为调用另一份合同的合同编写硬件测试

Question

基本上，我需要在我的合同中使用戴铭天。我想测试它，所以我复制了DAI智能合同代码，并将其部署在本地主机上。一切都很好，但我不能为代码编写硬质测试，因为它不知道部署在本地主机上的契约。在我的合同中使用另一个合同时，我应该如何编写测试？

    address daiContractAddress = 0x9fE46736679d2D9a65F0992F2272dE9f3c7fa6e0; // HOW TO GET THIS TO HARDHAT TESTS?

    function getDaiBalanceForOwner() external view returns(uint){
        IERC20 dai = IERC20(address(daiContractAddress ));
        return dai.balanceOf(msg.sender); //Error: Transaction reverted: function call to a non-contract account
    }

Answer 1

在@LauriPeltonen的帮助下，最后的解决方案是:我只是在beforeEach中部署我的dai合同，然后取其地址并将其传递给合同constructor。

稳健性：

address public daiContractAddress; 

constructor(address _daiContractAddress ) {
    daiContractAddress = _daiContractAddress;
}


function getDaiBalanceForOwner() external view returns(uint){
    IERC20 dai = IERC20(address(daiContractAddress));
    return dai.balanceOf(msg.sender);
}

EthersJS测试：

beforeEach(async function () {
    dai = await ethers.getContractFactory("Dai"); 
    myContract= await ethers.getContractFactory("MyContract"); 
     
    dai = await dai.deploy(1); //deploying dai contract first
    
    myContract = await myContract.deploy(dai.address); //deploying my contract later using dai.address in constructor
  });

  describe("Deployment", function() {
    it("Should be able to implement usd dai stablecoin", async function() {
      expect(ethers.utils.formatEther(await myContract.getDaiBalanceForOwner())).to.equal("0.0");
    });
  });