使用松露为 Solidity 以太坊测试智能合约时出错

Question

我必须测试智能合约

文件审批合同

const ApprovalContract = artifacts.require( "../../contracts/ApprovalContract.sol");

 contract("ApprovalContract", function (accounts) {
it("initiates contract", async function () {
const contract = await ApprovalContract.deployed();
const approver = await contract.approver.call();
assert.equal(
  approver,
  0x8c4b9b5262f1ae1bdfb58f6579348817c4da4277,
  "approvers don't match"
);
});
it("takes a deposit", async function () {
const contract = await ApprovalContract.deployed();
  await contract.deposit(accounts[0], { value: 1e18, from: accounts[1] });
  assert.equal(
  await web3.eth.getBalance(contract.address),
  1e18,
  "amount did not match"
);
});
it(
"makes the transaction when approved, approver: " + accounts[2],
async function () {
  const contract = await ApprovalContract.deployed();
  const balance = await web3.eth.getBalance(contract.address);
  await contract.deposit(accounts[0], { value: 1e18, from: accounts[1] });
  await contract.approve({ from: accounts[2] });
  assert.equal(
    web3.eth.getBalance(contract.address),
    0,
    "didn't transfer ether"
  );
  }
);
 });

truffle compile，truffle migrate 运行成功。

<块引用>

当我运行命令“truffle test”时出现以下错误：

Answer 1

如果没有 .sol 合同中的函数，我不能 100% 确定，但是您的 Approval 事件可能在您的 accept 方法中错误地发出。

看看在此处的第二个示例中如何使用 accept 函数： https://docs.soliditylang.org/en/v0.8.1/types.html?highlight=approve#mapping-types

emit Approval(owner, spender, amount);