我能够使用Jest测试多个文件，但我不知道如何测试单个文件。
我有:
执行npm install jest-cli——save-dev命令 更新包。Json: '{…"scripts": {"test": "jest"}…｝ 编写了许多测试。
运行npm测试可以正常工作(目前运行14个测试)。
如何测试单个文件，例如test app/foo/__tests__/bar.spec.js?
我已经尝试运行npm test app/foo/__tests__/bar.spec.js(从项目根)，但我得到以下错误:
npm犯错!错误:ENOENT，打开'/node_modules/app/foo/tests/bar.spec.js/package.json'
当前回答
来自Jest文档:
"scripts": {
"test": "jest path/to/my-test.js"
}
使用
npm run test
其他回答
不需要传递完整的路径。只需使用正则表达式模式。
看到——testLocationInResults。
yarn jest --testNamePattern my_test_name
yarn jest -t=auth
yarn jest -t component # This will test all whose test name contains `component`
yarn jest --testPathPattern filename # This will match the file path
yarn jest filename # This will match the file path, the same with above
你可以使用npm test的文件名——
npm test -- fileName.jsx
我们在Angular中使用了nrwl-nx。在这种情况下，我们可以使用这个命令:
npm test <ng-project> -- --testFile "file-name-part"
注:
npm test will run the test script specified in package.json: "test": "ng test" --: tells npm to pass the following parameters to the test script (instead of consuming them) Thus the rest of the cmd will be passed to ng test <ng-project> is the name of a project in angular.json when you omit this parameter, the "defaultProject" (specified in angular.json) will be used (so you must specify it, when the test is not in your default project) Next we must check which builder is used: In angular.json navigate to "project" - "<ng-project>" - "architect" - "test" and check the "builder", which in our case is: "@nrwl/jest:jest" Now that we know the builder, we need to find the available cmd-line parameters On the command line, run npm test <ng-project> -- --help to see all available options Or check the online documentation One of the options is --testFile which is used here
如果你用的是纱线，就这样做
yarn test nameofthefile
eg:
yarn test file.test.js
“test”： “jest api/ds_server/ds_server.test.js”
