如何编写Jest配置文件 [英] How to write a Jest configuration file

问题描述

我试图将配置文件传递给Jest，以便仅从给定目录运行测试.

I am trying to pass along a configuration file to Jest in order to run tests only from a given directory.

根据文档，您可以使用config.testPathDirs: https://facebook.github.io/jest/docs/api.html#config-testpathdirs-array-string ，您可以调用jest --config=<config-file>.

According to documentation, you can use config.testPathDirs: https://facebook.github.io/jest/docs/api.html#config-testpathdirs-array-string and you can call jest --config=<config-file>.

不幸的是，文档中没有包含有关配置文件外观的任何描述.

Unfortunately the documentation doesn't include any description of how the configuration file should look like.

我在jest-config.js文件中尝试了这两个选项:

I tried both these options in a jest-config.js file:

testPathDirs = ['coredata/src'];

和

config.testPathDirs(['coredata/src']);

并运行:

$ jest --config=jest-config.js

...但是我遇到这种类型的错误:

...but I get this type of error:

$ jest --config=jest-config.js
Using Jest CLI v0.4.0
Failed with unexpected error.

/Users/carles/dev/azazo/coredata/node_modules/jest-cli/src/jest.js:179
      throw error;
            ^
SyntaxError: Unexpected token c
    at Object.parse (native)
    at /Users/carles/dev/azazo/coredata/node_modules/jest-cli/src/lib/utils.js:291:23
    at _fulfilled (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:798:54)
    at self.promiseDispatch.done (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:827:30)
    at Promise.promise.promiseDispatch (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:760:13)
    at /Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:574:44
    at flush (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:108:17)
    at process._tickCallback (node.js:419:13)

推荐答案

我发现配置文件是JSON.

I figured out that the config file is JSON.

{
  "testPathDirs": ["coredata/src"]
}

不幸的是，我在文档中找不到关于此的任何提示.

Unfortunately I found nowhere in the documentation a hint about this.

这篇关于如何编写Jest配置文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！