// shared-hooks.js
module.exports = {
  commonBefore: function() {
    // 初始化代码
    console.log('Running common before hook');
  },
  commonAfter: function() {
    // 清理代码
    console.log('Running common after hook');
  }
};

// test1.js
const hooks = require('./shared-hooks');

describe('Test Suite 1', function() {
  before(hooks.commonBefore);
  after(hooks.commonAfter);
  
  it('should do something', function() {
    // 测试代码
  });
});

// test2.js
const hooks = require('./shared-hooks');

describe('Test Suite 2', function() {
  before(hooks.commonBefore);
  after(hooks.commonAfter);
  
  it('should do something else', function() {
    // 测试代码
  });
});

// test/helpers.js
before(function() {
  // 这个钩子会在所有测试之前运行
});

after(function() {
  // 这个钩子会在所有测试之后运行
});

describe('Common Setup', function() {
  before(function() {
    // 共享的before代码
  });
  
  after(function() {
    // 共享的after代码
  });
  
  describe('Test Suite 1', function() {
    it('test 1', function() { /* ... */ });
  });
  
  describe('Test Suite 2', function() {
    it('test 2', function() { /* ... */ });
  });
});

before(function() {
  return new Promise(resolve => {
    // 异步初始化
    setTimeout(resolve, 1000);
  });
});