import { nextTestSetup } from 'e2e-utils' import type { Playwright } from 'next-webdriver' const getPathname = (url: string) => { const urlObj = new URL(url) return urlObj.pathname } const createRequestsListener = async (browser: Playwright) => { // wait for network idle await browser.waitForIdleNetwork() let requests = [] browser.on('request', (req) => { requests.push([req.url(), !!req.headers()['next-router-prefetch']]) }) await browser.refresh() return { getRequests: () => requests, clearRequests: () => { requests = [] }, } } describe('app-prefetch-false', () => { const { next, isNextDev } = nextTestSetup({ files: __dirname, }) if (isNextDev) { it.skip('should skip test in development mode', () => {}) } else { it('should avoid double-fetching when optimistic navigation fails', async () => { const browser = await next.browser('/foo') const { getRequests } = await createRequestsListener(browser) await browser.elementByCss('[href="/foo"]').click() await browser.elementByCss('[href="/foo/bar"]').click() console.log('getRequests()', getRequests()) expect( getRequests().filter(([req]) => getPathname(req) === '/foo/bar').length ).toBe(1) }) } })