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',() => {});

Jest文档建议如下:

如果测试失败，首先要检查的事情之一应该是 当测试是唯一运行的测试时，测试是否失败。在开玩笑 只运行一个测试很简单——只是临时更改该测试 命令到test.only

test.only('this will be the only test that runs', () => {
   expect(true).toBe(false);
});

or

it.only('this will be the only test that runs', () => {
   expect(true).toBe(false);
});

您还可以使用f或x来集中或排除一个测试。例如

fit('only this test will run', () => {
   expect(true).toBe(false);
});

it('this test will not run', () => {
   expect(true).toBe(false);
});

xit('this test will be ignored', () => {
   expect(true).toBe(false);
});

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

只是一个小插件，因为如果使用。/node_modules/.bin/jest -i…或者只是开玩笑-我…或者NPM测试-我…

如果你在全局安装了jest(如npm install -g jest)，那么只调用jest就可以了，这是一种不太干净的处理依赖关系的方式 如果Jest只安装在包的本地，并且想调用Jest脚本而不需要绕道npm脚本，你可以使用npx Jest -i…=>这正是NPX的目的。它可以节省编写。/node_modules/.bin/....的时间

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.