// This file is part of Substrate.

// Copyright (C) 2020-2022 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.

//! Tests for the benchmark macro for instantiable modules

#![cfg(test)]

use super::*;
use frame_support::traits::ConstU32;
use sp_runtime::{
	testing::{Header, H256},
	traits::{BlakeTwo256, IdentityLookup},
	BuildStorage,
};
use sp_std::prelude::*;

mod pallet_test {
	use frame_support::pallet_prelude::Get;

	frame_support::decl_storage! {
		trait Store for Module<T: Config<I>, I: Instance = DefaultInstance> as Test where
			<T as OtherConfig>::OtherEvent: Into<<T as Config<I>>::Event>
		{
			pub Value get(fn value): Option<u32>;
		}
	}

	frame_support::decl_module! {
		pub struct Module<T: Config<I>, I: Instance = DefaultInstance> for enum Call where
			origin: T::Origin, <T as OtherConfig>::OtherEvent: Into<<T as Config<I>>::Event>
		{
			#[weight = 0]
			fn set_value(origin, n: u32) -> frame_support::dispatch::DispatchResult {
				let _sender = frame_system::ensure_signed(origin)?;
				Value::<I>::put(n);
				Ok(())
			}

			#[weight = 0]
			fn dummy(origin, _n: u32) -> frame_support::dispatch::DispatchResult {
				let _sender = frame_system::ensure_none(origin)?;
				Ok(())
			}
		}
	}

	pub trait OtherConfig {
		type OtherEvent;
	}

	pub trait Config<I: Instance = DefaultInstance>: frame_system::Config + OtherConfig
	where
		Self::OtherEvent: Into<<Self as Config<I>>::Event>,
	{
		type Event;
		type LowerBound: Get<u32>;
		type UpperBound: Get<u32>;
	}
}

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

frame_support::construct_runtime!(
	pub enum Test where
		Block = Block,
		NodeBlock = Block,
		UncheckedExtrinsic = UncheckedExtrinsic,
	{
		System: frame_system::{Pallet, Call, Config, Storage, Event<T>},
		TestPallet: pallet_test::{Pallet, Call, Storage},
	}
);

impl frame_system::Config for Test {
	type BaseCallFilter = frame_support::traits::Everything;
	type BlockWeights = ();
	type BlockLength = ();
	type DbWeight = ();
	type Origin = Origin;
	type Index = u64;
	type BlockNumber = u64;
	type Hash = H256;
	type Call = Call;
	type Hashing = BlakeTwo256;
	type AccountId = u64;
	type Lookup = IdentityLookup<Self::AccountId>;
	type Header = Header;
	type Event = Event;
	type BlockHashCount = ();
	type Version = ();
	type PalletInfo = PalletInfo;
	type AccountData = ();
	type OnNewAccount = ();
	type OnKilledAccount = ();
	type SystemWeightInfo = ();
	type SS58Prefix = ();
	type OnSetCode = ();
	type MaxConsumers = frame_support::traits::ConstU32<16>;
}

impl pallet_test::Config for Test {
	type Event = Event;
	type LowerBound = ConstU32<1>;
	type UpperBound = ConstU32<100>;
}

impl pallet_test::OtherConfig for Test {
	type OtherEvent = Event;
}

fn new_test_ext() -> sp_io::TestExternalities {
	GenesisConfig::default().build_storage().unwrap().into()
}

mod benchmarks {
	use super::pallet_test::{self, Value};
	use crate::account;
	use frame_support::{ensure, StorageValue};
	use frame_system::RawOrigin;
	use sp_std::prelude::*;

	// Additional used internally by the benchmark macro.
	use super::pallet_test::{Call, Config, Pallet};
	use frame_support::traits::Instance;

	crate::benchmarks_instance! {
		where_clause {
			where
				<T as pallet_test::OtherConfig>::OtherEvent: Clone
					+ Into<<T as pallet_test::Config<I>>::Event>,
				<T as pallet_test::Config<I>>::Event: Clone,
		}

		set_value {
			let b in 1 .. 1000;
			let caller = account::<T::AccountId>("caller", 0, 0);
		}: _ (RawOrigin::Signed(caller), b.into())
		verify {
			assert_eq!(Value::<pallet_test::DefaultInstance>::get(), Some(b));
		}

		other_name {
			let b in 1 .. 1000;
		}: dummy (RawOrigin::None, b.into())

		sort_vector {
			let x in 1 .. 10000;
			let mut m = Vec::<u32>::new();
			for i in (0..x).rev() {
				m.push(i);
			}
		}: {
			m.sort();
		} verify {
			ensure!(m[0] == 0, "You forgot to sort!")
		}

		impl_benchmark_test_suite!(
			Pallet,
			crate::tests_instance::new_test_ext(),
			crate::tests_instance::Test
		)
	}
}
