开玩笑嘲笑一个对象 [英] Jest mock an object

问题描述

我需要模拟对象config.js，而不是像正常情况那样模拟函数.我有-

I need to mock an object, config.js, rather than mocking a function as normal. I have -

//config.js . 
export default {
   foo: 'bar'
}

我已经尝试过-

import config from './config';
jest.mock('./config');
config.mockReturnValue({
   foo: 'zed'
})

还-

import config from './config';
jest.mock('./config');
config.mockImplentation(() => ({
   foo: 'zed'
}));

但是它没有嘲笑任何东西，并且我正在正常获取配置文件.

But its not mocking anything, and I am getting the config file as normal.

我在做什么错了?

推荐答案

它只是一个返回对象而不是函数的模拟

Its just a mock that returns the object instead of a function

jest.mock('./config', () => ({ foo: 'zed' }))

或

import config from './config';
config.foo = 'zed'

您遇到的问题是，它仅适用于返回函数的模块

The problem with you approach is that it would only work for modules that return functions

这篇关于开玩笑嘲笑一个对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！