improve Legacy Contract tests (#13022)

* improve DeployerWhitelist test

* fix L1BlockNumber fallback test

* fixes

packages/contracts-bedrock/test/legacy/DeployerWhitelist.t.sol

@@ -10,6 +10,11 @@ import { DeployUtils } from "scripts/libraries/DeployUtils.sol";
 
 contract DeployerWhitelist_Test is Test {
     IDeployerWhitelist list;
+    address owner = address(12345);
+
+    event OwnerChanged(address oldOwner, address newOwner);
+    event WhitelistDisabled(address oldOwner);
+    event WhitelistStatusChanged(address deployer, bool whitelisted);
 
     /// @dev Sets up the test suite.
     function setUp() public {
@@ -27,10 +32,96 @@ contract DeployerWhitelist_Test is Test {
     }
 
     /// @dev Tests that `setOwner` correctly sets the contract owner.
-    function test_storageSlots_succeeds() external {
-        vm.prank(list.owner());
-        list.setOwner(address(1));
+    function test_setOwner_succeeds(address _owner) external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+        _owner = address(uint160(bound(uint160(_owner), 1, type(uint160).max)));
+
+        vm.prank(owner);
+        vm.expectEmit(true, true, true, true);
+        emit OwnerChanged(owner, _owner);
+        list.setOwner(_owner);
+
+        assertEq(list.owner(), _owner);
+    }
+
+    /// @dev Tests that `setOwner` reverts when the caller is not the owner.
+    function test_setOwner_reverts(address _caller, address _owner) external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.assume(_caller != owner);
+
+        vm.prank(_caller);
+        vm.expectRevert(bytes("DeployerWhitelist: function can only be called by the owner of this contract"));
+        list.setOwner(_owner);
+    }
+
+    /// @dev Tests that `setOwner` reverts when the new owner is the zero address.
+    function test_setOwner_reverts_zeroAddress() external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.prank(owner);
+        vm.expectRevert(bytes("DeployerWhitelist: can only be disabled via enableArbitraryContractDeployment"));
+        list.setOwner(address(0));
+    }
+
+    /// @dev Tests that `enableArbitraryContractDeployment` correctly disables the whitelist.
+    function test_enableArbitraryContractDeployment_succeeds() external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.prank(owner);
+        vm.expectEmit(true, true, true, true);
+        emit WhitelistDisabled(owner);
+        list.enableArbitraryContractDeployment();
+
+        assertEq(list.owner(), address(0));
+
+        // Any address is allowed to deploy contracts even if they are not whitelisted
+        assertEq(list.whitelist(address(1)), false);
+        assertEq(list.isDeployerAllowed(address(1)), true);
+    }
+
+    /// @dev Tests that `enableArbitraryContractDeployment` reverts when the caller is not the owner.
+    function test_enableArbitraryContractDeployment_reverts(address _caller) external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.assume(_caller != owner);
+
+        vm.prank(_caller);
+        vm.expectRevert(bytes("DeployerWhitelist: function can only be called by the owner of this contract"));
+        list.enableArbitraryContractDeployment();
+    }
+
+    /// @dev Tests that `setWhitelistedDeployer` correctly sets the whitelist status of a deployer.
+    function test_setWhitelistedDeployer_succeeds(address _deployer, bool _isWhitelisted) external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.prank(owner);
+        vm.expectEmit(true, true, true, true);
+        emit WhitelistStatusChanged(_deployer, _isWhitelisted);
+        list.setWhitelistedDeployer(_deployer, _isWhitelisted);
+
+        assertEq(list.whitelist(_deployer), _isWhitelisted);
+
+        // _deployer is whitelisted or not (and arbitrary contract deployment is not enabled)
+        assertNotEq(list.owner(), address(0));
+        assertEq(list.isDeployerAllowed(_deployer), _isWhitelisted);
+    }
+
+    /// @dev Tests that `setWhitelistedDeployer` reverts when the caller is not the owner.
+    function test_setWhitelistedDeployer_reverts(address _caller, address _deployer, bool _isWhitelisted) external {
+        vm.store(address(list), bytes32(uint256(0)), bytes32(uint256(uint160(owner))));
+        assertEq(list.owner(), owner);
+
+        vm.assume(_caller != owner);
 
-        assertEq(bytes32(uint256(1)), vm.load(address(list), bytes32(uint256(0))));
+        vm.prank(_caller);
+        vm.expectRevert(bytes("DeployerWhitelist: function can only be called by the owner of this contract"));
+        list.setWhitelistedDeployer(_deployer, _isWhitelisted);
     }
 }

packages/contracts-bedrock/test/legacy/L1BlockNumber.t.sol

@@ -49,7 +49,7 @@ contract L1BlockNumberTest is Test {
 
     /// @dev Tests that `fallback` is correctly dispatched.
     function test_fallback_succeeds() external {
-        (bool success, bytes memory ret) = address(bn).call(hex"");
+        (bool success, bytes memory ret) = address(bn).call(hex"11");
         assertEq(success, true);
         assertEq(ret, abi.encode(number));
     }