diff --git a/runtime/polkadot/src/constants.rs b/runtime/polkadot/src/constants.rs
index a80d6fdc6e1e..aa11202c9e83 100644
--- a/runtime/polkadot/src/constants.rs
+++ b/runtime/polkadot/src/constants.rs
@@ -19,9 +19,9 @@ pub mod currency {
use primitives::Balance;
pub const DOTS: Balance = 1_000_000_000_000;
- pub const DOLLARS: Balance = DOTS / 100;
- pub const CENTS: Balance = DOLLARS / 100;
- pub const MILLICENTS: Balance = CENTS / 1_000;
+ pub const DOLLARS: Balance = DOTS / 100; // 10_000_000_000
+ pub const CENTS: Balance = DOLLARS / 100; // 100_000_000
+ pub const MILLICENTS: Balance = CENTS / 1_000; // 100_000
}
/// Time and blocks.
diff --git a/runtime/polkadot/tests/weights.rs b/runtime/polkadot/tests/weights.rs
new file mode 100644
index 000000000000..6bfe1dced4e7
--- /dev/null
+++ b/runtime/polkadot/tests/weights.rs
@@ -0,0 +1,275 @@
+// Copyright 2020 Parity Technologies (UK) Ltd.
+// This file is part of Polkadot.
+
+// Polkadot 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.
+
+// Polkadot 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 Polkadot. If not, see .
+
+//! Tests to make sure that Polkadot's weights and fees match what we
+//! expect from Substrate.
+//!
+//! These test are not meant to be exhaustive, as it is inevitable that
+//! weights in Substrate will change. Instead they are supposed to provide
+//! some sort of indicator that calls we consider important (e.g Balances::transfer)
+//! have not suddenly changed from under us.
+
+use frame_support::{
+ traits::ContainsLengthBound,
+ weights::{constants::*, GetDispatchInfo, Weight},
+};
+use keyring::AccountKeyring;
+use polkadot_runtime::constants::currency::*;
+use polkadot_runtime::{self, Runtime};
+use primitives::AccountId;
+use runtime_common::MaximumBlockWeight;
+
+use democracy::Call as DemocracyCall;
+use elections_phragmen::Call as PhragmenCall;
+use session::Call as SessionCall;
+use staking::Call as StakingCall;
+use system::Call as SystemCall;
+use treasury::Call as TreasuryCall;
+
+type DbWeight = ::DbWeight;
+
+#[test]
+fn sanity_check_weight_per_time_constants_are_as_expected() {
+ // These values comes from Substrate, we want to make sure that if it
+ // ever changes we don't accidently break Polkadot
+ assert_eq!(WEIGHT_PER_SECOND, 1_000_000_000_000);
+ assert_eq!(WEIGHT_PER_MILLIS, WEIGHT_PER_SECOND / 1000);
+ assert_eq!(WEIGHT_PER_MICROS, WEIGHT_PER_MILLIS / 1000);
+ assert_eq!(WEIGHT_PER_NANOS, WEIGHT_PER_MICROS / 1000);
+}
+
+#[test]
+fn weight_of_balances_transfer_is_correct() {
+ // #[weight = T::DbWeight::get().reads_writes(1, 1) + 70_000_000]
+ let expected_weight = DbWeight::get().read + DbWeight::get().write + 70_000_000;
+
+ let weight = polkadot_runtime::BalancesCall::transfer::(Default::default(), Default::default())
+ .get_dispatch_info()
+ .weight;
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_balances_transfer_keep_alive_is_correct() {
+ // #[weight = T::DbWeight::get().reads_writes(1, 1) + 50_000_000]
+ let expected_weight = DbWeight::get().read + DbWeight::get().write + 50_000_000;
+
+ let weight = polkadot_runtime::BalancesCall::transfer_keep_alive::(Default::default(), Default::default())
+ .get_dispatch_info()
+ .weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_timestamp_set_is_correct() {
+ // #[weight = T::DbWeight::get().reads_writes(2, 1) + 8_000_000]
+ let expected_weight = (2 * DbWeight::get().read) + DbWeight::get().write + 8_000_000;
+ let weight = polkadot_runtime::TimestampCall::set::(Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_staking_bond_is_correct() {
+ let controller: AccountId = AccountKeyring::Alice.into();
+
+ // #[weight = 67 * WEIGHT_PER_MICROS + T::DbWeight::get().reads_writes(5, 4)]
+ let expected_weight = 67 * WEIGHT_PER_MICROS + (DbWeight::get().read * 5) + (DbWeight::get().write * 4);
+ let weight = StakingCall::bond::(controller, 1 * DOLLARS, Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_staking_validate_is_correct() {
+ // #[weight = 17 * WEIGHT_PER_MICROS + T::DbWeight::get().reads_writes(2, 2)]
+ let expected_weight = 17 * WEIGHT_PER_MICROS + (DbWeight::get().read * 2) + (DbWeight::get().write * 2);
+ let weight = StakingCall::validate::(Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_staking_nominate_is_correct() {
+ let targets: Vec = vec![Default::default(), Default::default(), Default::default()];
+
+ // #[weight = T::DbWeight::get().reads_writes(3, 2)
+ // .saturating_add(22 * WEIGHT_PER_MICROS)
+ // .saturating_add((360 * WEIGHT_PER_NANOS).saturating_mul(targets.len() as Weight))
+ // ]
+ let db_weight = (DbWeight::get().read * 3) + (DbWeight::get().write * 2);
+ let targets_weight = (360 * WEIGHT_PER_NANOS).saturating_mul(targets.len() as Weight);
+
+ let expected_weight = db_weight.saturating_add(22 * WEIGHT_PER_MICROS).saturating_add(targets_weight);
+ let weight = StakingCall::nominate::(targets).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_system_set_code_is_correct() {
+ // #[weight = (T::MaximumBlockWeight::get(), DispatchClass::Operational)]
+ let expected_weight = MaximumBlockWeight::get();
+ let weight = SystemCall::set_code::(vec![]).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_system_set_storage_is_correct() {
+ let storage_items = vec![(vec![12], vec![34]), (vec![45], vec![83])];
+ let len = storage_items.len() as Weight;
+
+ // #[weight = FunctionOf(
+ // |(items,): (&Vec,)| {
+ // T::DbWeight::get().writes(items.len() as Weight)
+ // .saturating_add((items.len() as Weight).saturating_mul(600_000))
+ // },
+ // DispatchClass::Operational,
+ // Pays::Yes,
+ // )]
+ let expected_weight = (DbWeight::get().write * len).saturating_add(len.saturating_mul(600_000));
+ let weight = SystemCall::set_storage::(storage_items).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_system_remark_is_correct() {
+ // #[weight = 700_000]
+ let expected_weight = 700_000;
+ let weight = SystemCall::remark::(vec![]).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_session_set_keys_is_correct() {
+ // #[weight = 200_000_000
+ // + T::DbWeight::get().reads(2 + T::Keys::key_ids().len() as Weight)
+ // + T::DbWeight::get().writes(1 + T::Keys::key_ids().len() as Weight)]
+ //
+ // Polkadot has five possible session keys, so we default to key_ids.len() = 5
+ let expected_weight = 200_000_000 + (DbWeight::get().read * (2 + 5)) + (DbWeight::get().write * (1 + 5));
+ let weight = SessionCall::set_keys::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_session_purge_keys_is_correct() {
+ // #[weight = 120_000_000
+ // + T::DbWeight::get().reads_writes(2, 1 + T::Keys::key_ids().len() as Weight)]
+ //
+ // Polkadot has five possible session keys, so we default to key_ids.len() = 5
+ let expected_weight = 120_000_000 + (DbWeight::get().read * 2) + (DbWeight::get().write * (1 + 5));
+ let weight = SessionCall::purge_keys::().get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_democracy_propose_is_correct() {
+ // #[weight = 50_000_000 + T::DbWeight::get().reads_writes(2, 3)]
+ let expected_weight = 50_000_000 + (DbWeight::get().read * 2) + (DbWeight::get().write * 3);
+ let weight = DemocracyCall::propose::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_democracy_vote_is_correct() {
+ use democracy::AccountVote;
+ let vote = AccountVote::Standard { vote: Default::default(), balance: Default::default() };
+
+ // #[weight = 50_000_000 + 350_000 * Weight::from(T::MaxVotes::get()) + T::DbWeight::get().reads_writes(3, 3)]
+ let expected_weight = 50_000_000
+ + 350_000 * (Weight::from(polkadot_runtime::MaxVotes::get()))
+ + (DbWeight::get().read * 3)
+ + (DbWeight::get().write * 3);
+ let weight = DemocracyCall::vote::(Default::default(), vote).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_democracy_enact_proposal_is_correct() {
+ // #[weight = T::MaximumBlockWeight::get()]
+ let expected_weight = MaximumBlockWeight::get();
+ let weight =
+ DemocracyCall::enact_proposal::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_phragmen_vote_is_correct() {
+ // #[weight = 100_000_000]
+ let expected_weight = 100_000_000;
+ let weight = PhragmenCall::vote::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_phragmen_submit_candidacy_is_correct() {
+ // #[weight = 500_000_000]
+ let expected_weight = 500_000_000;
+ let weight = PhragmenCall::submit_candidacy::().get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_phragmen_renounce_candidacy_is_correct() {
+ // #[weight = (2_000_000_000, DispatchClass::Operational)]
+ let expected_weight = 2_000_000_000;
+ let weight = PhragmenCall::renounce_candidacy::().get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_treasury_propose_spend_is_correct() {
+ // #[weight = 120_000_000 + T::DbWeight::get().reads_writes(1, 2)]
+ let expected_weight = 120_000_000 + DbWeight::get().read + 2 * DbWeight::get().write;
+ let weight =
+ TreasuryCall::propose_spend::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_treasury_approve_proposal_is_correct() {
+ // #[weight = (34_000_000 + T::DbWeight::get().reads_writes(2, 1), DispatchClass::Operational)]
+ let expected_weight = 34_000_000 + 2 * DbWeight::get().read + DbWeight::get().write;
+ let weight = TreasuryCall::approve_proposal::(Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}
+
+#[test]
+fn weight_of_treasury_tip_is_correct() {
+ let max_len: Weight = ::Tippers::max_len() as Weight;
+
+ // #[weight = 68_000_000 + 2_000_000 * T::Tippers::max_len() as Weight
+ // + T::DbWeight::get().reads_writes(2, 1)]
+ let expected_weight = 68_000_000 + 2_000_000 * max_len + 2 * DbWeight::get().read + DbWeight::get().write;
+ let weight = TreasuryCall::tip::(Default::default(), Default::default()).get_dispatch_info().weight;
+
+ assert_eq!(weight, expected_weight);
+}