Jest 是一个流行的 JavaScript 测试框架,它可以轻松地为 JavaScript 代码编写单元测试和集成测试。Jest 提供了丰富的功能,如自动模拟、快照测试、代码覆盖率等,使得开发人员能够更轻松地编写和维护测试用例。 Jest DOM 是一个 Jest 的扩展库,它提供了一组针对 DOM 元素的自定义匹配器。这些匹配器可以帮助你更
Addjest-domto the plugins section of your.eslintrc.jsconfiguration file. You can omit theeslint-plugin-prefix: module.exports={plugins:["jest-dom"],rules:{// your configuration},}; Then configure the rules you want to use under the rules section. ...
npm install --save-dev @jest library/jest-dom 这将在你的项目中安装'@jest library/jest-dom'包,并将其添加到项目的开发依赖中。 安装完成后,你可以在你的代码中引入'@jest library/jest-dom'。根据你使用的具体编程语言和框架,引入的方式会有所不同。
Import@testing-library/jest-domonce (for instance in yourtests setup file) and you're good to go: // In your own jest-setup.js (or any other name)import'@testing-library/jest-dom'// In jest.config.js add (if you haven't already)setupFilesAfterEnv:['<rootDir>/jest-setup.js'] Wit...
Jest是一个流行的JavaScript测试框架,而jsdom是一个用于模拟浏览器环境的库。通过使用jest配置jsdom,我们可以在测试中模拟浏览器环境,以便进行前端代码的单元测试。 要配置jes...
jest-domCustom jest matchers to test the state of the DOMThe problemYou want to use jest to write tests that assert various things about the state of a DOM. As part of that goal, you want to avoid all the repetitive patterns that arise in doing so. Checking for an element's ...
Jest是目前前端工程化下单元测试火热的技术栈,而Enzyme的支持提供了Jest测试React业务、组件的能力,下面来介绍一下React组件测试的一些实际场景。 1. 测试依赖包 复制 "enzyme":"^3.11.0","enzyme-adapter-react-16":"^1.15.2","enzyme-to-json":"^3.3.5","jest":"^28.1.1","jest-less-loader":"^0.1...
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npm install --no-audit --save @testing-library/jest-dom@^5.14.1 这条命令会安装指定版本的@testing-library/jest-dom库,并且由于使用了--no-audit选项,npm将不会进行安全审计。--save选项会将这个库添加到项目的package.json文件的dependencies部分,这样其他开发者或未来的你能够清楚地知道项目依赖了哪些库。
The function that is being tested will add an event listener on the #button DOM element, so we have to set up our DOM correctly for the test. Jest comes with jsdom which will simulate a DOM environment as if you were in the browser. What this means is that every DOM API that we ...