在最新版本的jest中，您可以以多种方式运行任何单个测试。

fit('only this test will run', () => {});

it.only('only this test will run',() => {});

对于Windows中的VSCode，我在我的启动中使用这些。json文件。注意使用${pathSeparator}来处理Win和Mac中的差异。在调试下拉菜单中选择一个并按F5运行。

 {
  "name": "Debug Selected Jest Test",
  "type": "node",
  "request": "launch",
  "runtimeArgs": ["--inspect-brk", "${workspaceRoot}/node_modules/jest/bin/jest.js", "--runInBand"],
  "args": ["--", "-i", "${fileDirnameBasename}${pathSeparator}${fileBasename} ", "-t", "${selectedText}"],
  "console": "integratedTerminal",
  "internalConsoleOptions": "neverOpen",
  "port": 9229
},
{
  "name": "Debug Named Jest Test",
  "type": "node",
  "request": "launch",
  "runtimeArgs": ["--inspect-brk", "${workspaceRoot}/node_modules/jest/bin/jest.js", "--runInBand"],
  "args": ["--", "-i", "${fileDirnameBasename}${pathSeparator}${fileBasename} ", "-t", "filename.test.js"],
  "console": "integratedTerminal",
  "internalConsoleOptions": "neverOpen",
  "port": 9229
},

以下是我的看法:

./node_modules/.bin/jest --config test/jest-unit-config.json --runInBand src/components/OpenForm/OpenForm.spec.js -t 'show expanded'

注:

./node_modules/.bin/... is a wonderful way, to access the locally installed Jest (or Mocha or...) binary that came with the locally installed package. (Yes, in your npm scripts you can jest with nothing before, but this is handy on command line... (that's also a good start for your debugging config, whichever IDE you are using...) Your project might not have a set of configuration options. But if it does (peek into the scripts in package.json), this is, what you need. --runInBand – as said, don't know about your configuration, but if you concentrate on developing/fixing a single test, you rather do not want to deal with web workers... Yes, you can give the whole, explicit path to your file Optionally, you can use -t to not run all tests in that file, but only a single one (here: the one, that has something with ‘show expanded’ in its name). Same effect can be achieved by glueing .only() into that file.

如果你把jest作为脚本命令运行，比如npm test，你需要使用下面的命令让它工作:

npm test -- -t "fix order test"

开玩笑地说，这是唯一对我有用的东西:

is -- test/unit/name-of-test-file.test.ts

观察

is --watch -- test/unit/name-of-test-file.test.ts

如果有人试图使用joke -t '<testName>'并想知道为什么它不起作用，那么值得注意的是-t参数实际上是一个正则表达式模式，而不是字符串字面量。

如果您的测试名称中没有特殊字符，那么它就会像预期的那样工作(使用来自它的字符串或描述或它们的组合)。

如果您的测试名称确实有特殊字符，如括号，只需用反斜杠转义它们。例如，这样的测试:

it("/ (GET)", () => {
  return request(app.getHttpServer())
    .get("/health")
    .expect(200)
    .expect("Hello World");
});

可以用jest -t "\/ \(GET\)"作为目标。

regex也不需要匹配整个字符串，因此如果您希望基于一致的命名约定运行一个子集，则可以匹配公共部分。