enable-fixtures v0.0.1

enable-fixtures

Enable fixtures (like Vitest, Playwright, or pytest) in Jest.

ATTENTION: This is a proof of concept right now. Use at your own risk.

Setup

Create a setup script with the following:

// content of testSetup.js
import { enableFixtures } from 'enable-fixtures'

enableFixtures(test, { mutate: true })

Then add the setup script to your Jest config's setupFilesAfterEnv. For example, when configuring via package.json:

"jest": {
  "setupFilesAfterEnv": ["<rootDir>/testSetup.js"]
}

Now Jest's global test and it should have a .extend property added to them.

const myTest = test.extend({
  hello: "hello fixtures!",
  loudHello: async ({ hello }, use) => {
    await use(hello.toUpperCase())
  },
})

myTest("fixtures are working", ({ loudHello }) => {
  expect(loudHello).toBe("HELLO FIXTURES!")
})

Usage

enable-fixtures is modeled after Vitest's test context and Playwright's fixtures.

The main difference is that enable-fixtures doesn't provide any default fixtures. Furthermore, enable-fixtures doesn't support Playwright's worker scope, fixtures-options, or timeout. It does, however, support automatic fixtures via Playwright's tuple-like syntax.