如何使用mocha & chai和sinon TDD测试被调用或不调用的类？

npm install mocha chai sinon --save-dev

const chai = require('chai');
const expect = chai.expect;
const sinon = require('sinon');

const MyClass = require('./MyClass'); // 要测试的类

describe('MyClass', () => {
  it('should call someMethod', () => {
    const myObject = new MyClass();

    const someMethodStub = sinon.stub(myObject, 'someMethod');

    myObject.doSomething();

    expect(someMethodStub.calledOnce).to.be.true; // 验证方法被调用一次

    someMethodStub.restore(); // 恢复原始方法
  });

  it('should not call someMethod', () => {
    const myObject = new MyClass();

    const someMethodStub = sinon.stub(myObject, 'someMethod');

    myObject.doSomethingElse();

    expect(someMethodStub.called).to.be.false; // 验证方法未被调用

    someMethodStub.restore(); // 恢复原始方法
  });
});