Sdk testing getting Invalid number of parameters

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2

I changed the sample.sol and use truffle compile and use normal truffle test with artifacts. Not sure if it is a hack or the correct way but it works…

const token = artifacts.require('Test.sol');

pragma solidity ^0.5.0;

import "../node_modules/@openzeppelin/contracts-ethereum-package/contracts/token/ERC20/StandaloneERC20.sol";

contract Test is StandaloneERC20 {
  function greet() public pure returns (string memory) {
    return "A Test";
  }
}

Now I want to upgrade the function greet in a separate testUpgrade.js file but I have no idea where to start… any help?

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Test upgrading a function