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react-code-dataset / next.js /test /e2e /app-dir /app-client-cache /client-cache.defaults.test.ts
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import { nextTestSetup } from 'e2e-utils'
import { check, retry } from 'next-test-utils'
import { Playwright } from 'next-webdriver'
import {
browserConfigWithFixedTime,
createRequestsListener,
fastForwardTo,
getPathname,
} from './test-utils'
import path from 'path'
describe('app dir client cache semantics (default semantics)', () => {
const { next, isNextDev } = nextTestSetup({
files: path.join(__dirname, 'fixtures', 'regular'),
})
if (isNextDev) {
// dev doesn't support prefetch={true}, so this just performs a basic test to make sure data is reused for 30s
it('should return fresh data every navigation', async () => {
let browser = await next.browser('/', browserConfigWithFixedTime)
// navigate to prefetch-auto page
await browser.elementByCss('[href="/1"]').click()
let initialNumber = await browser.elementById('random-number').text()
// Navigate back to the index, and then back to the prefetch-auto page
await browser.elementByCss('[href="/"]').click()
await browser.eval(fastForwardTo, 5 * 1000)
await browser.elementByCss('[href="/1"]').click()
let newNumber = await browser.elementById('random-number').text()
expect(newNumber).not.toBe(initialNumber)
})
} else {
describe('prefetch={true}', () => {
let browser: Playwright
beforeEach(async () => {
browser = await next.browser('/', browserConfigWithFixedTime)
})
it('should prefetch the full page', async () => {
const { getRequests, clearRequests } =
await createRequestsListener(browser)
await check(() => {
return getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/0' && !didPartialPrefetch
)
? 'success'
: 'fail'
}, 'success')
clearRequests()
await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
expect(
getRequests().every(([url]) => getPathname(url) !== '/0')
).toEqual(true)
})
it('should re-use the cache for the full page, only for 5 mins', async () => {
const randomNumber = await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
.text()
await browser.elementByCss('[href="/"]').click()
const number = await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(number).toBe(randomNumber)
await browser.eval(fastForwardTo, 5 * 60 * 1000)
await browser.elementByCss('[href="/"]').click()
const newNumber = await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(newNumber).not.toBe(randomNumber)
})
it('should prefetch again after 5 mins if the link is visible again', async () => {
const { getRequests, clearRequests } =
await createRequestsListener(browser)
await check(() => {
return getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/0' && !didPartialPrefetch
)
? 'success'
: 'fail'
}, 'success')
const randomNumber = await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
.text()
await browser.eval(fastForwardTo, 5 * 60 * 1000)
clearRequests()
await browser.elementByCss('[href="/"]').click()
await check(() => {
return getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/0' && !didPartialPrefetch
)
? 'success'
: 'fail'
}, 'success')
const number = await browser
.elementByCss('[href="/0?timeout=0"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(number).not.toBe(randomNumber)
})
})
describe('prefetch={false}', () => {
let browser: Playwright
beforeEach(async () => {
browser = await next.browser('/', browserConfigWithFixedTime)
})
it('should not prefetch the page at all', async () => {
const { getRequests } = await createRequestsListener(browser)
await browser
.elementByCss('[href="/2"]')
.click()
.waitForElementByCss('#random-number')
expect(
getRequests().filter(([url]) => getPathname(url) === '/2')
).toHaveLength(1)
expect(
getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/2' && didPartialPrefetch
)
).toBe(false)
})
it('should not re-use the page segment cache', async () => {
const randomNumber = await browser
.elementByCss('[href="/2"]')
.click()
.waitForElementByCss('#random-number')
.text()
await browser.elementByCss('[href="/"]').click()
const number = await browser
.elementByCss('[href="/2"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(number).not.toBe(randomNumber)
await browser.eval(fastForwardTo, 30 * 1000)
await browser.elementByCss('[href="/"]').click()
const newNumber = await browser
.elementByCss('[href="/2"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(newNumber).not.toBe(randomNumber)
})
})
describe('prefetch={undefined} - default', () => {
let browser: Playwright
beforeEach(async () => {
browser = await next.browser('/', browserConfigWithFixedTime)
})
it('should prefetch partially a dynamic page', async () => {
const { getRequests, clearRequests } =
await createRequestsListener(browser)
await check(() => {
return getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/1' && didPartialPrefetch
)
? 'success'
: 'fail'
}, 'success')
clearRequests()
await browser
.elementByCss('[href="/1"]')
.click()
.waitForElementByCss('#random-number')
expect(
getRequests().some(
([url, didPartialPrefetch]) =>
getPathname(url) === '/1' && !didPartialPrefetch
)
).toBe(true)
})
it('should not re-use the page segment cache', async () => {
const randomNumber = await browser
.elementByCss('[href="/1"]')
.click()
.waitForElementByCss('#random-number')
.text()
await browser.elementByCss('[href="/"]').click()
const number = await browser
.elementByCss('[href="/1"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(number).not.toBe(randomNumber)
await browser.eval(fastForwardTo, 5 * 1000)
await browser.elementByCss('[href="/"]').click()
const newNumber = await browser
.elementByCss('[href="/1"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(newNumber).not.toBe(randomNumber)
await browser.eval(fastForwardTo, 30 * 1000)
await browser.elementByCss('[href="/"]').click()
const newNumber2 = await browser
.elementByCss('[href="/1"]')
.click()
.waitForElementByCss('#random-number')
.text()
expect(newNumber2).not.toBe(newNumber)
})
it('should refetch the full page after 5 mins', async () => {
const randomLoadingNumber = await browser
.elementByCss('[href="/1?timeout=1000"]')
.click()
.waitForElementByCss('#loading')
.text()
const randomNumber = await browser
.waitForElementByCss('#random-number')
.text()
await browser.eval(fastForwardTo, 5 * 60 * 1000)
await browser
.elementByCss('[href="/"]')
.click()
.waitForElementByCss('[href="/1?timeout=1000"]')
const newLoadingNumber = await browser
.elementByCss('[href="/1?timeout=1000"]')
.click()
.waitForElementByCss('#loading')
.text()
const newNumber = await browser
.waitForElementByCss('#random-number')
.text()
expect(newLoadingNumber).not.toBe(randomLoadingNumber)
expect(newNumber).not.toBe(randomNumber)
})
it('should respect a loading boundary that returns `null`', async () => {
await browser.elementByCss('[href="/null-loading"]').click()
// the page content should disappear immediately
await retry(async () => {
expect(
await browser.hasElementByCssSelector('[href="/null-loading"]')
).toBe(false)
})
// the root layout should still be visible
expect(await browser.hasElementByCssSelector('#root-layout')).toBe(true)
// the dynamic content should eventually appear
await browser.waitForElementByCss('#random-number')
expect(await browser.hasElementByCssSelector('#random-number')).toBe(
true
)
})
})
it('should renew the initial seeded data after expiration time', async () => {
const browser = await next.browser(
'/without-loading/1',
browserConfigWithFixedTime
)
const initialNumber = await browser.elementById('random-number').text()
// Expire the cache
await browser.eval(fastForwardTo, 30 * 1000)
await browser.elementByCss('[href="/without-loading"]').click()
await browser.elementByCss('[href="/without-loading/1"]').click()
const newNumber = await browser.elementById('random-number').text()
// The number should be different, as the seeded data has expired after 30s
expect(newNumber).not.toBe(initialNumber)
})
}
})