ERC20Bridgable (ERC-7802) (#5735)

Co-authored-by: ernestognw <ernestognw@gmail.com>
Co-authored-by: Arr00 <13561405+arr00@users.noreply.github.com>

contracts/mocks/token/ERC20BridgeableMock.sol

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: MIT
+
+pragma solidity ^0.8.20;
+
+import {ERC20, ERC20Bridgeable} from "../../token/ERC20/extensions/draft-ERC20Bridgeable.sol";
+
+abstract contract ERC20BridgeableMock is ERC20Bridgeable {
+    address private _bridge;
+
+    error OnlyTokenBridge();
+    event OnlyTokenBridgeFnCalled(address caller);
+
+    constructor(address bridge) {
+        _bridge = bridge;
+    }
+
+    function onlyTokenBridgeFn() external onlyTokenBridge {
+        emit OnlyTokenBridgeFnCalled(msg.sender);
+    }
+
+    function _checkTokenBridge(address sender) internal view override {
+        if (sender != _bridge) {
+            revert OnlyTokenBridge();
+        }
+    }
+}