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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::{
assert_event_emitted, assert_event_not_emitted,
mock::{
AccountId, ExtBuilder, PCall, PrecompilesValue, ProxyType, Runtime, RuntimeCall,
RuntimeEvent, RuntimeOrigin,
},
};
use fp_evm::MAX_TRANSACTION_GAS_LIMIT;
use frame_support::assert_ok;
use pallet_evm::Call as EvmCall;
use pallet_proxy::{
Call as ProxyCall, Event as ProxyEvent, Pallet as ProxyPallet, ProxyDefinition,
use precompile_utils::{precompile_set::AddressU64, prelude::*, testing::*};
use sp_core::{Get, H160, H256, U256};
use sp_runtime::traits::Dispatchable;
use std::cell::Cell;
use std::rc::Rc;
use std::str::from_utf8;
#[test]
fn test_selector_less_than_four_bytes_reverts() {
ExtBuilder::default().build().execute_with(|| {
PrecompilesValue::get()
.prepare_test(Alice, Precompile1, vec![1u8, 2, 3])
.execute_reverts(|output| output == b"Tried to read selector out of bounds");
});
}
fn test_unimplemented_selector_reverts() {
.prepare_test(Alice, Precompile1, vec![1u8, 2, 3, 4])
.execute_reverts(|output| output == b"Unknown selector");
fn selectors() {
assert!(PCall::add_proxy_selectors().contains(&0x74a34dd3));
assert!(PCall::remove_proxy_selectors().contains(&0xfef3f708));
assert!(PCall::remove_proxies_selectors().contains(&0x14a5b5fa));
assert!(PCall::proxy_selectors().contains(&0x0d3cff86));
assert!(PCall::proxy_force_type_selectors().contains(&0x4a36b2cd));
assert!(PCall::is_proxy_selectors().contains(&0xe26d38ed));
fn modifiers() {
let mut tester =
PrecompilesModifierTester::new(PrecompilesValue::get(), Alice, Precompile1);
tester.test_default_modifier(PCall::add_proxy_selectors());
tester.test_default_modifier(PCall::remove_proxy_selectors());
tester.test_default_modifier(PCall::remove_proxies_selectors());
tester.test_payable_modifier(PCall::proxy_selectors());
tester.test_payable_modifier(PCall::proxy_force_type_selectors());
tester.test_view_modifier(PCall::is_proxy_selectors());
fn test_add_proxy_fails_if_invalid_value_for_proxy_type() {
ExtBuilder::default()
.with_balances(vec![(Alice.into(), 1000), (Bob.into(), 1000)])
.build()
.execute_with(|| {
.prepare_test(
Alice,
Precompile1,
PCall::add_proxy {
delegate: Address(Bob.into()),
proxy_type: 10,
delay: 0,
)
.execute_reverts(|o| o == b"proxyType: Failed decoding value to ProxyType");
})
fn test_add_proxy_fails_if_duplicate_proxy() {
assert_ok!(RuntimeCall::Proxy(ProxyCall::add_proxy {
delegate: Bob.into(),
proxy_type: ProxyType::Something,
.dispatch(RuntimeOrigin::signed(Alice.into())));
proxy_type: ProxyType::Something as u8,
.execute_reverts(|o| o == b"Cannot add more than one proxy");
fn test_add_proxy_fails_if_less_permissive_proxy() {
proxy_type: ProxyType::Nothing as u8,
fn test_add_proxy_fails_if_more_permissive_proxy() {
proxy_type: ProxyType::Any as u8,
fn test_add_proxy_succeeds() {
delay: 1,
.execute_returns(());
assert_event_emitted!(RuntimeEvent::Proxy(ProxyEvent::ProxyAdded {
delegator: Alice.into(),
delegatee: Bob.into(),
}));
let proxies = <ProxyPallet<Runtime>>::proxies(AccountId::from(Alice)).0;
assert_eq!(
proxies,
vec![ProxyDefinition {
}],
fn test_remove_proxy_fails_if_invalid_value_for_proxy_type() {
PCall::remove_proxy {
fn test_remove_proxy_fails_if_proxy_not_exist() {
.execute_reverts(|output| from_utf8(&output).unwrap().contains("NotFound"));
fn test_remove_proxy_succeeds() {
assert_event_emitted!(RuntimeEvent::Proxy(ProxyEvent::ProxyRemoved {
assert_eq!(proxies, vec![])
fn test_remove_proxies_succeeds() {
delegate: Charlie.into(),
proxy_type: ProxyType::Any,
.prepare_test(Alice, Precompile1, PCall::remove_proxies {})
fn test_remove_proxies_succeeds_when_no_proxy_exists() {
fn test_proxy_force_type_fails_if_invalid_value_for_force_proxy_type() {
PCall::proxy_force_type {
real: Address(Bob.into()),
force_proxy_type: 10,
call_to: Address(Alice.into()),
call_data: BoundedBytes::from([]),
.execute_reverts(|o| o == b"forceProxyType: Failed decoding value to ProxyType");
fn test_proxy_fails_if_not_proxy() {
PCall::proxy {
.execute_reverts(|o| o == b"Not proxy");
fn test_proxy_fails_if_call_filtered() {
// add delayed proxy
proxy_type: 2,
// Trying to use delayed proxy without any announcement
Bob,
real: Address(Alice.into()),
call_to: Address(Bob.into()),
.execute_reverts(|o| o == b"CallFiltered");
fn test_is_proxy_returns_false_if_not_proxy() {
PCall::is_proxy {
.execute_returns(false);
fn test_is_proxy_returns_false_if_proxy_type_incorrect() {
fn test_is_proxy_returns_false_if_proxy_delay_incorrect() {
fn test_is_proxy_returns_true_if_proxy() {
.execute_returns(true);
fn test_nested_evm_bypass_proxy_should_allow_elevating_proxy_type() {
.with_balances(vec![(Alice.into(), 100000000), (Bob.into(), 100000000)])
// make Bob a ProxyType::Something for Alice
// construct the call wrapping the add_proxy precompile to escalate to ProxyType::Any
let add_proxy_precompile = PCall::add_proxy {
.into();
let evm_call = RuntimeCall::Evm(EvmCall::call {
source: Alice.into(),
target: Precompile1.into(),
input: add_proxy_precompile,
value: U256::zero(),
gas_limit: MAX_TRANSACTION_GAS_LIMIT.low_u64(),
max_fee_per_gas: U256::zero(),
max_priority_fee_per_gas: Some(U256::zero()),
nonce: None,
access_list: Vec::new(),
authorization_list: Vec::new(),
// call the evm call in a proxy call
assert_ok!(<ProxyPallet<Runtime>>::proxy(
RuntimeOrigin::signed(Bob.into()),
Alice.into(),
None,
Box::new(evm_call)
));
// assert Bob was not assigned ProxyType::Any
assert_event_not_emitted!(RuntimeEvent::Proxy(ProxyEvent::ProxyAdded {
fn fails_if_called_by_smart_contract() {
// Set code to Alice address as it if was a smart contract.
pallet_evm::AccountCodes::<Runtime>::insert(H160::from(Alice), vec![10u8]);
pallet_evm::AccountCodesMetadata::<Runtime>::insert(
H160::from(Alice),
pallet_evm::CodeMetadata {
size: 10,
hash: H256::default(),
);
.execute_reverts(|output| output == b"Function not callable by smart contracts");
fn succeed_if_called_by_precompile() {
// Set dummy code to Alice address as it if was a precompile.
pallet_evm::AccountCodes::<Runtime>::insert(
vec![0x60, 0x00, 0x60, 0x00, 0xfd],
fn succeed_if_is_proxy_called_by_smart_contract() {
fn proxy_proxy_should_fail_if_called_by_precompile() {
.with_balances(vec![
(AddressU64::<1>::get().into(), 1000),
(Bob.into(), 1000),
])
AddressU64::<1>::get(),
.execute_reverts(|output| output == b"Function not callable by precompiles");
fn proxy_proxy_should_succeed_if_called_by_allowed_precompile() {
// "Not proxy" means that the security filter has passed, so the call to proxy.proxy would work
// if we had done a proxy.add_proxy before.
// Address<2> allowed in mock.rs
AddressU64::<2>::get(),
.execute_reverts(|output| output == b"Not proxy");
fn proxy_proxy_should_succeed_if_called_by_smart_contract() {
// Bob allows Alice to make calls on his behalf
delegate: Alice.into(),
.dispatch(RuntimeOrigin::signed(Bob.into())));
let inside = Rc::new(Cell::new(false));
let inside2 = inside.clone();
// The smart contract calls proxy.proxy to call address Charlie as if it was Bob
call_to: Address(Charlie.into()),
call_data: BoundedBytes::from([1]),
.with_subcall_handle(move |subcall| {
let Subcall {
address,
transfer,
input,
target_gas: _,
is_static,
context,
} = subcall;
assert_eq!(context.caller, Bob.into());
assert_eq!(address, Charlie.into());
assert_eq!(is_static, false);
assert!(transfer.is_none());
assert_eq!(context.address, Charlie.into());
assert_eq!(context.apparent_value, 0u8.into());
assert_eq!(&input, &[1]);
inside2.set(true);
SubcallOutput {
output: b"TEST".to_vec(),
cost: 13,
logs: vec![log1(Bob, H256::repeat_byte(0x11), vec![])],
..SubcallOutput::succeed()
// Ensure that the subcall was actually called.
// proxy.proxy does not propagate the return value, so we cannot check for the return
// value "TEST"
assert!(inside.get(), "subcall not called");
fn proxy_proxy_should_fail_if_called_by_smart_contract_for_a_non_eoa_account() {
// Set code to Alice & Bob addresses as if they are smart contracts.
pallet_evm::AccountCodes::<Runtime>::insert(H160::from(Bob), vec![10u8]);
H160::from(Bob),
.execute_reverts(|output| output == b"real address must be EOA");
fn test_solidity_interface_has_all_function_selectors_documented_and_implemented() {
check_precompile_implements_solidity_interfaces(&["Proxy.sol"], PCall::supports_selector)