Feat/paymaster foundry tests

.gitmodules

@@ -0,0 +1,6 @@
+[submodule "lib/nexus"]
+	path = lib/nexus
+	url = https://github.com/bcnmy/nexus
+[submodule "lib/forge-std"]
+	path = lib/forge-std
+	url = https://github.com/foundry-rs/forge-std

.solhint.json

@@ -1,7 +1,7 @@
 {
   "extends": "solhint:recommended",
   "rules": {
-    "compiler-version": ["error", "^0.8.24"],
+    "compiler-version": ["error", "^0.8.26"],
     "func-visibility": ["warn", { "ignoreConstructors": true }],
     "reentrancy": "error",
     "state-visibility": "error",

contracts/base/BasePaymaster.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.24;
+pragma solidity ^0.8.26;
 
 /* solhint-disable reason-string */
 
@@ -13,6 +13,7 @@ import "account-abstraction/contracts/core/UserOperationLib.sol";
  * provides helper methods for staking.
  * Validates that the postOp is called only by the entryPoint.
  */
+
 abstract contract BasePaymaster is IPaymaster, SoladyOwnable {
     IEntryPoint public immutable entryPoint;
 
@@ -25,22 +26,92 @@ abstract contract BasePaymaster is IPaymaster, SoladyOwnable {
         entryPoint = _entryPoint;
     }
 
-    //sanity check: make sure this EntryPoint was compiled against the same
-    // IEntryPoint of this paymaster
-    function _validateEntryPointInterface(IEntryPoint _entryPoint) internal virtual {
-        require(IERC165(address(_entryPoint)).supportsInterface(type(IEntryPoint).interfaceId), "IEntryPoint interface mismatch");
+    /**
+     * Add stake for this paymaster.
+     * This method can also carry eth value to add to the current stake.
+     * @param unstakeDelaySec - The unstake delay for this paymaster. Can only be increased.
+     */
+    function addStake(uint32 unstakeDelaySec) external payable onlyOwner {
+        entryPoint.addStake{ value: msg.value }(unstakeDelaySec);
+    }
+
+    /**
+     * Unlock the stake, in order to withdraw it.
+     * The paymaster can't serve requests once unlocked, until it calls addStake again
+     */
+    function unlockStake() external onlyOwner {
+        entryPoint.unlockStake();
+    }
+
+    /**
+     * Withdraw the entire paymaster's stake.
+     * stake must be unlocked first (and then wait for the unstakeDelay to be over)
+     * @param withdrawAddress - The address to send withdrawn value.
+     */
+    function withdrawStake(address payable withdrawAddress) external onlyOwner {
+        entryPoint.withdrawStake(withdrawAddress);
+    }
+
+    /// @inheritdoc IPaymaster
+    function postOp(
+        PostOpMode mode,
+        bytes calldata context,
+        uint256 actualGasCost,
+        uint256 actualUserOpFeePerGas
+    )
+        external
+        override
+    {
+        _requireFromEntryPoint();
+        _postOp(mode, context, actualGasCost, actualUserOpFeePerGas);
     }
 
     /// @inheritdoc IPaymaster
     function validatePaymasterUserOp(
         PackedUserOperation calldata userOp,
         bytes32 userOpHash,
         uint256 maxCost
-    ) external override returns (bytes memory context, uint256 validationData) {
+    )
+        external
+        override
+        returns (bytes memory context, uint256 validationData)
+    {
         _requireFromEntryPoint();
         return _validatePaymasterUserOp(userOp, userOpHash, maxCost);
     }
 
+    /**
+     * Add a deposit for this paymaster, used for paying for transaction fees.
+     */
+    function deposit() external payable virtual {
+        entryPoint.depositTo{ value: msg.value }(address(this));
+    }
+
+    /**
+     * Withdraw value from the deposit.
+     * @param withdrawAddress - Target to send to.
+     * @param amount          - Amount to withdraw.
+     */
+    function withdrawTo(address payable withdrawAddress, uint256 amount) external virtual onlyOwner {
+        entryPoint.withdrawTo(withdrawAddress, amount);
+    }
+
+    /**
+     * Return current paymaster's deposit on the entryPoint.
+     */
+    function getDeposit() public view returns (uint256) {
+        return entryPoint.balanceOf(address(this));
+    }
+
+    //sanity check: make sure this EntryPoint was compiled against the same
+    // IEntryPoint of this paymaster
+    function _validateEntryPointInterface(IEntryPoint _entryPoint) internal virtual {
+        require(
+            IERC165(address(_entryPoint)).supportsInterface(type(IEntryPoint).interfaceId),
+            "IEntryPoint interface mismatch"
+        );
+    }
+
     /**
      * Validate a user operation.
      * @param userOp     - The user operation.
@@ -51,18 +122,10 @@ abstract contract BasePaymaster is IPaymaster, SoladyOwnable {
         PackedUserOperation calldata userOp,
         bytes32 userOpHash,
         uint256 maxCost
-    ) internal virtual returns (bytes memory context, uint256 validationData);
-
-    /// @inheritdoc IPaymaster
-    function postOp(
-        PostOpMode mode,
-        bytes calldata context,
-        uint256 actualGasCost,
-        uint256 actualUserOpFeePerGas
-    ) external override {
-        _requireFromEntryPoint();
-        _postOp(mode, context, actualGasCost, actualUserOpFeePerGas);
-    }
+    )
+        internal
+        virtual
+        returns (bytes memory context, uint256 validationData);
 
     /**
      * Post-operation handler.
@@ -84,68 +147,27 @@ abstract contract BasePaymaster is IPaymaster, SoladyOwnable {
         bytes calldata context,
         uint256 actualGasCost,
         uint256 actualUserOpFeePerGas
-    ) internal virtual {
+    )
+        internal
+        virtual
+    {
         (mode, context, actualGasCost, actualUserOpFeePerGas); // unused params
         // subclass must override this method if validatePaymasterUserOp returns a context
         revert("must override");
     }
 
-    /**
-     * Add a deposit for this paymaster, used for paying for transaction fees.
-     */
-    function deposit() public virtual payable {
-        entryPoint.depositTo{value: msg.value}(address(this));
-    }
-
-    /**
-     * Withdraw value from the deposit.
-     * @param withdrawAddress - Target to send to.
-     * @param amount          - Amount to withdraw.
-     */
-    function withdrawTo(
-        address payable withdrawAddress,
-        uint256 amount
-    ) public virtual onlyOwner {
-        entryPoint.withdrawTo(withdrawAddress, amount);
-    }
-
-    /**
-     * Add stake for this paymaster.
-     * This method can also carry eth value to add to the current stake.
-     * @param unstakeDelaySec - The unstake delay for this paymaster. Can only be increased.
-     */
-    function addStake(uint32 unstakeDelaySec) external payable onlyOwner {
-        entryPoint.addStake{value: msg.value}(unstakeDelaySec);
-    }
-
-    /**
-     * Return current paymaster's deposit on the entryPoint.
-     */
-    function getDeposit() public view returns (uint256) {
-        return entryPoint.balanceOf(address(this));
-    }
-
-    /**
-     * Unlock the stake, in order to withdraw it.
-     * The paymaster can't serve requests once unlocked, until it calls addStake again
-     */
-    function unlockStake() external onlyOwner {
-        entryPoint.unlockStake();
-    }
-
-    /**
-     * Withdraw the entire paymaster's stake.
-     * stake must be unlocked first (and then wait for the unstakeDelay to be over)
-     * @param withdrawAddress - The address to send withdrawn value.
-     */
-    function withdrawStake(address payable withdrawAddress) external onlyOwner {
-        entryPoint.withdrawStake(withdrawAddress);
-    }
-
     /**
      * Validate the call is made from a valid entrypoint
      */
     function _requireFromEntryPoint() internal virtual {
         require(msg.sender == address(entryPoint), "Sender not EntryPoint");
     }
-}
+
+    function isContract(address _addr) internal view returns (bool) {
+        uint256 size;
+        assembly ("memory-safe") {
+            size := extcodesize(_addr)
+        }
+        return size > 0;
+    }
+}

contracts/common/Errors.sol

@@ -1,12 +1,11 @@
 // SPDX-License-Identifier: LGPL-3.0-only
-pragma solidity ^0.8.24;
+pragma solidity ^0.8.26;
 
 contract BiconomySponsorshipPaymasterErrors {
-
     /**
      * @notice Throws when the paymaster address provided is address(0)
      */
-    error PaymasterIdCannotBeZero();
+    error PaymasterIdCanNotBeZero();
 
     /**
      * @notice Throws when the 0 has been provided as deposit
@@ -16,26 +15,60 @@ contract BiconomySponsorshipPaymasterErrors {
     /**
      * @notice Throws when the verifiying signer address provided is address(0)
      */
-    error VerifyingSignerCannotBeZero();
+    error VerifyingSignerCanNotBeZero();
 
     /**
      * @notice Throws when the fee collector address provided is address(0)
      */
-    error FeeCollectorCannotBeZero();
+    error FeeCollectorCanNotBeZero();
 
     /**
      * @notice Throws when the fee collector address provided is a deployed contract
      */
-    error FeeCollectorCannotBeContract();
+    error FeeCollectorCanNotBeContract();
 
     /**
      * @notice Throws when the fee collector address provided is a deployed contract
      */
-    error VerifyingSignerCannotBeContract();
+    error VerifyingSignerCanNotBeContract();
+
+    /**
+     * @notice Throws when ETH withdrawal fails
+     */
+    error WithdrawalFailed();
+
+    /**
+     * @notice Throws when insufficient funds to withdraw
+     */
+    error InsufficientFundsInGasTank();
+
+    /**
+     * @notice Throws when invalid signature length in paymasterAndData
+     */
+    error InvalidSignatureLength();
+
+    /**
+     * @notice Throws when invalid signature length in paymasterAndData
+     */
+    error InvalidDynamicAdjustment();
+
+    /**
+     * @notice Throws when insufficient funds for paymasterid
+     */
+    error InsufficientFundsForPaymasterId();
+
+    /**
+     * @notice Throws when calling deposit()
+     */
+    error UseDepositForInstead();
 
     /**
      * @notice Throws when trying to withdraw to address(0)
      */
     error CanNotWithdrawToZeroAddress();
 
-}
+    /**
+     * @notice Throws when trying unaccountedGas is too high
+     */
+    error UnaccountedGasTooHigh();
+}

contracts/interfaces/IBiconomySponsorshipPaymaster.sol

@@ -1,19 +1,17 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.24;
+pragma solidity ^0.8.26;
 
 interface IBiconomySponsorshipPaymaster {
-    event PostopCostChanged(uint256 indexed _oldValue, uint256 indexed _newValue);
-    event FixedPriceMarkupChanged(uint32 indexed _oldValue, uint32 indexed _newValue);
+    event UnaccountedGasChanged(uint256 indexed oldValue, uint256 indexed newValue);
+    event FixedDynamicAdjustmentChanged(uint32 indexed oldValue, uint32 indexed newValue);
 
-    event VerifyingSignerChanged(address indexed _oldSigner, address indexed _newSigner, address indexed _actor);
+    event VerifyingSignerChanged(address indexed oldSigner, address indexed newSigner, address indexed actor);
 
-    event FeeCollectorChanged(
-        address indexed _oldFeeCollector, address indexed _newFeeCollector, address indexed _actor
-    );
-    event GasDeposited(address indexed _paymasterId, uint256 indexed _value);
-    event GasWithdrawn(address indexed _paymasterId, address indexed _to, uint256 indexed _value);
-    event GasBalanceDeducted(address indexed _paymasterId, uint256 indexed _charge, bytes32 indexed userOpHash);
-    event PremiumCollected(address indexed _paymasterId, uint256 indexed _premium);
+    event FeeCollectorChanged(address indexed oldFeeCollector, address indexed newFeeCollector, address indexed actor);
+    event GasDeposited(address indexed paymasterId, uint256 indexed value);
+    event GasWithdrawn(address indexed paymasterId, address indexed to, uint256 indexed value);
+    event GasBalanceDeducted(address indexed paymasterId, uint256 indexed charge, bytes32 indexed userOpHash);
+    event DynamicAdjustmentCollected(address indexed paymasterId, uint256 indexed dynamicAdjustment);
     event Received(address indexed sender, uint256 value);
-    event TokensWithdrawn(address indexed _token, address indexed _to, uint256 indexed _amount, address actor);
-}
+    event TokensWithdrawn(address indexed token, address indexed to, uint256 indexed amount, address actor);
+}

contracts/mocks/Imports.sol

@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-3.0
-pragma solidity ^0.8.24;
+pragma solidity ^0.8.26;
 
 /* solhint-disable reason-string */
 
@@ -8,4 +8,3 @@ import "account-abstraction/contracts/core/EntryPointSimulations.sol";
 
 import "@biconomy-devx/erc7579-msa/contracts/SmartAccount.sol";
 import "@biconomy-devx/erc7579-msa/contracts/factory/AccountFactory.sol";
-

contracts/mocks/MockValidator.sol

@@ -1,3 +1,3 @@
-pragma solidity ^0.8.24;
+pragma solidity ^0.8.26;
 
-import "@biconomy-devx/erc7579-msa/test/foundry/mocks/MockValidator.sol";
+import "@biconomy-devx/erc7579-msa/test/foundry/mocks/MockValidator.sol";