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// Copyright 2019-2025 PureStake Inc.
// This file is part of Moonbeam.
// Moonbeam 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.
// Moonbeam 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 Moonbeam. If not, see <http://www.gnu.org/licenses/>.
use crate::mock::{
events, AuthorMappingAccount, ExtBuilder, PCall, Precompiles, PrecompilesValue, Runtime,
RuntimeCall, RuntimeOrigin,
};
use fp_evm::MAX_TRANSACTION_GAS_LIMIT;
use frame_support::assert_ok;
use nimbus_primitives::NimbusId;
use pallet_author_mapping::{keys_wrapper, Call as AuthorMappingCall, Event as AuthorMappingEvent};
use pallet_balances::Event as BalancesEvent;
use pallet_evm::{Call as EvmCall, Event as EvmEvent};
use precompile_utils::{prelude::*, testing::*};
use sp_core::crypto::UncheckedFrom;
use sp_core::{H160, H256, U256};
use sp_runtime::traits::Dispatchable;
fn precompiles() -> Precompiles<Runtime> {
PrecompilesValue::get()
}
fn evm_call(input: Vec<u8>) -> EvmCall<Runtime> {
EvmCall::call {
source: Alice.into(),
target: Precompile1.into(),
input,
value: U256::zero(), // No value sent in EVM
gas_limit: MAX_TRANSACTION_GAS_LIMIT.low_u64(),
max_fee_per_gas: U256::zero(),
max_priority_fee_per_gas: Some(U256::zero()),
nonce: None, // Use the next nonce
access_list: Vec::new(),
authorization_list: Vec::new(),
#[test]
fn selector_less_than_four_bytes() {
ExtBuilder::default().build().execute_with(|| {
// This selector is only three bytes long when four are required.
precompiles()
.prepare_test(Alice, Precompile1, vec![1u8, 2u8, 3u8])
.execute_reverts(|output| output == b"Tried to read selector out of bounds");
});
fn no_selector_exists_but_length_is_right() {
.prepare_test(Alice, Precompile1, vec![1u8, 2u8, 3u8, 4u8])
.execute_reverts(|output| output == b"Unknown selector");
fn selectors() {
assert!(PCall::add_association_selectors().contains(&0xef8b6cd8));
assert!(PCall::update_association_selectors().contains(&0x25a39da5));
assert!(PCall::clear_association_selectors().contains(&0x448b54d6));
assert!(PCall::remove_keys_selectors().contains(&0xa36fee17));
assert!(PCall::set_keys_selectors().contains(&0xf1ec919c));
assert!(PCall::nimbus_id_of_selectors().contains(&0x3cb194f2));
assert!(PCall::address_of_selectors().contains(&0xbb34534c));
assert!(PCall::keys_of_selectors().contains(&0x089b7a68));
fn modifiers() {
let mut tester = PrecompilesModifierTester::new(precompiles(), Alice, Precompile1);
tester.test_default_modifier(PCall::add_association_selectors());
tester.test_default_modifier(PCall::update_association_selectors());
tester.test_default_modifier(PCall::clear_association_selectors());
tester.test_default_modifier(PCall::remove_keys_selectors());
tester.test_default_modifier(PCall::set_keys_selectors());
tester.test_view_modifier(PCall::nimbus_id_of_selectors());
tester.test_view_modifier(PCall::address_of_selectors());
tester.test_view_modifier(PCall::keys_of_selectors());
fn add_association_works() {
ExtBuilder::default()
.with_balances(vec![(Alice.into(), 1000)])
.build()
.execute_with(|| {
let expected_nimbus_id: NimbusId =
sp_core::sr25519::Public::unchecked_from([1u8; 32]).into();
let input = PCall::add_association {
nimbus_id: H256::from([1u8; 32]),
.into();
// Make sure the call goes through successfully
assert_ok!(RuntimeCall::Evm(evm_call(input)).dispatch(RuntimeOrigin::root()));
// Assert that the events are as expected
assert_eq!(
events(),
vec![
BalancesEvent::Reserved {
who: Alice.into(),
amount: 10
.into(),
AuthorMappingEvent::KeysRegistered {
nimbus_id: expected_nimbus_id.clone(),
account_id: Alice.into(),
keys: expected_nimbus_id.into(),
EvmEvent::Executed {
address: Precompile1.into()
]
);
})
fn update_association_works() {
let first_nimbus_id: NimbusId =
let second_nimbus_id: NimbusId =
sp_core::sr25519::Public::unchecked_from([2u8; 32]).into();
assert_ok!(
RuntimeCall::AuthorMapping(AuthorMappingCall::add_association {
nimbus_id: first_nimbus_id.clone(),
.dispatch(RuntimeOrigin::signed(Alice.into()))
let input = PCall::update_association {
old_nimbus_id: H256::from([1u8; 32]),
new_nimbus_id: H256::from([2u8; 32]),
keys: first_nimbus_id.into(),
AuthorMappingEvent::KeysRotated {
new_nimbus_id: second_nimbus_id.clone(),
new_keys: second_nimbus_id.into(),
fn clear_association_works() {
let nimbus_id: NimbusId = sp_core::sr25519::Public::unchecked_from([1u8; 32]).into();
nimbus_id: nimbus_id.clone(),
let input = PCall::clear_association {
keys: nimbus_id.clone().into(),
BalancesEvent::Unreserved {
AuthorMappingEvent::KeysRemoved {
keys: nimbus_id.into(),
fn remove_keys_works() {
let input = PCall::remove_keys {}.into();
fn set_keys_works() {
let first_vrf_key: NimbusId =
sp_core::sr25519::Public::unchecked_from([3u8; 32]).into();
let second_vrf_key: NimbusId =
sp_core::sr25519::Public::unchecked_from([4u8; 32]).into();
assert_ok!(RuntimeCall::AuthorMapping(AuthorMappingCall::set_keys {
keys: keys_wrapper::<Runtime>(first_nimbus_id.clone(), first_vrf_key.clone()),
.dispatch(RuntimeOrigin::signed(Alice.into())));
// Create input with keys inside a Solidity bytes.
let input = PCall::set_keys {
keys: solidity::encode_arguments((H256::from([2u8; 32]), H256::from([4u8; 32])))
keys: first_vrf_key.into(),
new_keys: second_vrf_key.into(),
mod nimbus_id_of {
use super::*;
fn call(address: impl Into<H160>, expected: H256) {
let address = address.into();
let call = RuntimeCall::AuthorMapping(AuthorMappingCall::set_keys {
assert_ok!(call.dispatch(RuntimeOrigin::signed(Alice.into())));
.prepare_test(
Bob,
AuthorMappingAccount,
PCall::nimbus_id_of {
address: Address(address),
},
)
.execute_returns(expected);
fn known_address() {
call(Alice, H256::from([1u8; 32]));
fn unknown_address() {
call(Bob, H256::from([0u8; 32]));
mod address_of {
fn call(nimbus_id: H256, expected: impl Into<H160>) {
let expected = expected.into();
.prepare_test(Bob, AuthorMappingAccount, PCall::address_of { nimbus_id })
.execute_returns(Address(expected));
fn known_id() {
call(H256::from([1u8; 32]), Alice);
fn unknown_id() {
call(H256::from([42u8; 32]), Address(H160::zero()));
mod keys_of {
fn call(nimbus_id: H256, expected: Vec<u8>) {
let expected: UnboundedBytes = expected.into();
.prepare_test(Bob, AuthorMappingAccount, PCall::keys_of { nimbus_id })
call(H256::from([1u8; 32]), vec![3u8; 32]);
call(H256::from([42u8; 32]), Vec::new());
fn test_solidity_interface_has_all_function_selectors_documented_and_implemented() {
check_precompile_implements_solidity_interfaces(
&["AuthorMappingInterface.sol"],
PCall::supports_selector,
fn test_deprecated_solidity_selectors_are_supported() {
for deprecated_function in [
"add_association(bytes32)",
"update_association(bytes32,bytes32)",
"clear_association(bytes32)",
"remove_keys()",
"set_keys(bytes)",
] {
let selector = compute_selector(deprecated_function);
if !PCall::supports_selector(selector) {
panic!(
"failed decoding selector 0x{:x} => '{}' as Action",
selector, deprecated_function,