Cleanup Imports, Update solidity version, etc...

.github/workflows/test.yml

@@ -1,9 +1,10 @@
-name: CI
+name: Foundry CI
 
 on:
   push:
+    branches: [main]
   pull_request:
-  workflow_dispatch:
+    branches: [main]
 
 env:
   FOUNDRY_PROFILE: ci

script/BatchCallAndSponsor.s.sol

@@ -1,19 +1,12 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.28;
 
 import "forge-std/Script.sol";
-import {Vm} from "forge-std/Vm.sol";
-import {BatchCallAndSponsor} from "../src/BatchCallAndSponsor.sol";
-import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
-import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
-
-contract MockERC20 is ERC20 {
-    constructor() ERC20("Mock Token", "MOCK") {}
-
-    function mint(address to, uint256 amount) external {
-        _mint(to, amount);
-    }
-}
+import "forge-std/Vm.sol";
+import "src/BatchCallAndSponsor.sol";
+import "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
+import "lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol";
+import "test/MockERC20.sol";
 
 contract BatchCallAndSponsorScript is Script {
     // Alice's address and private key (EOA with no initial contract code).

script/DeployBatchCaller.s.sol

@@ -1,11 +1,11 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.28;
 
 import "forge-std/Script.sol";
-import {Vm} from "forge-std/Vm.sol";
-import {BatchCallAndSponsor} from "../src/BatchCallAndSponsor.sol";
-import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
-import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
+import "forge-std/Vm.sol";
+import "src/BatchCallAndSponsor.sol";
+import "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
+import "lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol";
 
 contract DeployBatchCaller is Script {
     BatchCallAndSponsor public batchCaller;

src/BatchCallAndSponsor.sol

@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.28;
 
-import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
-import "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
+import "lib/openzeppelin-contracts/contracts/utils/cryptography/ECDSA.sol";
+import "lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol";
 
 /**
  * @title BatchCallAndSponsor

test/BatchCallAndSponsor.t.sol

@@ -1,19 +1,11 @@
 // SPDX-License-Identifier: MIT
-pragma solidity ^0.8.20;
+pragma solidity ^0.8.28;
 
 import {Test, console2} from "forge-std/Test.sol";
-import {Vm} from "forge-std/Vm.sol";
-import {BatchCallAndSponsor} from "../src/BatchCallAndSponsor.sol";
-import {ERC20} from "@openzeppelin/contracts/token/ERC20/ERC20.sol";
-import {MessageHashUtils} from "@openzeppelin/contracts/utils/cryptography/MessageHashUtils.sol";
-
-contract MockERC20 is ERC20 {
-    constructor() ERC20("Mock Token", "MOCK") {}
-
-    function mint(address to, uint256 amount) external {
-        _mint(to, amount);
-    }
-}
+import "forge-std/Vm.sol";
+import "lib/openzeppelin-contracts/contracts/utils/cryptography/MessageHashUtils.sol";
+import "src/BatchCallAndSponsor.sol";
+import "test/MockERC20.sol";
 
 contract BatchCallAndSponsorTest is Test {
     // Alice's address and private key (EOA with no initial contract code).

test/MockERC20.sol

@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: MIT
+pragma solidity ^0.8.28;
+
+import "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol";
+
+contract MockERC20 is ERC20 {
+    constructor() ERC20("Mock Token", "MOCK") {}
+
+    function mint(address to, uint256 amount) external {
+        _mint(to, amount);
+    }
+}