✅ Add test

test/integration/permit.behavior.sol

@@ -164,6 +164,49 @@ contract PermitBehaviorTest is Test, PermitSignature {
  assertEq(sUSD.balanceOf(address(account)), AMOUNT);
  }
 
+ function test_Permit_Deposit_Margin_Twice() public {
+ mintSUSD(signer, AMOUNT * 2);
+
+ IPermit2.PermitSingle memory permitSingle = IPermit2.PermitSingle({
+ details: IPermit2.PermitDetails({
+ token: address(sUSD),
+ amount: type(uint160).max,
+ expiration: type(uint48).max,
+ nonce: 0
+ }),
+ spender: address(account),
+ sigDeadline: block.timestamp + 1000
+ });
+
+ bytes memory signature = getPermitSignature({
+ permit: permitSingle,
+ privateKey: signerPrivateKey,
+ domainSeparator: PERMIT2.DOMAIN_SEPARATOR()
+ });
+
+ IAccount.Command[] memory commands = new IAccount.Command[](2);
+ commands[0] = IAccount.Command.PERMIT2_PERMIT;
+ commands[1] = IAccount.Command.ACCOUNT_MODIFY_MARGIN;
+
+ bytes[] memory inputs = new bytes[](2);
+ inputs[0] = abi.encode(permitSingle, signature);
+ inputs[1] = abi.encode(AMOUNT);
+
+ vm.prank(signer);
+ account.execute(commands, inputs);
+
+ commands = new IAccount.Command[](1);
+ commands[0] = IAccount.Command.ACCOUNT_MODIFY_MARGIN;
+
+ inputs = new bytes[](1);
+ inputs[0] = abi.encode(AMOUNT);
+
+ vm.prank(signer);
+ account.execute(commands, inputs);
+
+ assertEq(sUSD.balanceOf(address(account)), AMOUNT * 2);
+ }
+
  function test_Permit_UniswapV3Swap() public {
  IPermit2.PermitSingle memory permitSingle = IPermit2.PermitSingle({
  details: IPermit2.PermitDetails({