// This file is part of Substrate.

// Copyright (C) 2020 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.

//! Timestamp pallet benchmarking.

#![cfg(feature = "runtime-benchmarks")]

use super::*;
use sp_std::prelude::*;
use frame_system::RawOrigin;
use frame_support::{ensure, traits::OnFinalize};
use frame_benchmarking::{benchmarks, TrackedStorageKey};

use crate::Module as Timestamp;

const MAX_TIME: u32 = 100;

benchmarks! {
	_ { }

	set {
		let t in 1 .. MAX_TIME;
		// Ignore write to `DidUpdate` since it transient.
		let did_update_key = crate::DidUpdate::hashed_key().to_vec();
		frame_benchmarking::benchmarking::add_to_whitelist(TrackedStorageKey {
			key: did_update_key,
			has_been_read: false,
			has_been_written: true,
		});
	}: _(RawOrigin::None, t.into())
	verify {
		ensure!(Timestamp::<T>::now() == t.into(), "Time was not set.");
	}

	on_finalize {
		let t in 1 .. MAX_TIME;
		Timestamp::<T>::set(RawOrigin::None.into(), t.into())?;
		ensure!(DidUpdate::exists(), "Time was not set.");
		// Ignore read/write to `DidUpdate` since it is transient.
		let did_update_key = crate::DidUpdate::hashed_key().to_vec();
		frame_benchmarking::benchmarking::add_to_whitelist(did_update_key.into());
	}: { Timestamp::<T>::on_finalize(t.into()); }
	verify {
		ensure!(!DidUpdate::exists(), "Time was not removed.");
	}
}

#[cfg(test)]
mod tests {
	use super::*;
	use crate::tests::{new_test_ext, Test};
	use frame_support::assert_ok;

	#[test]
	fn test_benchmarks() {
		new_test_ext().execute_with(|| {
			assert_ok!(test_benchmark_set::<Test>());
			assert_ok!(test_benchmark_on_finalize::<Test>());
		});
	}
}
