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required-server-files-i18n.test.ts
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required-server-files-i18n.test.ts
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import glob from 'glob'
import fs from 'fs-extra'
import cheerio from 'cheerio'
import { join } from 'path'
import { createNext, FileRef } from 'e2e-utils'
import { NextInstance } from 'test/lib/next-modes/base'
import {
check,
fetchViaHTTP,
findPort,
initNextServerScript,
killApp,
renderViaHTTP,
waitFor,
} from 'next-test-utils'
import nodeFetch from 'node-fetch'
describe('should set-up next', () => {
let next: NextInstance
let server
let appPort
let errors = []
let requiredFilesManifest
beforeAll(async () => {
let wasmPkgIsAvailable = false
const res = await nodeFetch(
`https://registry.npmjs.com/@next/swc-wasm-nodejs/-/swc-wasm-nodejs-${
require('next/package.json').version
}.tgz`,
{
method: 'HEAD',
}
)
if (res.status === 200) {
wasmPkgIsAvailable = true
console.warn(`Testing wasm fallback handling`)
}
next = await createNext({
files: {
pages: new FileRef(join(__dirname, 'required-server-files/pages')),
lib: new FileRef(join(__dirname, 'required-server-files/lib')),
'data.txt': new FileRef(
join(__dirname, 'required-server-files/data.txt')
),
},
packageJson: {
scripts: {
build: wasmPkgIsAvailable
? 'rm -rfv node_modules/@next/swc && yarn next build'
: 'yarn next build',
},
},
buildCommand: 'yarn build',
nextConfig: {
i18n: {
locales: ['en', 'fr'],
defaultLocale: 'en',
},
eslint: {
ignoreDuringBuilds: true,
},
output: 'standalone',
async rewrites() {
return [
{
source: '/some-catch-all/:path*',
destination: '/',
},
{
source: '/to-dynamic/:path',
destination: '/dynamic/:path',
},
]
},
},
})
await next.stop()
requiredFilesManifest = JSON.parse(
await next.readFile('.next/required-server-files.json')
)
await fs.move(
join(next.testDir, '.next/standalone'),
join(next.testDir, 'standalone')
)
for (const file of await fs.readdir(next.testDir)) {
if (file !== 'standalone') {
await fs.remove(join(next.testDir, file))
console.log('removed', file)
}
}
const files = glob.sync('**/*', {
cwd: join(next.testDir, 'standalone/.next/server/pages'),
dot: true,
})
for (const file of files) {
if (file.endsWith('.json') || file.endsWith('.html')) {
await fs.remove(join(next.testDir, '.next/server', file))
}
}
const testServer = join(next.testDir, 'standalone/server.js')
await fs.writeFile(
testServer,
(await fs.readFile(testServer, 'utf8'))
.replace('console.error(err)', `console.error('top-level', err)`)
.replace('conf:', 'minimalMode: true,conf:')
)
appPort = await findPort()
server = await initNextServerScript(
testServer,
/Listening on/,
{
...process.env,
PORT: appPort,
},
undefined,
{
cwd: next.testDir,
onStderr(msg) {
if (msg.includes('top-level')) {
errors.push(msg)
}
},
}
)
})
afterAll(async () => {
await next.destroy()
if (server) await killApp(server)
})
it('should not apply locale redirect in minimal mode', async () => {
const res = await fetchViaHTTP(appPort, '/', undefined, {
redirect: 'manual',
headers: {
'accept-language': 'fr',
},
})
expect(res.status).toBe(200)
expect(await res.text()).toContain('index page')
const resCookie = await fetchViaHTTP(appPort, '/', undefined, {
redirect: 'manual',
headers: {
'accept-language': 'en',
cookie: 'NEXT_LOCALE=fr',
},
})
expect(resCookie.status).toBe(200)
expect(await resCookie.text()).toContain('index page')
})
it('should output required-server-files manifest correctly', async () => {
expect(requiredFilesManifest.version).toBe(1)
expect(Array.isArray(requiredFilesManifest.files)).toBe(true)
expect(Array.isArray(requiredFilesManifest.ignore)).toBe(true)
expect(requiredFilesManifest.files.length).toBeGreaterThan(0)
expect(requiredFilesManifest.ignore.length).toBeGreaterThan(0)
expect(typeof requiredFilesManifest.config.configFile).toBe('undefined')
expect(typeof requiredFilesManifest.config.trailingSlash).toBe('boolean')
expect(typeof requiredFilesManifest.appDir).toBe('string')
})
it('should set correct SWR headers with notFound gsp', async () => {
await next.patchFile('standalone/data.txt', 'show')
const res = await fetchViaHTTP(appPort, '/gsp', undefined, {
redirect: 'manual ',
})
expect(res.status).toBe(200)
expect(res.headers.get('cache-control')).toBe(
's-maxage=1, stale-while-revalidate'
)
await waitFor(2000)
await next.patchFile('standalone/data.txt', 'hide')
const res2 = await fetchViaHTTP(appPort, '/gsp', undefined, {
redirect: 'manual ',
})
expect(res2.status).toBe(404)
expect(res2.headers.get('cache-control')).toBe(
's-maxage=1, stale-while-revalidate'
)
})
it('should set correct SWR headers with notFound gssp', async () => {
await next.patchFile('standalone/data.txt', 'show')
const res = await fetchViaHTTP(appPort, '/gssp', undefined, {
redirect: 'manual ',
})
expect(res.status).toBe(200)
expect(res.headers.get('cache-control')).toBe(
's-maxage=1, stale-while-revalidate'
)
await next.patchFile('standalone/data.txt', 'hide')
const res2 = await fetchViaHTTP(appPort, '/gssp', undefined, {
redirect: 'manual ',
})
await next.patchFile('standalone/data.txt', 'show')
expect(res2.status).toBe(404)
expect(res2.headers.get('cache-control')).toBe(
's-maxage=1, stale-while-revalidate'
)
})
it('should render SSR page correctly', async () => {
const html = await renderViaHTTP(appPort, '/gssp')
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#gssp').text()).toBe('getServerSideProps page')
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(appPort, '/gssp')
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#gssp').text()).toBe('getServerSideProps page')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
})
it('should render dynamic SSR page correctly', async () => {
const html = await renderViaHTTP(appPort, '/dynamic/first')
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#dynamic').text()).toBe('dynamic page')
expect($('#slug').text()).toBe('first')
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(appPort, '/dynamic/second')
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#dynamic').text()).toBe('dynamic page')
expect($2('#slug').text()).toBe('second')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
})
it('should render fallback page correctly', async () => {
const html = await renderViaHTTP(appPort, '/fallback/first')
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#fallback').text()).toBe('fallback page')
expect($('#slug').text()).toBe('first')
expect(data.hello).toBe('world')
await waitFor(2000)
const html2 = await renderViaHTTP(appPort, '/fallback/first')
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#fallback').text()).toBe('fallback page')
expect($2('#slug').text()).toBe('first')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
const html3 = await renderViaHTTP(appPort, '/fallback/second')
const $3 = cheerio.load(html3)
const data3 = JSON.parse($3('#props').text())
expect($3('#fallback').text()).toBe('fallback page')
expect($3('#slug').text()).toBe('second')
expect(isNaN(data3.random)).toBe(false)
const { pageProps: data4 } = JSON.parse(
await renderViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/fallback/third.json`
)
)
expect(data4.hello).toBe('world')
expect(data4.slug).toBe('third')
})
it('should render SSR page correctly with x-matched-path', async () => {
const html = await renderViaHTTP(appPort, '/some-other-path', undefined, {
headers: {
'x-matched-path': '/gssp',
},
})
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#gssp').text()).toBe('getServerSideProps page')
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(appPort, '/some-other-path', undefined, {
headers: {
'x-matched-path': '/gssp',
},
})
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#gssp').text()).toBe('getServerSideProps page')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
})
it('should render dynamic SSR page correctly with x-matched-path', async () => {
const html = await renderViaHTTP(
appPort,
'/some-other-path?slug=first',
undefined,
{
headers: {
'x-matched-path': '/dynamic/[slug]',
},
}
)
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#dynamic').text()).toBe('dynamic page')
expect($('#slug').text()).toBe('first')
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(
appPort,
'/some-other-path?slug=second',
undefined,
{
headers: {
'x-matched-path': '/dynamic/[slug]',
},
}
)
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#dynamic').text()).toBe('dynamic page')
expect($2('#slug').text()).toBe('second')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
const html3 = await renderViaHTTP(appPort, '/some-other-path', undefined, {
headers: {
'x-matched-path': '/dynamic/[slug]?slug=%5Bslug%5D.json',
'x-now-route-matches': '1=second&slug=second',
},
})
const $3 = cheerio.load(html3)
const data3 = JSON.parse($3('#props').text())
expect($3('#dynamic').text()).toBe('dynamic page')
expect($3('#slug').text()).toBe('second')
expect(isNaN(data3.random)).toBe(false)
expect(data3.random).not.toBe(data.random)
})
it('should render fallback page correctly with x-matched-path and routes-matches', async () => {
const html = await renderViaHTTP(appPort, '/fallback/first', undefined, {
headers: {
'x-matched-path': '/fallback/first',
'x-now-route-matches': '1=first',
},
})
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#fallback').text()).toBe('fallback page')
expect($('#slug').text()).toBe('first')
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(appPort, `/fallback/[slug]`, undefined, {
headers: {
'x-matched-path': '/fallback/[slug]',
'x-now-route-matches': '1=second',
},
})
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#fallback').text()).toBe('fallback page')
expect($2('#slug').text()).toBe('second')
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
})
it('should return data correctly with x-matched-path', async () => {
const res = await fetchViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/dynamic/first.json?slug=first`,
undefined,
{
headers: {
'x-matched-path': '/dynamic/[slug]',
},
}
)
const { pageProps: data } = await res.json()
expect(data.slug).toBe('first')
expect(data.hello).toBe('world')
const res2 = await fetchViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/fallback/[slug].json`,
undefined,
{
headers: {
'x-matched-path': `/_next/data/${next.buildId}/en/fallback/[slug].json`,
'x-now-route-matches': '1=second',
},
}
)
const { pageProps: data2 } = await res2.json()
expect(data2.slug).toBe('second')
expect(data2.hello).toBe('world')
})
it('should render fallback optional catch-all route correctly with x-matched-path and routes-matches', async () => {
const html = await renderViaHTTP(
appPort,
'/catch-all/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/catch-all/[[...rest]]',
'x-now-route-matches': '',
},
}
)
const $ = cheerio.load(html)
const data = JSON.parse($('#props').text())
expect($('#catch-all').text()).toBe('optional catch-all page')
expect(data.params).toEqual({})
expect(data.hello).toBe('world')
const html2 = await renderViaHTTP(
appPort,
'/catch-all/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/catch-all/[[...rest]]',
'x-now-route-matches': '1=hello&catchAll=hello',
},
}
)
const $2 = cheerio.load(html2)
const data2 = JSON.parse($2('#props').text())
expect($2('#catch-all').text()).toBe('optional catch-all page')
expect(data2.params).toEqual({ rest: ['hello'] })
expect(isNaN(data2.random)).toBe(false)
expect(data2.random).not.toBe(data.random)
const html3 = await renderViaHTTP(
appPort,
'/catch-all/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/catch-all/[[...rest]]',
'x-now-route-matches': '1=hello/world&catchAll=hello/world',
},
}
)
const $3 = cheerio.load(html3)
const data3 = JSON.parse($3('#props').text())
expect($3('#catch-all').text()).toBe('optional catch-all page')
expect(data3.params).toEqual({ rest: ['hello', 'world'] })
expect(isNaN(data3.random)).toBe(false)
expect(data3.random).not.toBe(data.random)
})
it('should return data correctly with x-matched-path for optional catch-all route', async () => {
const res = await fetchViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/catch-all.json`,
undefined,
{
headers: {
'x-matched-path': '/en/catch-all/[[...rest]]',
},
}
)
const { pageProps: data } = await res.json()
expect(data.params).toEqual({})
expect(data.hello).toBe('world')
const res2 = await fetchViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/catch-all/[[...rest]].json`,
undefined,
{
headers: {
'x-matched-path': `/_next/data/${next.buildId}/en/catch-all/[[...rest]].json`,
'x-now-route-matches': '1=hello&rest=hello',
},
}
)
const { pageProps: data2 } = await res2.json()
expect(data2.params).toEqual({ rest: ['hello'] })
expect(data2.hello).toBe('world')
const res3 = await fetchViaHTTP(
appPort,
`/_next/data/${next.buildId}/en/catch-all/[[...rest]].json`,
undefined,
{
headers: {
'x-matched-path': `/_next/data/${next.buildId}/en/catch-all/[[...rest]].json`,
'x-now-route-matches': '1=hello/world&rest=hello/world',
},
}
)
const { pageProps: data3 } = await res3.json()
expect(data3.params).toEqual({ rest: ['hello', 'world'] })
expect(data3.hello).toBe('world')
})
it('should not apply trailingSlash redirect', async () => {
for (const path of [
'/',
'/dynamic/another/',
'/dynamic/another',
'/fallback/first/',
'/fallback/first',
'/fallback/another/',
'/fallback/another',
]) {
const res = await fetchViaHTTP(appPort, path, undefined, {
redirect: 'manual',
})
expect(res.status).toBe(200)
}
})
it('should normalize catch-all rewrite query values correctly', async () => {
const html = await renderViaHTTP(
appPort,
'/some-catch-all/hello/world',
{
path: 'hello/world',
},
{
headers: {
'x-matched-path': '/gssp',
},
}
)
const $ = cheerio.load(html)
expect(JSON.parse($('#router').text()).query.path).toEqual([
'hello',
'world',
])
})
it('should handle bad request correctly with rewrite', async () => {
const res = await fetchViaHTTP(
appPort,
'/to-dynamic/%c0.%c0.',
'?path=%c0.%c0.',
{
headers: {
'x-matched-path': '/dynamic/[slug]',
},
}
)
expect(res.status).toBe(400)
expect(await res.text()).toContain('Bad Request')
})
it('should bubble error correctly for gip page', async () => {
errors = []
const res = await fetchViaHTTP(appPort, '/errors/gip', { crash: '1' })
expect(res.status).toBe(500)
expect(await res.text()).toBe('internal server error')
await check(
() => (errors[0].includes('gip hit an oops') ? 'success' : errors[0]),
'success'
)
})
it('should bubble error correctly for gssp page', async () => {
errors = []
const res = await fetchViaHTTP(appPort, '/errors/gssp', { crash: '1' })
expect(res.status).toBe(500)
expect(await res.text()).toBe('internal server error')
await check(
() => (errors[0].includes('gssp hit an oops') ? 'success' : errors[0]),
'success'
)
})
it('should bubble error correctly for gsp page', async () => {
errors = []
const res = await fetchViaHTTP(appPort, '/errors/gsp/crash')
expect(res.status).toBe(500)
expect(await res.text()).toBe('internal server error')
await check(
() => (errors[0].includes('gsp hit an oops') ? 'success' : errors[0]),
'success'
)
})
it('should bubble error correctly for API page', async () => {
errors = []
const res = await fetchViaHTTP(appPort, '/api/error')
expect(res.status).toBe(500)
expect(await res.text()).toBe('internal server error')
await check(
() =>
errors[0].includes('some error from /api/error')
? 'success'
: errors[0],
'success'
)
})
it('should normalize optional values correctly for SSP page', async () => {
const res = await fetchViaHTTP(
appPort,
'/optional-ssp',
{ rest: '', another: 'value' },
{
headers: {
'x-matched-path': '/optional-ssp/[[...rest]]',
},
}
)
const html = await res.text()
const $ = cheerio.load(html)
const props = JSON.parse($('#props').text())
expect(props.params).toEqual({})
expect(props.query).toEqual({ another: 'value' })
})
it('should normalize optional values correctly for SSG page', async () => {
const res = await fetchViaHTTP(
appPort,
'/en/optional-ssg/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/en/optional-ssg/[[...rest]]',
'x-now-route-matches': 'nextLocale=en&1=en',
},
}
)
const html = await res.text()
const $ = cheerio.load(html)
const props = JSON.parse($('#props').text())
expect(props.params).toEqual({})
})
it('should normalize optional values correctly for nested optional SSG page', async () => {
const res = await fetchViaHTTP(
appPort,
'/en/[slug]/social/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/en/[slug]/social/[[...rest]]',
'x-now-route-matches': 'nextLocale=en&1=en&2=user-123&slug=user-123',
},
}
)
const html = await res.text()
const $ = cheerio.load(html)
const props = JSON.parse($('#props').text())
expect(props.params).toEqual({
slug: 'user-123',
})
expect($('#page').text()).toBe('/[slug]/social/[[...rest]]')
})
it('should normalize optional values correctly for SSG page with encoded slash', async () => {
const res = await fetchViaHTTP(
appPort,
'/optional-ssg/[[...rest]]',
undefined,
{
headers: {
'x-matched-path': '/optional-ssg/[[...rest]]',
'x-now-route-matches':
'1=en%2Fes%2Fhello%252Fworld&rest=en%2Fes%2Fhello%252Fworld',
},
}
)
const html = await res.text()
const $ = cheerio.load(html)
const props = JSON.parse($('#props').text())
expect(props.params).toEqual({
rest: ['en', 'es', 'hello/world'],
})
})
it('should normalize optional values correctly for API page', async () => {
const res = await fetchViaHTTP(
appPort,
'/api/optional',
{ rest: '', another: 'value' },
{
headers: {
'x-matched-path': '/api/optional/[[...rest]]',
},
}
)
const json = await res.json()
expect(json.query).toEqual({ another: 'value' })
expect(json.url).toBe('/api/optional?another=value')
})
it('should match the index page correctly', async () => {
const res = await fetchViaHTTP(appPort, '/', undefined, {
headers: {
'x-matched-path': '/index',
},
redirect: 'manual',
})
const html = await res.text()
const $ = cheerio.load(html)
expect($('#index').text()).toBe('index page')
})
it('should match the root dyanmic page correctly', async () => {
const res = await fetchViaHTTP(appPort, '/slug-1', undefined, {
headers: {
'x-matched-path': '/[slug]',
},
redirect: 'manual',
})
const html = await res.text()
const $ = cheerio.load(html)
expect($('#slug-page').text()).toBe('[slug] page')
})
it('should have the correct asPath for fallback page', async () => {
const res = await fetchViaHTTP(appPort, '/en/fallback/[slug]', undefined, {
headers: {
'x-matched-path': '/en/fallback/[slug]',
'x-now-route-matches': '2=another&slug=another&1=en&nextLocale=en',
},
redirect: 'manual',
})
const html = await res.text()
const $ = cheerio.load(html)
expect($('#fallback').text()).toBe('fallback page')
expect($('#slug').text()).toBe('another')
expect(JSON.parse($('#router').text()).asPath).toBe('/fallback/another')
expect(JSON.parse($('#router').text()).query.slug).toBe('another')
expect(JSON.parse($('#router').text()).locale).toBe('en')
})
it('should have the correct asPath for fallback page locale', async () => {
const res = await fetchViaHTTP(appPort, '/fr/fallback/[slug]', undefined, {
headers: {
'x-matched-path': '/fr/fallback/[slug]',
'x-now-route-matches': '2=another&slug=another&1=fr&nextLocale=fr',
},
redirect: 'manual',
})
const html = await res.text()
const $ = cheerio.load(html)
expect($('#fallback').text()).toBe('fallback page')
expect($('#slug').text()).toBe('another')
expect(JSON.parse($('#router').text()).asPath).toBe('/fallback/another')
expect(JSON.parse($('#router').text()).query.slug).toBe('another')
expect(JSON.parse($('#router').text()).locale).toBe('fr')
})
})