dexorder

lib_openzeppelin_contracts/contracts/mocks/token/ERC20ForceApproveMock.sol

@@ -0,0 +1,13 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.20;
+
+import {ERC20} from "../../token/ERC20/ERC20.sol";
+
+// contract that replicate USDT (0xdac17f958d2ee523a2206206994597c13d831ec7) approval behavior
+abstract contract ERC20ForceApproveMock is ERC20 {
+    function approve(address spender, uint256 amount) public virtual override returns (bool) {
+        require(amount == 0 || allowance(msg.sender, spender) == 0, "USDT approval failure");
+        return super.approve(spender, amount);
+    }
+}