Jest 和React Testing Library (RTL) 是前端开发中用于测试 React 应用的首选工具。Jest 是一个功能丰富的JavaScript测试框架,而React Testing Library 是一种提倡以用户角度编写测试的库,它鼓励测试组件的行为而不是内部实现细节。 安装和配置 首先,确保你已经安装了react, react-dom, jest, @testing-library/react...
// hidden-message.jsimport*asReactfrom'react'// NOTE: React Testing Library works well with React Hooks and classes.// Your tests will be the same regardless of how you write your components.functionHiddenMessage({children}){const[showMessage,setShowMessage]=React.useState(false)return(Show Messa...
React-Testing-Library入门旨在引导开发者高效地编写React组件测试。本文深入探讨了测试在React开发中的重要性,强调了自动化测试对于确保应用稳定性和质量的价值。引入的React-Testing-Library库以其简洁的API、专注于组件级别的测试以及对React库用法的原生支持,显著提高了测试的可读性和维护性。文章从基础概念、安装方法,...
The fireEvent utility in React Testing Library supports all the events that you regularly use in the web (change, click, etc.). Let’s see how we can test our change event handler with an input. Component: {isValid ? null :The number is invalid} As we can see, the input has a 'o...
通过create-react-app创建的应用,当我们执行Npm test的时候,会自动执行/src/App.test.js 可以看到App.test.js的逻辑如下: import { render, screen } from '@testing-library/react';import App from './App'; test('renders learn react link', () => { ...
下面让我们看一个简单的计数器的例子,以及两个相应的测试:第一个是使用Enzyme编写的,第二个是使用React Testing Library编写的。 counter.js // counter.js import React from "react"; class Counter extends React.Component { state = { count: 0 }; ...
如何使用 react-testing-library 测试 react-select 应用程序.js import React, { Component } from "react"; import Select from "react-select"; const SELECT_OPTIONS = ["FOO", "BAR"].map(e => { return { value: e, label: e }; });...
与Jest 相比,React Testing Library 是一个测试 React 组件的测试库。另一个热门的测试库是之前提到的 Enzyme。下面我们会学习使用 React Testing Library 来测试 React 组件。 RTL:渲染组件 在这个章节,你会学习到怎么通过 RTL 渲染 React 组件。我们会使用 str/App.js 文件下的 App function component: ...
The fireEvent utility in React Testing Library supports all the events that you regularly use in the web (change, click, etc.). Let’s see how we can test our change event handler with an input. Component: AI检测代码解析 {isValid ? null :The number is invalid} 1. 2. 3. 4. 5. ...
If you are interested in testing a custom hook, check out React Hooks Testing Library.NOTE: it is not recommended to test single-use custom hooks in isolation from the components where it's being used. It's better to test the component that's using the hook rather than the hook itself....