我想使用TypeScript在React应用程序中使用Jest Enzyme测试组件。我遵循了Jest网站上的说明,但出现了以下错误:
我希望测试能够通过,因为测试组件包含
我可以测试一些函数,没有任何问题,但是当我使用一个组件时,就会出现错误。这是文件package.json中的Jest配置:SyntaxError: Unexpected token <
"jest": {
"transform": {
"^.+\\.tsx?$": "ts-jest"
},
"testMatch": ["**/__tests__/*.(ts|tsx)"],
"snapshotSerializers": ["enzyme-to-json/serializer"],
"setupFilesAfterEnv": ["<rootDir>/src/setupEnzyme.ts"],
"unmockedModulePathPatterns": ["node_modules/react/", "node_modules/enzyme/"]
}
酶配置
import { configure } from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
configure({ adapter: new Adapter() });
export default class TesComponent extends Component {
render(){
return (
<div>test</div>
)
}
}
import { shallow } from 'enzyme'
import TestCompoenent from '../TestComponent'
test('component testing', () => {
const component = shallow(<TestCompoenent />)
expect(component.contains(<div>test</div>)).toBeTruthy()
})
这是错误:
Jest encountered an unexpected token
This usually means that you are trying to import a file which Jest cannot parse, e.g., it's not plain JavaScript.
By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules".
Here's what you can do:
• To have some of your "node_modules" files transformed, you can specify a custom "transformIgnorePatterns" in your config.
• If you need a custom transformation specify a "transform" option in your config.
• If you simply want to mock your non-JS modules (e.g. binary assets) you can stub them out with the "moduleNameMapper" config option.
You'll find more details and examples of these config options in the docs:
https://jestjs.io/docs/en/configuration.html
Details:
/home/user/Documents/local-platform/frontend/src/pages/__tests__/settigs.test.tsx:9
var component = enzyme_1.shallow(<TestComponent_1.default />);
^
SyntaxError: Unexpected token <
at ScriptTransformer._transformAndBuildScript (node_modules/@jest/transform/build/ScriptTransformer.js:471:17)
at ScriptTransformer.transform (node_modules/@jest/transform/build/ScriptTransformer.js:513:25)
我希望测试能够通过,因为测试组件包含
<div>test</div>
。
TestComponent
组件。 - ravibagul91jest --clearCache
- ravibagul91TesComponent
”,少了个“t”(export default class TesComponent
),另一行代码写着“TestCompoenent
”,多了一个“e”(import TestCompoenent from '../TestComponent'
),最后还有一行是“TestComponent
”。这到底是哪一个? - Peter Mortensen