mock.rs

// This file is part of Substrate.

// Copyright (C) Parity Technologies (UK) Ltd.
// SPDX-License-Identifier: Apache-2.0

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// 	http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

//! Mock file for session benchmarking.

#![cfg(test)]

use frame_election_provider_support::{
	bounds::{ElectionBounds, ElectionBoundsBuilder},
	onchain, SequentialPhragmen,
};
use frame_support::{
	derive_impl, parameter_types,
	traits::{ConstU32, ConstU64},
};
use sp_runtime::{traits::IdentityLookup, BuildStorage};

type AccountId = u64;
type Nonce = u32;
type Balance = u64;

type Block = frame_system::mocking::MockBlock<Test>;

frame_support::construct_runtime!(
	pub enum Test
	{
		System: frame_system,
		Balances: pallet_balances,
		Staking: pallet_staking,
		Session: pallet_session,
	}
);

#[derive_impl(frame_system::config_preludes::TestDefaultConfig)]
impl frame_system::Config for Test {
	type Nonce = Nonce;
	type AccountId = AccountId;
	type Lookup = IdentityLookup<Self::AccountId>;
	type Block = Block;
	type AccountData = pallet_balances::AccountData<u64>;
}

#[derive_impl(pallet_balances::config_preludes::TestDefaultConfig)]
impl pallet_balances::Config for Test {
	type ExistentialDeposit = ConstU64<10>;
	type AccountStore = System;
}

impl pallet_timestamp::Config for Test {
	type Moment = u64;
	type OnTimestampSet = ();
	type MinimumPeriod = ConstU64<5>;
	type WeightInfo = ();
}
impl pallet_session::historical::Config for Test {
	type FullIdentification = pallet_staking::Exposure<AccountId, Balance>;
	type FullIdentificationOf = pallet_staking::ExposureOf<Test>;
}

sp_runtime::impl_opaque_keys! {
	pub struct SessionKeys {
		pub foo: sp_runtime::testing::UintAuthorityId,
	}
}

pub struct TestSessionHandler;
impl pallet_session::SessionHandler<AccountId> for TestSessionHandler {
	const KEY_TYPE_IDS: &'static [sp_runtime::KeyTypeId] = &[];

	fn on_genesis_session<Ks: sp_runtime::traits::OpaqueKeys>(_validators: &[(AccountId, Ks)]) {}

	fn on_new_session<Ks: sp_runtime::traits::OpaqueKeys>(
		_: bool,
		_: &[(AccountId, Ks)],
		_: &[(AccountId, Ks)],
	) {
	}

	fn on_disabled(_: u32) {}
}

impl pallet_session::Config for Test {
	type SessionManager = pallet_session::historical::NoteHistoricalRoot<Test, Staking>;
	type Keys = SessionKeys;
	type ShouldEndSession = pallet_session::PeriodicSessions<(), ()>;
	type NextSessionRotation = pallet_session::PeriodicSessions<(), ()>;
	type SessionHandler = TestSessionHandler;
	type RuntimeEvent = RuntimeEvent;
	type ValidatorId = AccountId;
	type ValidatorIdOf = pallet_staking::StashOf<Test>;
	type WeightInfo = ();
}
pallet_staking_reward_curve::build! {
	const I_NPOS: sp_runtime::curve::PiecewiseLinear<'static> = curve!(
		min_inflation: 0_025_000,
		max_inflation: 0_100_000,
		ideal_stake: 0_500_000,
		falloff: 0_050_000,
		max_piece_count: 40,
		test_precision: 0_005_000,
	);
}
parameter_types! {
	pub const RewardCurve: &'static sp_runtime::curve::PiecewiseLinear<'static> = &I_NPOS;
	pub static ElectionsBounds: ElectionBounds = ElectionBoundsBuilder::default().build();
}

pub struct OnChainSeqPhragmen;
impl onchain::Config for OnChainSeqPhragmen {
	type System = Test;
	type Solver = SequentialPhragmen<AccountId, sp_runtime::Perbill>;
	type DataProvider = Staking;
	type WeightInfo = ();
	type MaxWinners = ConstU32<100>;
	type Bounds = ElectionsBounds;
}

#[derive_impl(pallet_staking::config_preludes::TestDefaultConfig)]
impl pallet_staking::Config for Test {
	type Currency = Balances;
	type CurrencyBalance = <Self as pallet_balances::Config>::Balance;
	type UnixTime = pallet_timestamp::Pallet<Self>;
	type AdminOrigin = frame_system::EnsureRoot<Self::AccountId>;
	type SessionInterface = Self;
	type EraPayout = pallet_staking::ConvertCurve<RewardCurve>;
	type NextNewSession = Session;
	type ElectionProvider = onchain::OnChainExecution<OnChainSeqPhragmen>;
	type GenesisElectionProvider = Self::ElectionProvider;
	type VoterList = pallet_staking::UseNominatorsAndValidatorsMap<Self>;
	type TargetList = pallet_staking::UseValidatorsMap<Self>;
}

impl crate::Config for Test {}

pub fn new_test_ext() -> sp_io::TestExternalities {
	let t = frame_system::GenesisConfig::<Test>::default().build_storage().unwrap();
	sp_io::TestExternalities::new(t)
}