: &Bank, bank: &Bank,
epoch_height: u64, epoch_height: u64,
) -> Option<impl Iterator<Item = (&Pubkey, u64, &Account)>> { ) -> Option<impl Iterator<Item = (&Pubkey, &(u64, Account))>> {
bank.epoch_vote_accounts(epoch_height).map(|vote_accounts| { bank.epoch_vote_accounts(epoch_height).map(|vote_accounts| {
vote_accounts vote_accounts
.into_iter() .into_iter()
.filter(|(account_id, account)| filter_no_delegate(account_id, account)) .filter(|(account_id, (_, account))| filter_no_delegate(account_id, account))
.map(|(account_id, account)| (account_id, Bank::read_balance(&account), account))
}) })
} }
@ -77,12 +75,12 @@ fn filter_no_delegate(account_id: &Pubkey, account: &Account) -> bool {
} }
fn to_vote_state( fn to_vote_state(
node_staked_accounts: impl Iterator<Item = (impl Borrow<Pubkey>, u64, impl Borrow<Account>)>, node_staked_accounts: impl Iterator<Item = (impl Borrow<Pubkey>, impl Borrow<(u64, Account)>)>,
) -> impl Iterator<Item = (u64, VoteState)> { ) -> impl Iterator<Item = (u64, VoteState)> {
node_staked_accounts.filter_map(|(_, stake, account)| { node_staked_accounts.filter_map(|(_, stake_account)| {
VoteState::deserialize(&account.borrow().data) VoteState::deserialize(&stake_account.borrow().1.data)
.ok() .ok()
.map(|vote_state| (stake, vote_state)) .map(|vote_state| (stake_account.borrow().0, vote_state))
}) })
} }
@ -158,17 +156,17 @@ pub mod tests {
// Epoch doesn't exist // Epoch doesn't exist
let mut expected = HashMap::new(); let mut expected = HashMap::new();
assert_eq!(vote_account_balances_at_epoch(&bank, 10), None); assert_eq!(vote_account_stakes_at_epoch(&bank, 10), None);
// First epoch has the bootstrap leader // First epoch has the bootstrap leader
expected.insert(voting_keypair.pubkey(), BOOTSTRAP_LEADER_LAMPORTS); expected.insert(voting_keypair.pubkey(), BOOTSTRAP_LEADER_LAMPORTS);
let expected = Some(expected); let expected = Some(expected);
assert_eq!(vote_account_balances_at_epoch(&bank, 0), expected); assert_eq!(vote_account_stakes_at_epoch(&bank, 0), expected);
// Second epoch carries same information // Second epoch carries same information
let bank = new_from_parent(&Arc::new(bank), 1); let bank = new_from_parent(&Arc::new(bank), 1);
assert_eq!(vote_account_balances_at_epoch(&bank, 0), expected); assert_eq!(vote_account_stakes_at_epoch(&bank, 0), expected);
assert_eq!(vote_account_balances_at_epoch(&bank, 1), expected); assert_eq!(vote_account_stakes_at_epoch(&bank, 1), expected);
} }
#[test] #[test]

118
runtime/src/bank.rs
View File

@ -33,13 +33,36 @@ use std::time::Instant;
/// cache of staking information /// cache of staking information
#[derive(Default, Clone)] #[derive(Default, Clone)]
pub struct Stakes { pub struct Stakes {
/// stakes /// vote accounts
vote_accounts: HashMap<Pubkey, Account>, pub vote_accounts: HashMap<Pubkey, (u64, Account)>,
/// stake_accounts /// stake_accounts
stake_accounts: HashMap<Pubkey, Account>, stake_accounts: HashMap<Pubkey, Account>,
} }
impl Stakes {
pub fn is_stake(account: &Account) -> bool {
solana_vote_api::check_id(&account.owner) || solana_stake_api::check_id(&account.owner)
}
pub fn update(&mut self, pubkey: &Pubkey, account: &Account) {
if solana_vote_api::check_id(&account.owner) {
if account.lamports != 0 {
self.vote_accounts
.insert(*pubkey, (account.lamports, account.clone()));
} else {
self.vote_accounts.remove(pubkey);
}
} else if solana_stake_api::check_id(&account.owner) {
if account.lamports != 0 {
self.stake_accounts.insert(*pubkey, account.clone());
} else {
self.stake_accounts.remove(pubkey);
}
}
}
}
type BankStatusCache = StatusCache<Result<()>>; type BankStatusCache = StatusCache<Result<()>>;
/// Manager for the state of all accounts and programs after processing its entries. /// Manager for the state of all accounts and programs after processing its entries.
@ -126,9 +149,11 @@ impl Bank {
bank.process_genesis_block(genesis_block); bank.process_genesis_block(genesis_block);
// genesis needs stakes for all epochs up to the epoch implied by // genesis needs stakes for all epochs up to the epoch implied by
// slot = 0 and genesis configuration // slot = 0 and genesis configuration
let stakes = bank.stakes(); {
for i in 0..=bank.get_stakers_epoch(bank.slot) { let stakes = bank.stakes.read().unwrap();
bank.epoch_stakes.insert(i, stakes.clone()); for i in 0..=bank.get_stakers_epoch(bank.slot) {
bank.epoch_stakes.insert(i, stakes.clone());
}
} }
bank bank
} }
@ -146,7 +171,7 @@ impl Bank {
bank.transaction_count bank.transaction_count
.store(parent.transaction_count() as usize, Ordering::Relaxed); .store(parent.transaction_count() as usize, Ordering::Relaxed);
bank.stakes = RwLock::new(parent.stakes()); bank.stakes = RwLock::new(parent.stakes.read().unwrap().clone());
bank.tick_height bank.tick_height
.store(parent.tick_height.load(Ordering::SeqCst), Ordering::SeqCst); .store(parent.tick_height.load(Ordering::SeqCst), Ordering::SeqCst);
@ -175,7 +200,7 @@ impl Bank {
// if my parent didn't populate for this epoch, we've // if my parent didn't populate for this epoch, we've
// crossed a boundary // crossed a boundary
if epoch_stakes.get(&epoch).is_none() { if epoch_stakes.get(&epoch).is_none() {
epoch_stakes.insert(epoch, bank.stakes()); epoch_stakes.insert(epoch, bank.stakes.read().unwrap().clone());
} }
epoch_stakes epoch_stakes
}; };
@ -284,6 +309,10 @@ impl Bank {
"solana_bpf_loader", "solana_bpf_loader",
&solana_sdk::bpf_loader::id(), &solana_sdk::bpf_loader::id(),
); );
self.register_native_instruction_processor(
&solana_vote_program!().0,
&solana_vote_program!().1,
);
// Add additional native programs specified in the genesis block // Add additional native programs specified in the genesis block
for (name, program_id) in &genesis_block.native_instruction_processors { for (name, program_id) in &genesis_block.native_instruction_processors {
@ -772,33 +801,11 @@ impl Bank {
parents parents
} }
fn update_stakes_accounts(
accounts: &mut HashMap<Pubkey, Account>,
pubkey: &Pubkey,
account: &Account,
) {
if account.lamports != 0 {
accounts.insert(*pubkey, account.clone());
} else {
accounts.remove(pubkey);
}
}
fn store(&self, pubkey: &Pubkey, account: &Account) { fn store(&self, pubkey: &Pubkey, account: &Account) {
self.accounts.store_slow(self.slot(), pubkey, account); self.accounts.store_slow(self.slot(), pubkey, account);
if solana_vote_api::check_id(&account.owner) { if Stakes::is_stake(account) {
Self::update_stakes_accounts( self.stakes.write().unwrap().update(pubkey, account);
&mut self.stakes.write().unwrap().vote_accounts,
pubkey,
account,
);
} else if solana_stake_api::check_id(&account.owner) {
Self::update_stakes_accounts(
&mut self.stakes.write().unwrap().stake_accounts,
pubkey,
account,
);
} }
} }
@ -916,8 +923,6 @@ impl Bank {
res: &[Result<()>], res: &[Result<()>],
loaded: &[Result<(InstructionAccounts, InstructionLoaders)>], loaded: &[Result<(InstructionAccounts, InstructionLoaders)>],
) { ) {
let mut stakes = self.stakes.write().unwrap();
for (i, raccs) in loaded.iter().enumerate() { for (i, raccs) in loaded.iter().enumerate() {
if res[i].is_err() || raccs.is_err() { if res[i].is_err() || raccs.is_err() {
continue; continue;
@ -926,33 +931,24 @@ impl Bank {
let message = &txs[i].message(); let message = &txs[i].message();
let acc = raccs.as_ref().unwrap(); let acc = raccs.as_ref().unwrap();
for (pubkey, account) in message.account_keys.iter().zip(acc.0.iter()) { for (pubkey, account) in message
if solana_vote_api::check_id(&account.owner) { .account_keys
Self::update_stakes_accounts(&mut stakes.vote_accounts, pubkey, account); .iter()
} else if solana_stake_api::check_id(&account.owner) { .zip(acc.0.iter())
Self::update_stakes_accounts(&mut stakes.stake_accounts, pubkey, account); .filter(|(_, account)| Stakes::is_stake(account))
} {
self.stakes.write().unwrap().update(pubkey, account);
} }
} }
} }
/// current stakes for this bank
pub fn stakes(&self) -> Stakes {
self.stakes.read().unwrap().clone()
}
/// current vote accounts for this bank /// current vote accounts for this bank
pub fn vote_accounts(&self) -> HashMap<Pubkey, Account> { pub fn vote_accounts(&self) -> HashMap<Pubkey, (u64, Account)> {
self.stakes.read().unwrap().vote_accounts.clone() self.stakes.read().unwrap().vote_accounts.clone()
} }
/// stakes for the specific epoch /// vote accounts for the specific epoch
pub fn epoch_stakes(&self, epoch: u64) -> Option<&Stakes> { pub fn epoch_vote_accounts(&self, epoch: u64) -> Option<&HashMap<Pubkey, (u64, Account)>> {
self.epoch_stakes.get(&epoch)
}
/// vote accounts for the specific epoch
pub fn epoch_vote_accounts(&self, epoch: u64) -> Option<&HashMap<Pubkey, Account>> {
self.epoch_stakes self.epoch_stakes
.get(&epoch) .get(&epoch)
.map(|stakes| &stakes.vote_accounts) .map(|stakes| &stakes.vote_accounts)
@ -1583,13 +1579,13 @@ mod tests {
} }
#[test] #[test]
fn test_bank_epoch_stakes() { fn test_bank_epoch_vote_accounts() {
let leader_id = Pubkey::new_rand(); let leader_id = Pubkey::new_rand();
let leader_lamports = 3; let leader_lamports = 3;
let mut genesis_block = create_genesis_block_with_leader(5, &leader_id, leader_lamports).0; let mut genesis_block = create_genesis_block_with_leader(5, &leader_id, leader_lamports).0;
// set this up weird, forces future generation, odd mod(), etc. // set this up weird, forces future generation, odd mod(), etc.
// this says: "stakes for epoch X should be generated at slot index 3 in epoch X-2... // this says: "vote_accounts for epoch X should be generated at slot index 3 in epoch X-2...
const SLOTS_PER_EPOCH: u64 = MINIMUM_SLOT_LENGTH as u64; const SLOTS_PER_EPOCH: u64 = MINIMUM_SLOT_LENGTH as u64;
const STAKERS_SLOT_OFFSET: u64 = SLOTS_PER_EPOCH * 3 - 3; const STAKERS_SLOT_OFFSET: u64 = SLOTS_PER_EPOCH * 3 - 3;
genesis_block.slots_per_epoch = SLOTS_PER_EPOCH; genesis_block.slots_per_epoch = SLOTS_PER_EPOCH;
@ -1598,10 +1594,10 @@ mod tests {
let parent = Arc::new(Bank::new(&genesis_block)); let parent = Arc::new(Bank::new(&genesis_block));
let stakes0: Option<HashMap<_, _>> = parent.epoch_vote_accounts(0).map(|accounts| { let vote_accounts0: Option<HashMap<_, _>> = parent.epoch_vote_accounts(0).map(|accounts| {
accounts accounts
.iter() .iter()
.filter_map(|(pubkey, account)| { .filter_map(|(pubkey, (_, account))| {
if let Ok(vote_state) = VoteState::deserialize(&account.data) { if let Ok(vote_state) = VoteState::deserialize(&account.data) {
if vote_state.node_id == leader_id { if vote_state.node_id == leader_id {
Some((*pubkey, true)) Some((*pubkey, true))
@ -1614,15 +1610,15 @@ mod tests {
}) })
.collect() .collect()
}); });
assert!(stakes0.is_some()); assert!(vote_accounts0.is_some());
assert!(stakes0.iter().len() != 0); assert!(vote_accounts0.iter().len() != 0);
let mut i = 1; let mut i = 1;
loop { loop {
if i > STAKERS_SLOT_OFFSET / SLOTS_PER_EPOCH { if i > STAKERS_SLOT_OFFSET / SLOTS_PER_EPOCH {
break; break;
} }
assert!(parent.epoch_stakes(i).is_some()); assert!(parent.epoch_vote_accounts(i).is_some());
i += 1; i += 1;
} }
@ -1633,7 +1629,7 @@ mod tests {
SLOTS_PER_EPOCH - (STAKERS_SLOT_OFFSET % SLOTS_PER_EPOCH), SLOTS_PER_EPOCH - (STAKERS_SLOT_OFFSET % SLOTS_PER_EPOCH),
); );
assert!(child.epoch_stakes(i).is_some()); assert!(child.epoch_vote_accounts(i).is_some());
// child crosses epoch boundary but isn't the first slot in the epoch // child crosses epoch boundary but isn't the first slot in the epoch
let child = Bank::new_from_parent( let child = Bank::new_from_parent(
@ -1641,7 +1637,7 @@ mod tests {
&leader_id, &leader_id,
SLOTS_PER_EPOCH - (STAKERS_SLOT_OFFSET % SLOTS_PER_EPOCH) + 1, SLOTS_PER_EPOCH - (STAKERS_SLOT_OFFSET % SLOTS_PER_EPOCH) + 1,
); );
assert!(child.epoch_stakes(i).is_some()); assert!(child.epoch_vote_accounts(i).is_some());
} }
#[test] #[test]