crowdloan.rs

			let fund_index = create_fund::<T>(1337, end);
			let caller: T::AccountId = whitelisted_caller();
			let contributor = account("contributor", 0, 0);
			contribute_fund::<T>(&contributor, fund_index);
			frame_system::Pallet::<T>::set_block_number(200u32.into());
		}: _(RawOrigin::Signed(caller), contributor.clone(), fund_index)
		verify {
			assert_last_event::<T>(Event::<T>::Withdrew(contributor, fund_index, T::MinContribution::get()).into());
		}

		// Worst case: Refund removes `RemoveKeysLimit` keys, and is fully refunded.
		#[skip_meta]
		refund {
			let k in 0 .. T::RemoveKeysLimit::get();
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end = lpl + offset;
			let fund_index = create_fund::<T>(1337, end);

			// Dissolve will remove at most `RemoveKeysLimit` at once.
			for i in 0 .. k {
				contribute_fund::<T>(&account("contributor", i, 0), fund_index);
			}

			let caller: T::AccountId = whitelisted_caller();
			frame_system::Pallet::<T>::set_block_number(200u32.into());
		}: _(RawOrigin::Signed(caller), fund_index)
		verify {
			assert_last_event::<T>(Event::<T>::AllRefunded(fund_index).into());
		}

		dissolve {
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end = lpl + offset;
			let fund_index = create_fund::<T>(1337, end);
			let caller: T::AccountId = whitelisted_caller();
			frame_system::Pallet::<T>::set_block_number(T::BlockNumber::max_value());
		}: _(RawOrigin::Signed(caller.clone()), fund_index)
		verify {
			assert_last_event::<T>(Event::<T>::Dissolved(fund_index).into());
		}

		edit {
			let para_id = ParaId::from(1);
			let cap = BalanceOf::<T>::max_value();
			let first_period = 0u32.into();
			let last_period = 3u32.into();
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end = lpl + offset;

			let caller: T::AccountId = whitelisted_caller();
			let head_data = T::Registrar::worst_head_data();
			let validation_code = T::Registrar::worst_validation_code();

			let verifier = MultiSigner::unchecked_from(account::<[u8; 32]>("verifier", 0, 0));

			CurrencyOf::<T>::make_free_balance_be(&caller, BalanceOf::<T>::max_value());
			T::Registrar::register(caller.clone(), para_id, head_data, validation_code)?;
			T::Registrar::execute_pending_transitions();

			Crowdloan::<T>::create(
				RawOrigin::Signed(caller).into(),
				para_id, cap, first_period, last_period, end, Some(verifier.clone()),
			)?;

			// Doesn't matter what we edit to, so use the same values.
		}: _(RawOrigin::Root, para_id, cap, first_period, last_period, end, Some(verifier))
		verify {
			assert_last_event::<T>(Event::<T>::Edited(para_id).into())
		}

		add_memo {
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end = lpl + offset;
			let fund_index = create_fund::<T>(1, end);
			let caller: T::AccountId = whitelisted_caller();
			contribute_fund::<T>(&caller, fund_index);
			let worst_memo = vec![42; T::MaxMemoLength::get().into()];
		}: _(RawOrigin::Signed(caller.clone()), fund_index, worst_memo.clone())
		verify {
			let fund = Funds::<T>::get(fund_index).expect("fund was created...");
			assert_eq!(
				Crowdloan::<T>::contribution_get(fund.trie_index, &caller),
				(T::MinContribution::get(), worst_memo),
			);
		}

		poke {
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end = lpl + offset;
			let fund_index = create_fund::<T>(1, end);
			let caller: T::AccountId = whitelisted_caller();
			contribute_fund::<T>(&caller, fund_index);
			NewRaise::<T>::kill();
			assert!(NewRaise::<T>::get().is_empty());
		}: _(RawOrigin::Signed(caller), fund_index)
		verify {
			assert!(!NewRaise::<T>::get().is_empty());
			assert_last_event::<T>(Event::<T>::AddedToNewRaise(fund_index).into())
		}

		// Worst case scenario: N funds are all in the `NewRaise` list, we are
		// in the beginning of the ending period, and each fund outbids the next
		// over the same periods.
		on_initialize {
			// We test the complexity over different number of new raise
			let n in 2 .. 100;
			let (lpl, offset) = T::Auctioneer::lease_period_length();
			let end_block = lpl + offset - 1u32.into();

			let pubkey = crypto::create_ed25519_pubkey(b"//verifier".to_vec());

			for i in 0 .. n {
				let fund_index = create_fund::<T>(i, end_block);
				let contributor: T::AccountId = account("contributor", i, 0);
				let contribution = T::MinContribution::get() * (i + 1).into();
				let payload = (fund_index, &contributor, BalanceOf::<T>::default(), contribution);
				let sig = crypto::create_ed25519_signature(&payload.encode(), pubkey.clone());

				CurrencyOf::<T>::make_free_balance_be(&contributor, BalanceOf::<T>::max_value());
				Crowdloan::<T>::contribute(RawOrigin::Signed(contributor).into(), fund_index, contribution, Some(sig))?;
			}

			let now = frame_system::Pallet::<T>::block_number();
			let (lease_period_index, _) = T::Auctioneer::lease_period_index(now).unwrap_or_default();
			let duration = end_block
				.checked_sub(&frame_system::Pallet::<T>::block_number())
				.ok_or("duration of auction less than zero")?;
			T::Auctioneer::new_auction(duration, lease_period_index)?;

			assert_eq!(T::Auctioneer::auction_status(end_block).is_ending(), Some((0u32.into(), 0u32.into())));
			assert_eq!(NewRaise::<T>::get().len(), n as usize);
			let old_endings_count = EndingsCount::<T>::get();
		}: {
			Crowdloan::<T>::on_initialize(end_block);
		} verify {
			assert_eq!(EndingsCount::<T>::get(), old_endings_count + 1);
			assert_last_event::<T>(Event::<T>::HandleBidResult((n - 1).into(), Ok(())).into());
		}

		impl_benchmark_test_suite!(
			Crowdloan,
			crate::integration_tests::new_test_ext_with_offset(10),
			crate::integration_tests::Test,
		);
	}
}