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// Copyright 2019-2025 PureStake Inc.
// This file is part of Moonbeam.
// Moonbeam is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// Moonbeam is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with Moonbeam. If not, see <http://www.gnu.org/licenses/>.
//! Test utilities
use crate::{
self as pallet_parachain_staking, InflationDistributionAccount, InflationDistributionConfig,
};
pallet, AwardedPts, Config, Event as ParachainStakingEvent, InflationInfo, Points, Range,
COLLATOR_LOCK_ID, DELEGATOR_LOCK_ID,
use block_author::BlockAuthor as BlockAuthorMap;
use frame_support::{
construct_runtime, parameter_types,
traits::{Everything, Get, LockIdentifier, OnFinalize, OnInitialize},
weights::{constants::RocksDbWeight, Weight},
use frame_system::pallet_prelude::BlockNumberFor;
use sp_consensus_slots::Slot;
use sp_core::H256;
use sp_io;
use sp_runtime::BuildStorage;
use sp_runtime::{
traits::{BlakeTwo256, IdentityLookup},
Perbill, Percent,
pub type AccountId = u64;
pub type Balance = u128;
pub type BlockNumber = BlockNumberFor<Test>;
type Block = frame_system::mocking::MockBlockU32<Test>;
// Configure a mock runtime to test the pallet.
construct_runtime!(
pub enum Test
{
System: frame_system,
Balances: pallet_balances,
ParachainStaking: pallet_parachain_staking,
BlockAuthor: block_author,
}
);
parameter_types! {
pub const BlockHashCount: u32 = 250;
pub const MaximumBlockWeight: Weight = Weight::from_parts(1024, 1);
pub const MaximumBlockLength: u32 = 2 * 1024;
pub const AvailableBlockRatio: Perbill = Perbill::one();
pub const SS58Prefix: u8 = 42;
impl frame_system::Config for Test {
type BaseCallFilter = Everything;
type DbWeight = RocksDbWeight;
type RuntimeOrigin = RuntimeOrigin;
type RuntimeTask = RuntimeTask;
type Nonce = u64;
type Block = Block;
type RuntimeCall = RuntimeCall;
type Hash = H256;
type Hashing = BlakeTwo256;
type AccountId = AccountId;
type Lookup = IdentityLookup<Self::AccountId>;
type RuntimeEvent = RuntimeEvent;
type BlockHashCount = BlockHashCount;
type Version = ();
type PalletInfo = PalletInfo;
type AccountData = pallet_balances::AccountData<Balance>;
type OnNewAccount = ();
type OnKilledAccount = ();
type SystemWeightInfo = ();
type BlockWeights = ();
type BlockLength = ();
type SS58Prefix = SS58Prefix;
type OnSetCode = ();
type MaxConsumers = frame_support::traits::ConstU32<16>;
type SingleBlockMigrations = ();
type MultiBlockMigrator = ();
type PreInherents = ();
type PostInherents = ();
type PostTransactions = ();
type ExtensionsWeightInfo = ();
pub const ExistentialDeposit: u128 = 0;
impl pallet_balances::Config for Test {
type MaxReserves = ();
type ReserveIdentifier = [u8; 4];
type MaxLocks = ();
type Balance = Balance;
type DustRemoval = ();
type ExistentialDeposit = ExistentialDeposit;
type AccountStore = System;
type WeightInfo = ();
type RuntimeHoldReason = ();
type FreezeIdentifier = ();
type MaxFreezes = ();
type RuntimeFreezeReason = ();
type DoneSlashHandler = ();
impl block_author::Config for Test {}
const GENESIS_BLOCKS_PER_ROUND: BlockNumber = 5;
const GENESIS_COLLATOR_COMMISSION: Perbill = Perbill::from_percent(20);
const GENESIS_PARACHAIN_BOND_RESERVE_PERCENT: Percent = Percent::from_percent(30);
const GENESIS_NUM_SELECTED_CANDIDATES: u32 = 5;
pub const POINTS_PER_BLOCK: u32 = 20;
pub const POINTS_PER_ROUND: u32 = GENESIS_BLOCKS_PER_ROUND * POINTS_PER_BLOCK;
pub const MinBlocksPerRound: u32 = 3;
pub const MaxOfflineRounds: u32 = 2;
pub const LeaveCandidatesDelay: u32 = 2;
pub const CandidateBondLessDelay: u32 = 2;
pub const LeaveDelegatorsDelay: u32 = 2;
pub const RevokeDelegationDelay: u32 = 2;
pub const DelegationBondLessDelay: u32 = 2;
pub const RewardPaymentDelay: u32 = 2;
pub const MinSelectedCandidates: u32 = GENESIS_NUM_SELECTED_CANDIDATES;
pub const MaxTopDelegationsPerCandidate: u32 = 4;
pub const MaxBottomDelegationsPerCandidate: u32 = 4;
pub const MaxDelegationsPerDelegator: u32 = 4;
pub const MinCandidateStk: u128 = 10;
pub const MinDelegation: u128 = 3;
pub const MaxCandidates: u32 = 200;
pub struct StakingRoundSlotProvider;
impl Get<Slot> for StakingRoundSlotProvider {
fn get() -> Slot {
let block_number: u64 = System::block_number().into();
Slot::from(block_number)
pub const LinearInflationThreshold: Option<Balance> = Some(1_200_000_000);
impl Config for Test {
type Currency = Balances;
type MonetaryGovernanceOrigin = frame_system::EnsureRoot<AccountId>;
type MinBlocksPerRound = MinBlocksPerRound;
type MaxOfflineRounds = MaxOfflineRounds;
type LeaveCandidatesDelay = LeaveCandidatesDelay;
type CandidateBondLessDelay = CandidateBondLessDelay;
type LeaveDelegatorsDelay = LeaveDelegatorsDelay;
type RevokeDelegationDelay = RevokeDelegationDelay;
type DelegationBondLessDelay = DelegationBondLessDelay;
type RewardPaymentDelay = RewardPaymentDelay;
type MinSelectedCandidates = MinSelectedCandidates;
type MaxTopDelegationsPerCandidate = MaxTopDelegationsPerCandidate;
type MaxBottomDelegationsPerCandidate = MaxBottomDelegationsPerCandidate;
type MaxDelegationsPerDelegator = MaxDelegationsPerDelegator;
type MinCandidateStk = MinCandidateStk;
type MinDelegation = MinDelegation;
type BlockAuthor = BlockAuthor;
type OnCollatorPayout = ();
type PayoutCollatorReward = ();
type OnInactiveCollator = ();
type OnNewRound = ();
type SlotProvider = StakingRoundSlotProvider;
type MaxCandidates = MaxCandidates;
type SlotDuration = frame_support::traits::ConstU64<6_000>;
type BlockTime = frame_support::traits::ConstU64<6_000>;
type LinearInflationThreshold = LinearInflationThreshold;
pub(crate) struct ExtBuilder {
// endowed accounts with balances
balances: Vec<(AccountId, Balance)>,
// [collator, amount]
collators: Vec<(AccountId, Balance)>,
// [delegator, collator, delegation_amount, auto_compound_percent]
delegations: Vec<(AccountId, AccountId, Balance, Percent)>,
// inflation config
inflation: InflationInfo<Balance>,
impl Default for ExtBuilder {
fn default() -> ExtBuilder {
ExtBuilder {
balances: vec![],
delegations: vec![],
collators: vec![],
inflation: InflationInfo {
expect: Range {
min: 700,
ideal: 700,
max: 700,
},
// not used
annual: Range {
min: Perbill::from_percent(50),
ideal: Perbill::from_percent(50),
max: Perbill::from_percent(50),
// unrealistically high parameterization, only for testing
round: Range {
min: Perbill::from_percent(5),
ideal: Perbill::from_percent(5),
max: Perbill::from_percent(5),
impl ExtBuilder {
pub(crate) fn with_balances(mut self, balances: Vec<(AccountId, Balance)>) -> Self {
self.balances = balances;
self
pub(crate) fn with_candidates(mut self, collators: Vec<(AccountId, Balance)>) -> Self {
self.collators = collators;
pub(crate) fn with_delegations(
mut self,
delegations: Vec<(AccountId, AccountId, Balance)>,
) -> Self {
self.delegations = delegations
.into_iter()
.map(|d| (d.0, d.1, d.2, Percent::zero()))
.collect();
pub(crate) fn with_auto_compounding_delegations(
self.delegations = delegations;
#[allow(dead_code)]
pub(crate) fn with_inflation(mut self, inflation: InflationInfo<Balance>) -> Self {
self.inflation = inflation;
pub(crate) fn build(self) -> sp_io::TestExternalities {
let mut t = frame_system::GenesisConfig::<Test>::default()
.build_storage()
.expect("Frame system builds valid default genesis config");
pallet_balances::GenesisConfig::<Test> {
balances: self.balances,
.assimilate_storage(&mut t)
.expect("Pallet balances storage can be assimilated");
pallet_parachain_staking::GenesisConfig::<Test> {
candidates: self.collators,
delegations: self.delegations,
inflation_config: self.inflation,
collator_commission: GENESIS_COLLATOR_COMMISSION,
parachain_bond_reserve_percent: GENESIS_PARACHAIN_BOND_RESERVE_PERCENT,
blocks_per_round: GENESIS_BLOCKS_PER_ROUND,
num_selected_candidates: GENESIS_NUM_SELECTED_CANDIDATES,
.expect("Parachain Staking's storage can be assimilated");
let mut ext = sp_io::TestExternalities::new(t);
ext.execute_with(|| System::set_block_number(1));
ext
/// Rolls forward one block. Returns the new block number.
fn roll_one_block() -> BlockNumber {
ParachainStaking::on_finalize(System::block_number());
Balances::on_finalize(System::block_number());
System::on_finalize(System::block_number());
System::set_block_number(System::block_number() + 1);
System::reset_events();
System::on_initialize(System::block_number());
Balances::on_initialize(System::block_number());
ParachainStaking::on_initialize(System::block_number());
System::block_number()
/// Rolls to the desired block. Returns the number of blocks played.
pub(crate) fn roll_to(n: BlockNumber) -> BlockNumber {
let mut num_blocks = 0;
let mut block = System::block_number();
while block < n {
block = roll_one_block();
num_blocks += 1;
num_blocks
/// Rolls desired number of blocks. Returns the final block.
pub(crate) fn roll_blocks(num_blocks: u32) -> BlockNumber {
for _ in 0..num_blocks {
block
/// Rolls block-by-block to the beginning of the specified round.
/// This will complete the block in which the round change occurs.
/// Returns the number of blocks played.
pub(crate) fn roll_to_round_begin(round: BlockNumber) -> BlockNumber {
let r = ParachainStaking::round();
// Return 0 if target round has already passed
if round < r.current + 1 {
return 0;
// Calculate target block by adding round length for each round difference
let target = r.first + (round - r.current) * r.length;
roll_to(target)
/// Rolls block-by-block to the end of the specified round.
/// The block following will be the one in which the specified round change occurs.
pub(crate) fn roll_to_round_end(round: BlockNumber) -> BlockNumber {
if round < r.current {
let target = r.first + (round - r.current + 1) * r.length - 1;
pub(crate) fn inflation_configs(
pbr: AccountId,
pbr_percent: u8,
treasury: AccountId,
treasury_percent: u8,
) -> InflationDistributionConfig<AccountId> {
[
InflationDistributionAccount {
account: pbr,
percent: Percent::from_percent(pbr_percent),
account: treasury,
percent: Percent::from_percent(treasury_percent),
]
.into()
pub(crate) fn events() -> Vec<pallet::Event<Test>> {
System::events()
.map(|r| r.event)
.filter_map(|e| {
if let RuntimeEvent::ParachainStaking(inner) = e {
Some(inner)
} else {
None
})
.collect::<Vec<_>>()
/// Asserts that some events were never emitted.
///
/// # Example
/// ```
/// assert_no_events!();
#[macro_export]
macro_rules! assert_no_events {
() => {
similar_asserts::assert_eq!(Vec::<Event<Test>>::new(), crate::mock::events())
/// Asserts that emitted events match exactly the given input.
/// assert_events_eq!(
/// Foo { x: 1, y: 2 },
/// Bar { value: "test" },
/// Baz { a: 10, b: 20 },
/// );
macro_rules! assert_events_eq {
($event:expr) => {
similar_asserts::assert_eq!(vec![$event], crate::mock::events());
($($events:expr,)+) => {
similar_asserts::assert_eq!(vec![$($events,)+], crate::mock::events());
/// Asserts that some emitted events match the given input.
/// assert_events_emitted!(
macro_rules! assert_events_emitted {
[$event].into_iter().for_each(|e| assert!(
crate::mock::events().into_iter().find(|x| x == &e).is_some(),
"Event {:?} was not found in events: \n{:#?}",
e,
crate::mock::events()
));
[$($events,)+].into_iter().for_each(|e| assert!(
/// assert_events_not_emitted!(
macro_rules! assert_events_not_emitted {
crate::mock::events().into_iter().find(|x| x != &e).is_some(),
"Event {:?} was unexpectedly found in events: \n{:#?}",
/// Asserts that the emitted events are exactly equal to the input patterns.
/// assert_events_eq_match!(
/// Foo { x: 1, .. },
/// Bar { .. },
macro_rules! assert_events_eq_match {
($index:expr;) => {
assert_eq!(
$index,
crate::mock::events().len(),
"Found {} extra event(s): \n{:#?}",
crate::mock::events().len()-$index,
($index:expr; $event:pat_param, $($events:pat_param,)*) => {
assert!(
matches!(
crate::mock::events().get($index),
Some($event),
),
"Event {:#?} was not found at index {}: \n{:#?}",
stringify!($event),
assert_events_eq_match!($index+1; $($events,)*);
($event:pat_param) => {
assert_events_eq_match!(0; $event,);
($($events:pat_param,)+) => {
assert_events_eq_match!(0; $($events,)+);
/// Asserts that some emitted events match the input patterns.
/// assert_events_emitted_match!(
macro_rules! assert_events_emitted_match {
crate::mock::events().into_iter().any(|x| matches!(x, $event)),
($event:pat_param, $($events:pat_param,)+) => {
assert_events_emitted_match!($event);
$(
assert_events_emitted_match!($events);
)+
/// Asserts that the input patterns match none of the emitted events.
/// assert_events_not_emitted_match!(
macro_rules! assert_events_not_emitted_match {
crate::mock::events().into_iter().any(|x| !matches!(x, $event)),
assert_events_not_emitted_match!($event);
assert_events_not_emitted_match!($events);
// Same storage changes as ParachainStaking::on_finalize
pub(crate) fn set_author(round: BlockNumber, acc: u64, pts: u32) {
<Points<Test>>::mutate(round, |p| *p += pts);
<AwardedPts<Test>>::mutate(round, acc, |p| *p += pts);
// Allows to change the block author (default is always 0)
pub(crate) fn set_block_author(acc: u64) {
<BlockAuthorMap<Test>>::set(acc);
/// fn to query the lock amount
pub(crate) fn query_lock_amount(account_id: u64, id: LockIdentifier) -> Option<Balance> {
for lock in Balances::locks(&account_id) {
if lock.id == id {
return Some(lock.amount);
#[test]
fn geneses() {
ExtBuilder::default()
.with_balances(vec![
(1, 1000),
(2, 300),
(3, 100),
(4, 100),
(5, 100),
(6, 100),
(7, 100),
(8, 9),
(9, 4),
])
.with_candidates(vec![(1, 500), (2, 200)])
.with_delegations(vec![(3, 1, 100), (4, 1, 100), (5, 2, 100), (6, 2, 100)])
.build()
.execute_with(|| {
assert!(System::events().is_empty());
// collators
ParachainStaking::get_collator_stakable_free_balance(&1),
500
assert_eq!(query_lock_amount(1, COLLATOR_LOCK_ID), Some(500));
assert!(ParachainStaking::is_candidate(&1));
assert_eq!(query_lock_amount(2, COLLATOR_LOCK_ID), Some(200));
ParachainStaking::get_collator_stakable_free_balance(&2),
100
assert!(ParachainStaking::is_candidate(&2));
// delegators
for x in 3..7 {
assert!(ParachainStaking::is_delegator(&x));
assert_eq!(ParachainStaking::get_delegator_stakable_balance(&x), 0);
assert_eq!(query_lock_amount(x, DELEGATOR_LOCK_ID), Some(100));
// uninvolved
for x in 7..10 {
assert!(!ParachainStaking::is_delegator(&x));
// no delegator staking locks
assert_eq!(query_lock_amount(7, DELEGATOR_LOCK_ID), None);
assert_eq!(ParachainStaking::get_delegator_stakable_balance(&7), 100);
assert_eq!(query_lock_amount(8, DELEGATOR_LOCK_ID), None);
assert_eq!(ParachainStaking::get_delegator_stakable_balance(&8), 9);
assert_eq!(query_lock_amount(9, DELEGATOR_LOCK_ID), None);
assert_eq!(ParachainStaking::get_delegator_stakable_balance(&9), 4);
// no collator staking locks
ParachainStaking::get_collator_stakable_free_balance(&7),
assert_eq!(ParachainStaking::get_collator_stakable_free_balance(&8), 9);
assert_eq!(ParachainStaking::get_collator_stakable_free_balance(&9), 4);
});
(1, 100),
(2, 100),
(8, 100),
(9, 100),
(10, 100),
.with_candidates(vec![(1, 20), (2, 20), (3, 20), (4, 20), (5, 10)])
.with_delegations(vec![
(6, 1, 10),
(7, 1, 10),
(8, 2, 10),
(9, 2, 10),
(10, 1, 10),
for x in 1..5 {
assert!(ParachainStaking::is_candidate(&x));
assert_eq!(query_lock_amount(x, COLLATOR_LOCK_ID), Some(20));
assert_eq!(ParachainStaking::get_collator_stakable_free_balance(&x), 80);
assert!(ParachainStaking::is_candidate(&5));
assert_eq!(query_lock_amount(5, COLLATOR_LOCK_ID), Some(10));
assert_eq!(ParachainStaking::get_collator_stakable_free_balance(&5), 90);
for x in 6..11 {
assert_eq!(query_lock_amount(x, DELEGATOR_LOCK_ID), Some(10));
assert_eq!(ParachainStaking::get_delegator_stakable_balance(&x), 90);
#[frame_support::pallet]
pub mod block_author {
use super::*;
use frame_support::pallet_prelude::*;
use frame_support::traits::Get;
#[pallet::config]
pub trait Config: frame_system::Config {}
#[pallet::pallet]
pub struct Pallet<T>(_);
#[pallet::storage]
#[pallet::getter(fn block_author)]
pub(super) type BlockAuthor<T> = StorageValue<_, AccountId, ValueQuery>;
impl<T: Config> Get<AccountId> for Pallet<T> {
fn get() -> AccountId {
<BlockAuthor<T>>::get()
fn roll_to_round_begin_works() {
ExtBuilder::default().build().execute_with(|| {
// these tests assume blocks-per-round of 5, as established by GENESIS_BLOCKS_PER_ROUND
assert_eq!(System::block_number(), 1); // we start on block 1
let num_blocks = roll_to_round_begin(1);
assert_eq!(System::block_number(), 1); // no-op, we're already on this round
assert_eq!(num_blocks, 0);
let num_blocks = roll_to_round_begin(2);
assert_eq!(System::block_number(), 5);
assert_eq!(num_blocks, 4);
let num_blocks = roll_to_round_begin(3);
assert_eq!(System::block_number(), 10);
assert_eq!(num_blocks, 5);
fn roll_to_round_end_works() {
let num_blocks = roll_to_round_end(1);
assert_eq!(System::block_number(), 4);
assert_eq!(num_blocks, 3);
let num_blocks = roll_to_round_end(2);
assert_eq!(System::block_number(), 9);
let num_blocks = roll_to_round_end(3);
assert_eq!(System::block_number(), 14);
#[should_panic]
fn test_assert_events_eq_fails_if_event_missing() {
inject_test_events();
assert_events_eq!(
ParachainStakingEvent::CollatorChosen {
round: 2,
collator_account: 1,
total_exposed_amount: 10,
ParachainStakingEvent::NewRound {
starting_block: 10,
selected_collators_number: 1,
total_balance: 10,
fn test_assert_events_eq_fails_if_event_extra() {
ParachainStakingEvent::Rewarded {
account: 1,
rewards: 100,
rewards: 200,
fn test_assert_events_eq_fails_if_event_wrong_order() {
fn test_assert_events_eq_fails_if_event_wrong_value() {
rewards: 50,
fn test_assert_events_eq_passes_if_all_events_present_single() {
System::deposit_event(ParachainStakingEvent::Rewarded {
assert_events_eq!(ParachainStakingEvent::Rewarded {
fn test_assert_events_eq_passes_if_all_events_present_multiple() {
fn test_assert_events_emitted_fails_if_event_missing() {
assert_events_emitted!(ParachainStakingEvent::DelegatorExitScheduled {
delegator: 3,
scheduled_exit: 4,
fn test_assert_events_emitted_fails_if_event_wrong_value() {
assert_events_emitted!(ParachainStakingEvent::Rewarded {
fn test_assert_events_emitted_passes_if_all_events_present_single() {
fn test_assert_events_emitted_passes_if_all_events_present_multiple() {
assert_events_emitted!(
fn test_assert_events_eq_match_fails_if_event_missing() {
assert_events_eq_match!(
ParachainStakingEvent::CollatorChosen { .. },
ParachainStakingEvent::NewRound { .. },
fn test_assert_events_eq_match_fails_if_event_extra() {
ParachainStakingEvent::Rewarded { .. },
fn test_assert_events_eq_match_fails_if_event_wrong_order() {
fn test_assert_events_eq_match_fails_if_event_wrong_value() {
ParachainStakingEvent::Rewarded { rewards: 50, .. },
fn test_assert_events_eq_match_passes_if_all_events_present_single() {
assert_events_eq_match!(ParachainStakingEvent::Rewarded { account: 1, .. });
fn test_assert_events_eq_match_passes_if_all_events_present_multiple() {
..
fn test_assert_events_emitted_match_fails_if_event_missing() {
assert_events_emitted_match!(ParachainStakingEvent::DelegatorExitScheduled {
fn test_assert_events_emitted_match_fails_if_event_wrong_value() {
assert_events_emitted_match!(ParachainStakingEvent::Rewarded { rewards: 50, .. });
fn test_assert_events_emitted_match_passes_if_all_events_present_single() {
assert_events_emitted_match!(ParachainStakingEvent::Rewarded { rewards: 100, .. });
fn test_assert_events_emitted_match_passes_if_all_events_present_multiple() {
assert_events_emitted_match!(
fn inject_test_events() {
.for_each(System::deposit_event);