Node.js 18.x 开始支持内置单元测试

单元测试很重要，很多新兴的编程语言都是会内置对应的能力，但 Node.js 这块一直都是由社区来实现，前端同学耳熟能详的 Test Runner 有 Mocha、Jest。

2022年04月19日正式发布的 Node.js 18.x ，终于，官方支持了 Test 能力。Fetch API 也被集成到这个版本中了。测试 API 接口在一定程度上代替 SuperTest 了。

代码：

import test from 'node:test';
import assert from 'assert/strict';

// 等价于 describe()
test('asynchronous passing test', async () => {
  const res = await fetch('https://nodejs.org/api/documentation.json');
  assert(res.ok);
});

test('multi level test', async (t) => {
  // 等价于 it()
  await t.test('subtest 1', (t) => {
    assert.strictEqual(1, 1);
  });

  await t.test('subtest 2', (t) => {
    assert.strictEqual(2, 2);
  });
});

// 等价于 describe.skip() / it.skip()
test('skip option', { skip: true }, () => {});

// 等价于 describe.only() / it.only()
test('only option', { only: true }, () => {});

接口单元测试：

const assert = require('node:assert/strict');
const test = require('node:test');

const host = 'http://127.0.0.1:3000';
const headers = new Headers();
headers.append('Content-Type', 'application/json');

test('auth', async function (t) {
  await t.test('required account work fine with undefined', async () => {
    let url = host + '/v1/auth/login';
    let payload = { password:'123456'};

    let response = await fetch(url,{ method:'POST', headers, body: JSON.stringify(payload)});
    let json = await response.json();
    assert.deepEqual(json, { error: 'account is required' });
  });
  
  await t.test('incorrect username or password', async () => {
    let url = host + '/v1/auth/login';
    let payload = { account:'test@qq.com', password:'123456' };
  
    let response = await fetch(url,{ method:'POST', headers, body: JSON.stringify(payload)});
    let json = await response.json();
    assert.deepEqual(json, { error: 'incorrect username or password' });
  });


});

之前单元测试的方法：

https://javascript.net.cn/articles/865

https://javascript.net.cn/articles/864

https://javascript.net.cn/articles/770

https://javascript.net.cn/articles/581

修改时间 2024-05-28

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