Add zero address check for asset issuer ID in erc20 gateway v4

.changeset/witty-eyes-march.md

@@ -0,0 +1,5 @@
+---
+'@fuel-bridge/solidity-contracts': major
+---
+
+add zero address check for asset issuer id

packages/solidity-contracts/contracts/messaging/gateway/FuelERC20Gateway/FuelERC20GatewayV4.sol

@@ -34,6 +34,7 @@ contract FuelERC20GatewayV4 is
     error GlobalDepositLimit();
     error CannotDepositZero();
     error CannotWithdrawZero();
+    error InvalidAssetIssuerID();
     error InvalidSender();
     error InvalidAmount();
 
@@ -145,6 +146,8 @@ contract FuelERC20GatewayV4 is
     /// @param amount Amount of tokens to deposit
     /// @dev Made payable to reduce gas costs
     function deposit(bytes32 to, address tokenAddress, uint256 amount) external payable virtual whenNotPaused {
+        if (assetIssuerId == bytes32(0)) revert InvalidAssetIssuerID();
+
         uint8 decimals = _getTokenDecimals(tokenAddress);
         uint256 l2MintedAmount = _adjustDepositDecimals(decimals, amount);
 
@@ -173,6 +176,8 @@ contract FuelERC20GatewayV4 is
         uint256 amount,
         bytes calldata data
     ) external payable virtual whenNotPaused {
+        if (assetIssuerId == bytes32(0)) revert InvalidAssetIssuerID();
+
         uint8 decimals = _getTokenDecimals(tokenAddress);
         uint256 l2MintedAmount = _adjustDepositDecimals(decimals, amount);
 
@@ -191,6 +196,8 @@ contract FuelERC20GatewayV4 is
     }
 
     function sendMetadata(address tokenAddress) external payable virtual whenNotPaused {
+        if (assetIssuerId == bytes32(0)) revert InvalidAssetIssuerID();
+
         bytes memory metadataMessage = abi.encodePacked(
             assetIssuerId,
             uint256(MessageType.METADATA),

packages/solidity-contracts/test/behaviors/erc20GatewayV4.behavior.test.ts

@@ -357,6 +357,28 @@ export function behavesLikeErc20GatewayV4(fixture: () => Promise<Env>) {
             );
           });
 
+          it('reverts when asset issuer id is not set', async () => {
+            const {
+              erc20Gateway,
+              token,
+              signers: [deployer, user],
+            } = env;
+
+            const depositTo = randomBytes32();
+            const depositAmount = MaxUint256;
+
+            await erc20Gateway.connect(deployer).setAssetIssuerId(ZeroHash);
+
+            const tx = erc20Gateway
+              .connect(user)
+              .deposit(depositTo, token, depositAmount);
+
+            await expect(tx).to.be.revertedWithCustomError(
+              erc20Gateway,
+              'InvalidAssetIssuerID'
+            );
+          });
+
           it('calls FuelMessagePortal', async () => {
             const {
               erc20Gateway,