add route test framework

contracts/SmartRoute/SmartApprove.sol

@@ -0,0 +1,36 @@
+/*
+
+    Copyright 2020 DODO ZOO.
+    SPDX-License-Identifier: Apache-2.0
+
+*/
+
+pragma solidity 0.6.9;
+
+import {IERC20} from "../intf/IERC20.sol";
+import {SafeERC20} from "../lib/SafeERC20.sol";
+import {Ownable} from "../lib/Ownable.sol";
+
+
+contract SmartApprove is Ownable {
+    using SafeERC20 for IERC20;
+    address public smartSwap;
+
+    function setSmartSwap(address _smartSwap) external onlyOwner {
+        smartSwap = _smartSwap;
+    }
+
+    
+    event Test1(uint256 amount);
+
+    function claimTokens(
+        IERC20 token,
+        address who,
+        address dest,
+        uint256 amount
+    ) external {
+        require(msg.sender == smartSwap, "Not SmartSwap Address, Access restricted");
+        emit Test1(amount);
+        // token.safeTransferFrom(who, dest, amount);
+    }
+}