import { createNext, FileRef } from 'e2e-utils' import { NextInstance } from 'e2e-utils' import path from 'path' import execa from 'execa' const appDir = path.join(__dirname, 'app') describe('next/jest', () => { let next: NextInstance beforeAll(async () => { next = await createNext({ skipStart: true, files: { app: new FileRef(path.join(appDir, 'app')), [`tests/index.test.tsx`]: ` import { render, screen } from '@testing-library/react' import Page from '../app/page' it(' renders', () => { render() const logo = screen.getByRole('img') expect(logo).toBeDefined() }) `, 'jest.config.js': new FileRef(path.join(appDir, 'jest.config.js')), }, dependencies: { jest: '29.7.0', 'jest-environment-jsdom': '29.7.0', '@testing-library/react': '15.0.2', '@testing-library/jest-dom': '5.17.0', }, }) }) afterAll(() => next.destroy()) it('Should not throw preload is undefined error', async () => { const { stdout, stderr } = await execa( 'pnpm', ['jest', 'tests/index.test.tsx'], { cwd: next.testDir, reject: false, } ) // Uncaught [TypeError: (0 , _reactdom.preload) is not a function] expect(stdout + stderr).not.toContain('is not a function') }) })