以太坊 Solidity Contract - mocha 超时在 web3.eth.Contract send() 方

Question

我目前正在学习Solidity并尝试构建一个简单的合约。我还在尝试使用 Mocha 框架在部署之前测试智能合约。测试代码如下：

const assert = require("assert");
const ganache = require("ganache-cli");
const Web3 = require("web3");
const { interface, bytecode } = require("../compile");
const provider = ganache.provider();
const web3 = new Web3(provider);
let accounts;
let inbox;
beforeEach(async () => {
  // Get a list of all accounts
  accounts = await web3.eth.getAccounts();
  // Use one of those accounts to deploy the contract
  inbox = await new web3.eth.Contract(JSON.parse(interface))
    .deploy({
      data: bytecode,
      arguments: ["Hi there!"]
    })
    .send({
      from: accounts[0],
      gas: "1000000"
    });
});
describe("Inbox", () => {
  it("deploys a contract", () => {
    console.log(inbox);
  });
});

测试失败并超时：

> mocha
  Inbox
    1) "before each" hook for "deploys a contract"

  0 passing (2s)
  1 failing
  1) "before each" hook for "deploys a contract":
     Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.

我注意到如果我注释掉 send(( 参数，测试就会通过：

// .send({
//   from: accounts[0],
//   gas: "1000000"
// });

所以问题一定是使用这种方法。不确定这是否是异步问题。

Answer 1

我通过将 web3 降级到 1.0.0-beta.37 来解决这个问题。似乎版本 1.0.0-beta.51 有问题。