describe/it 语法

运行测试也可以使用 describe 来声明套件和 it 来声明测试。 套件用于将相关测试组织和分组在一起。 it 是 test 的别名，除了没有通过测试上下文，因为嵌套是使用套件完成的。

describe('A thing', () => {
  it('should work', () => {
    assert.strictEqual(1, 1);
  });

  it('should be ok', () => {
    assert.strictEqual(2, 2);
  });

  describe('a nested thing', () => {
    it('should work', () => {
      assert.strictEqual(3, 3);
    });
  });
});

describe 和 it 是从 node:test 模块导入的。

import { describe, it } from 'node:test';const { describe, it } = require('node:test');

Running tests can also be done using describe to declare a suite and it to declare a test. A suite is used to organize and group related tests together. it is an alias for test, except there is no test context passed, since nesting is done using suites.

describe('A thing', () => {
  it('should work', () => {
    assert.strictEqual(1, 1);
  });

  it('should be ok', () => {
    assert.strictEqual(2, 2);
  });

  describe('a nested thing', () => {
    it('should work', () => {
      assert.strictEqual(3, 3);
    });
  });
});

describe and it are imported from the node:test module.

import { describe, it } from 'node:test';const { describe, it } = require('node:test');