文章浏览阅读76次。在测试异步代码时，真实 Promise 的内部状态不可见、兑现时机难以控制，常常导致测试用例依赖真实定时器或网络请求。Sinon 提供的 `sinon.promise ()` 是一个特殊的测试工具：它创建的是一个**真实的 Promise 对象**，但额外暴露了 `status`、`resolvedValue`、`rejectedValue` 三个内部状态属性 ...

本内容遵循CC 4.0 BY-SA版权协议 在JavaScript异步编程领域，Promise已经成为现代前端开发的基石。我第一次接触Promise是在2015年ES6标准发布时，当时回调地狱(callback hell)问题正困扰着整个前端社区。Promise通过链式调用和状态机机制，为异步操作提供了更优雅的解决方案 ...

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Robert's determined!

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