use POL mock

contracts/common/tokens/POLTokenMock.sol

@@ -0,0 +1,56 @@
+pragma solidity ^0.5.2;
+
+import "openzeppelin-solidity/contracts/token/ERC20/ERC20Mintable.sol";
+import "openzeppelin-solidity/contracts/utils/Address.sol";
+
+
+contract POLTokenMock is ERC20Mintable {
+    using Address for address;
+
+    // detailed ERC20
+    string public name;
+    string public symbol;
+    uint8 public decimals = 18;
+
+    constructor(string memory _name, string memory _symbol) public {
+        name = _name;
+        symbol = _symbol;
+
+        uint256 value = 10**10 * (10**18);
+        mint(msg.sender, value);
+    }
+
+    function safeTransfer(IERC20 token, address to, uint256 value) public {
+        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
+    }
+
+    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) public {
+        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
+    }
+
+    /**
+     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
+     * on the return value: the return value is optional (but if data is returned, it must equal true).
+     * @param token The token targeted by the call.
+     * @param data The call data (encoded using abi.encode or one of its variants).
+     */
+    function callOptionalReturn(IERC20 token, bytes memory data) private {
+        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
+        // we're implementing it ourselves.
+
+        // A Solidity high level call has three parts:
+        //  1. The target address is checked to verify it contains contract code
+        //  2. The call itself is made, and success asserted
+        //  3. The return value is decoded, which in turn checks the size of the returned data.
+
+        require(address(token).isContract());
+
+        // solhint-disable-next-line avoid-low-level-calls
+        (bool success, bytes memory returndata) = address(token).call(data);
+        require(success);
+
+        if (returndata.length > 0) { // Return data is optional
+            require(abi.decode(returndata, (bool)));
+        }
+    }
+}

contracts/common/tokens/TestToken.sol

@@ -1,11 +1,8 @@
 pragma solidity ^0.5.2;
 
 import "openzeppelin-solidity/contracts/token/ERC20/ERC20Mintable.sol";
-import "openzeppelin-solidity/contracts/utils/Address.sol";
 
 contract TestToken is ERC20Mintable {
-    using Address for address;
-
     // detailed ERC20
     string public name;
     string public symbol;
@@ -18,38 +15,4 @@ contract TestToken is ERC20Mintable {
         uint256 value = 10**10 * (10**18);
         mint(msg.sender, value);
     }
-
-    function safeTransfer(IERC20 token, address to, uint256 value) public {
-        callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
-    }
-
-    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) public {
-        callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
-    }
-
-    /**
-     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
-     * on the return value: the return value is optional (but if data is returned, it must equal true).
-     * @param token The token targeted by the call.
-     * @param data The call data (encoded using abi.encode or one of its variants).
-     */
-    function callOptionalReturn(IERC20 token, bytes memory data) private {
-        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
-        // we're implementing it ourselves.
-
-        // A Solidity high level call has three parts:
-        //  1. The target address is checked to verify it contains contract code
-        //  2. The call itself is made, and success asserted
-        //  3. The return value is decoded, which in turn checks the size of the returned data.
-
-        require(address(token).isContract());
-
-        // solhint-disable-next-line avoid-low-level-calls
-        (bool success, bytes memory returndata) = address(token).call(data);
-        require(success);
-
-        if (returndata.length > 0) { // Return data is optional
-            require(abi.decode(returndata, (bool)));
-        }
-    }
 }

package.json

@@ -42,6 +42,7 @@
     "mnemonics": "clock radar mass judge dismiss just intact mind resemble fringe diary casino"
   },
   "devDependencies": {
+    "@types/node": "11.1.0",
     "@openzeppelin/test-helpers": "^0.5.5",
     "babel-cli": "^6.26.0",
     "babel-eslint": "10.0.1",

test/helpers/artifacts.js

@@ -44,6 +44,7 @@ export const TransferWithSigPredicate = artifacts.require(
 
 // tokens
 export const MaticWETH = artifacts.require('MaticWETH')
+export const POLTokenMock = artifacts.require('POLTokenMock')
 export const TestToken = artifacts.require('TestToken')
 export const RootERC721 = artifacts.require('RootERC721')
 export const ERC721PlasmaMintable = artifacts.require('ERC721PlasmaMintable')

test/integration/root/DepositManagerUpdate.test.js

@@ -44,7 +44,7 @@ contract('DepositManager Update @skip-on-coverage', async function(accounts) {
         registry.contract.methods.updateContractMap(ethUtils.keccak256('polygonMigration'), polygonMigrationTest.address).encodeABI()
       )
 
-      pol = await artifacts.TestToken.new('Polygon Ecosystem Token', 'POL')
+      pol = await artifacts.POLTokenMock.new('Polygon Ecosystem Token', 'POL')
 
       await governance.update(
         registry.address,