Unit and Snapshot Testing ​

via Jest

The sku test command will invoke Jest, running any tests in files named *.test.js, *.spec.js or in a __tests__ folder.

Since sku uses Jest as a testing framework, you can read the Jest documentation for more information on writing compatible tests.

NOTE

sku will forward all command line args to jest.

Example running tests in watch mode:

sh
$ sku test --watch

If you need to set up your test framework, you can provide a setupTests script in your config:

ts
export default {
  setupTests: 'src/setupTests.ts',
} satisfies SkuConfig;

For example, if you're using React Testing Library and wish to use the custom jest matchers provided by @testing-library/jest-dom, your setupTests script would look like this:

ts
import '@testing-library/jest-dom';

sku's Jest configuration can also be used as a preset:

js
/** @type {import('jest').Config} */
module.exports = {
  preset: 'sku',
};

This enables debugging tests in VS Code using the Jest extension, by following the instructions in the Jest documentation.