Jest是Facebook开源的一个前端测试框架,主要用于React和React Native的单元测试,已被集成在create-react-app中。Jest特点: 易用性:基于Jasmine,提供断言库,支持多种测试风格 适应性:Jest是模块化、可扩展和可配置的 沙箱和快照:Jest内置了JSDOM,能够模拟浏览器环境,并且并行执行 快照测试:Jest能够对React组件树进行序...
那个时候，觉得测试就是写 test case，写断言，跑测试，以及查看 test case 的 coverage。整个流程和写...
常见的断言库有 Should.js, Chai.js 等。 测试用例 test case 为某个特殊目标而编制的一组测试输入、执行条件以及预期结果,以便测试某个程序路径或核实是否满足某个特定需求。 一般的形式为: it('should ...', function() { ... expect(sth).toEqual(sth); }); 测试套件 test suite 通常把一组相关的...
module.exports={presets:[['@babel/preset-env',{targets:{node:'current',},},],'@babel/preset-react',// Adds support for JSX],plugins:[],}; c) Create jest.config.js file at the root of the project: module.exports={testEnvironment:"jsdom",transform:{'^.+\\.(js|jsx|ts|tsx)$'...
await screen.findByText('Test Data'); // 断言数据已经被正确渲染 expect(screen.getByText('Test Data')).toBeInTheDocument(); }); 在上述示例中,我们使用了React-Query的QueryClientProvider来包装被测试的组件。然后,我们使用render函数将组件渲染到测试环境中。通过使用screen对象和一些查询方法(如fin...
mock react-intl or @edx/frontend-platform/i18n (preferably in setupTest.js jest.mock('@edx/frontend-platform/i18n',()=>({formatMessage:jest.requireActual('@edx/react-unit-test-utils').formatMessage,})); import for validation against shallow renders. ...
https://github.com/mui/material-ui/blob/next/packages/mui-material/src/Autocomplete/Autocomplete.test.js#L179 Context Autocomplete React Jest unit testing for code coverage. Your environment "@mui/base": "5.0.0-beta.40", "@mui/icons-material": "^5.16.4", "@mui/material": "^5.16.4",...
{"name": "example-karma-jasmine-webapck-test-setup","description": "React Test Setup with Karma/Jasmine/Webpack","scripts": {"test": "karma start --single-run --browsers PhantomJS"},"devDependencies": {"babel": "^6.5.2","babel-core": "^6.5.2","babel-eslint": "^5.0.0","babel...
test: import Reactfrom"react"; import ReactDOMfrom"react-dom"; import toJSONfrom"enzyme-to-json"; import { mount }from"enzyme"; import"./enzymeSetup"; import Counterfrom"./Counter"; it("Calls the Render Prop function", () =>{let renderFn= jest.fn().mockReturnValue(null);constwrapper...
+ const [data, setData] = useState<string>('test'); const getData = (): Promise<any> => { return fetch('https://jsonplaceholder.typicode.com/todos/1'); }; React.useEffect(() => { const func = async () => { const data = await getData(); ...