import LoggerService from '../LoggerService ';

describe('Method called****', () => {
  it('00000000', () => {
    const logEvent = jest.spyOn(LoggerService, 'logEvent');
    expect(logEvent).toBeDefined();
  });
});

用法:

npm test -- __tests__/LoggerService.test.ts -t '00000000'

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

在Angular和Jest中，你可以把它添加到文件包中。“scripts”下的Json:

"test:debug": "node --inspect-brk ./node_modules/jest/bin/jest.js --runInBand"

然后，要为特定文件运行单元测试，可以在终端中写入此命令

npm run test:debug modules/myModule/someTest.spec.ts

如果你用的是纱线，就这样做

yarn test nameofthefile

eg:

yarn test file.test.js

这就是如何在不重新启动测试的情况下动态地运行特定文件上的测试。

我的React项目创建为create-react-app。

所以它会监视测试的变化，当我做出改变时自动运行测试。

这就是我在终端中看到的测试结果:

Test Suites: 16 passed, 16 total
Tests:       98 passed, 98 total
Snapshots:   0 total
Time:        5.048s
Ran all test suites.

Watch Usage: Press w to show more.

按W

Watch Usage
 › Press f to run only failed tests.
 › Press o to only run tests related to changed files.
 › Press q to quit watch mode.
 › Press p to filter by a filename regex pattern.
 › Press t to filter by a test name regex pattern.
 › Press Enter to trigger a test run.

然后按P

Pattern Mode Usage
 › Press Esc to exit pattern mode.
 › Press Enter to filter by a filenames regex pattern.

 pattern ›

 Start typing to filter by a filename regex pattern.

这是在我想运行'Login'文件夹中的'index.es6.js'文件之后:

Pattern Mode Usage
 › Press Esc to exit pattern mode.
 › Press Enter to filter by a filenames regex pattern.

 pattern › login/index

 Pattern matches 1 file
 › src/containers/Login/index.es6.test.js

这就是我在特定文件上运行测试的方法。

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