safe-tools v0.2.0

Gnosis Safe Tools for Foundry

SafeTestTools is a friendly wrapper for deploying safes, executing transactions, performing EIP1271 signatures, and enabling/disabling modules. It manages Safe deployments, private keys, and transaction signing so you can simply call _setupSafe() and ensure your code works with Safe's as well as EOAs.

Before -> After

Basic Usage

Quick Start

import "safe-tools/SafeTest.sol";
import "forge-std/Test.sol";

contract Test is Test, SafeTestTools {
    using SafeTestLib for SafeInstance;

    setUp() public {
        SafeInstance memory safeInstance = _setupSafe();
        address alice = address(0xA11c3);

        safeInstance.execTransaction({
            to: alice,
            value: 0.5 ether,
            data: ""
        }); // send .5 eth to alice

        assertEq(alice.balance, 0.5 ether); // passes ✅
    }
}

Basic Setup

Use the _setupSafe(); method to setup a SafeInstance with the default initialization parameters.

SafeInstance memory safeInstance = _setupSafe();

Default Parameters:

1. Threshold: 2/3
2. Signers: The owners are the first 3 signers from the standard test test test test test test test test test test test junk derived accounts. These accounts are vm.label'd as SAFETEST: Signer 0-2: for Forge's call tacing functionality.
3. Initial Balance: 10000 ether
4. Salt nonce: 0xbff0e1d6be3df3bedf05c892f554fbea3c6ca2bb9d224bc3f3d3fbc3ec267d1c

This will create a SafeInstance with the address of 0x584a697DC2b125117d232Fca046f6cDe5Edd0ba7

(See Custom Setup for more setup options)

The Safe Instance Struct:

struct SafeInstance {
    uint256 instanceId;
    uint256[] ownerPKs;
    address[] owners;
    uint256 threshold;
    DeployedSafe safe;
}

A safe instance stores:

1. instanceId: a unique id
2. ownerPKs: an array of owner private keys (NOTE! these PKs will be sorted by computed address for signing purposes)
3. owners: an array of owner addresses (sorted to match the private keys)
4. threshold: the signing threshold of the safe
5. safe: the address of the deployed safe wrapped in a custom interface DeployedSafe that includes all:
   • GnosisSafe.sol methods
   • CompatibilityFallbackHandler.sol methods (for EIP1271 signature validation, messaging hashing, token callbacks, etc)

SafeInstance Methods

Wrap the SafeInstance with SafeTestLib methods to add access wrappers for signing methods for common Safe methods.

using SafeTestLib for SafeInstance;

API

// EXEC FUNCTION VARIATIONS
function execTransaction(
    address to,
    uint256 value,
    bytes data
) public returns (bool);

function execTransaction(
    address to,
    uint256 value,
    bytes data,
    Enum.Operation operation
) public returns (bool);

function execTransaction(
    address to,
    uint256 value,
    bytes data,
    Enum.Operation operation,
    uint256 safeTxGas,
    uint256 baseGas,
    uint256 gasPrice,
    address gasToken,
    address refundReceiver,
    bytes memory signatures
) public returns (bool);

// MODULE FUNCTIONS

function enableModule(address module);

function disableModule(address module);

// MISC

function EIP1271Sign(bytes data);

function EIP1271Sign(bytes32 digest);

function incrementNonce() public returns (uint256 newNonce);

function signTransaction(
    uint256 privateKey,
    address to,
    uint256 value,
    bytes memory data,
    Enum.Operation operation,
    uint256 safeTxGas,
    uint256 baseGas,
    uint256 gasPrice,
    address gasToken,
    address refundReceiver
) public view returns (uint8 v, bytes32 r, bytes32 s)

Custom Setup

Setup options:

Then there are a few overrides of _setupSafe() at your disposal for custom Safe setup:

// pass an array of uint256 private keys
function _setupSafe(
    uint256[] memory ownerPKs,
    uint256 threshold
) public returns (SafeInstance memory);

// you could also specify the initial balance of the Safe
function _setupSafe(
    uint256[] memory ownerPKs,
    uint256 threshold,
    uint256 initialBalance
) public returns (SafeInstance memory);

// or if you need to fully tweak the Safe setup parameters, you can pass an `AdvancedSafeInitParams` struct
function _setupSafe(
    uint256[] memory ownerPKs,
    uint256 threshold,
    uint256 initialBalance,
    AdvancedSafeInitParams memory advancedParams
) public returns (SafeInstance memory)

AdvancedSafeInitParams

Passing the AdvancedSafeInitParams struct allows you to fully customize the Safe setup call parameters. The struct is defined as follows:

struct AdvancedSafeInitParams {
    bool includeFallbackHandler;
    uint256 saltNonce;
    address setupModulesCall_to;
    bytes setupModulesCall_data;
    uint256 refundAmount;
    address refundToken;
    address payable refundReceiver;
    bytes initData;
}

License

License MIT © Colin Nielsen