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switchable-runtime.test.js
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switchable-runtime.test.js
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/* eslint-env jest */
import webdriver from 'next-webdriver'
import { join } from 'path'
import {
check,
findPort,
killApp,
launchApp,
nextBuild,
nextStart,
fetchViaHTTP,
renderViaHTTP,
waitFor,
} from 'next-test-utils'
const appDir = join(__dirname, '../switchable-runtime')
function splitLines(text) {
return text
.split(/\r?\n/g)
.map((str) => str.trim())
.filter(Boolean)
}
async function testRoute(appPort, url, { isStatic, isEdge, isRSC }) {
const html1 = await renderViaHTTP(appPort, url)
const renderedAt1 = +html1.match(/Time: (\d+)/)[1]
expect(html1).toContain(`Runtime: ${isEdge ? 'Edge' : 'Node.js'}`)
const html2 = await renderViaHTTP(appPort, url)
const renderedAt2 = +html2.match(/Time: (\d+)/)[1]
expect(html2).toContain(`Runtime: ${isEdge ? 'Edge' : 'Node.js'}`)
if (isStatic) {
// Should not be re-rendered, some timestamp should be returned.
expect(renderedAt1).toBe(renderedAt2)
} else {
// Should be re-rendered.
expect(renderedAt1).toBeLessThan(renderedAt2)
}
if (isRSC) {
const appServerOccurrence = html1.match(/class="app-server-root"/g) || []
expect(appServerOccurrence.length).toBe(1)
expect(html1).not.toContain('"app-client-root"')
} else {
expect(html1).not.toContain('"app-server-root"')
}
}
describe('Switchable runtime (prod)', () => {
const context = { appDir }
beforeAll(async () => {
context.appPort = await findPort()
const { stdout, stderr } = await nextBuild(context.appDir, [], {
stderr: true,
stdout: true,
})
context.stdout = stdout
context.stderr = stderr
context.server = await nextStart(context.appDir, context.appPort)
})
afterAll(async () => {
await killApp(context.server)
})
it('should build /static as a static page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/static', {
isStatic: true,
isEdge: false,
isRSC: false,
})
})
it('should build /node as a static page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node', {
isStatic: true,
isEdge: false,
isRSC: false,
})
})
it('should build /node-ssr as a dynamic page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node-ssr', {
isStatic: false,
isEdge: false,
isRSC: false,
})
})
it('should build /node-ssg as a static page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node-ssg', {
isStatic: true,
isEdge: false,
isRSC: false,
})
})
it('should build /node-rsc as a static page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node-rsc', {
isStatic: true,
isEdge: false,
isRSC: true,
})
const html = await renderViaHTTP(context.appPort, '/node-rsc')
expect(html).toContain('data-title="node-rsc"')
})
it('should build /node-rsc-ssr as a dynamic page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node-rsc-ssr', {
isStatic: false,
isEdge: false,
isRSC: true,
})
})
it('should build /node-rsc-ssg as a static page with the nodejs runtime', async () => {
await testRoute(context.appPort, '/node-rsc-ssg', {
isStatic: true,
isEdge: false,
isRSC: true,
})
})
it('should build /node-rsc-isr as an isr page with the nodejs runtime', async () => {
const html1 = await renderViaHTTP(context.appPort, '/node-rsc-isr')
const renderedAt1 = +html1.match(/Time: (\d+)/)[1]
expect(html1).toContain('Runtime: Node.js')
const html2 = await renderViaHTTP(context.appPort, '/node-rsc-isr')
const renderedAt2 = +html2.match(/Time: (\d+)/)[1]
expect(html2).toContain('Runtime: Node.js')
expect(renderedAt1).toBe(renderedAt2)
// Trigger a revalidation after 3s.
await waitFor(4000)
await renderViaHTTP(context.appPort, '/node-rsc-isr')
await check(async () => {
const html3 = await renderViaHTTP(context.appPort, '/node-rsc-isr')
const renderedAt3 = +html3.match(/Time: (\d+)/)[1]
return renderedAt2 < renderedAt3
? 'success'
: `${renderedAt2} should be less than ${renderedAt3}`
}, 'success')
})
it('should build /edge as a dynamic page with the edge runtime', async () => {
await testRoute(context.appPort, '/edge', {
isStatic: false,
isEdge: true,
isRSC: false,
})
})
it('should build /edge-rsc as a dynamic page with the edge runtime', async () => {
await testRoute(context.appPort, '/edge-rsc', {
isStatic: false,
isEdge: true,
isRSC: true,
})
})
it('should display correct tree view with page types in terminal', async () => {
const stdoutLines = splitLines(context.stdout).filter((line) =>
/^[┌├└/]/.test(line)
)
const expectedOutputLines = splitLines(`
┌ /_app
├ /_app.server
├ ○ /404
├ ℇ /edge
├ ℇ /edge-rsc
├ ○ /node
├ ● /node-rsc
├ ● /node-rsc-isr
├ ● /node-rsc-ssg
├ λ /node-rsc-ssr
├ ● /node-ssg
├ λ /node-ssr
└ ○ /static
`)
const isMatched = expectedOutputLines.every((line, index) => {
const matched = stdoutLines[index].startsWith(line)
return matched
})
expect(isMatched).toBe(true)
})
it('should prefetch data for static pages', async () => {
const dataRequests = []
const browser = await webdriver(context.appPort, '/node', {
beforePageLoad(page) {
page.on('request', (request) => {
const url = request.url()
if (/\.json$/.test(url)) {
dataRequests.push(url.split('/').pop())
}
})
},
})
await browser.eval('window.beforeNav = 1')
for (const data of [
'node-rsc.json',
'node-rsc-ssg.json',
'node-rsc-isr.json',
'node-ssg.json',
]) {
expect(dataRequests).toContain(data)
}
})
it('should support client side navigation to ssr rsc pages', async () => {
let flightRequest = null
const browser = await webdriver(context.appPort, '/node', {
beforePageLoad(page) {
page.on('request', (request) => {
const url = request.url()
if (/\?__flight__=1/.test(url)) {
flightRequest = url
}
})
},
})
await browser.waitForElementByCss('#link-node-rsc-ssr').click()
expect(await browser.elementByCss('body').text()).toContain(
'This is a SSR RSC page.'
)
expect(flightRequest).toContain('/node-rsc-ssr?__flight__=1')
})
it('should support client side navigation to ssg rsc pages', async () => {
const browser = await webdriver(context.appPort, '/node')
await browser.waitForElementByCss('#link-node-rsc-ssg').click()
expect(await browser.elementByCss('body').text()).toContain(
'This is a SSG RSC page.'
)
})
it('should support client side navigation to static rsc pages', async () => {
const browser = await webdriver(context.appPort, '/node')
await browser.waitForElementByCss('#link-node-rsc').click()
expect(await browser.elementByCss('body').text()).toContain(
'This is a static RSC page.'
)
})
it('should support etag header in the web server', async () => {
const res = await fetchViaHTTP(context.appPort, '/edge', '', {
headers: {
// Make sure the result is static so an etag can be generated.
'User-Agent': 'Googlebot',
},
})
expect(res.headers.get('ETag')).toBeDefined()
})
})
describe('Switchable runtime (dev)', () => {
const context = { appDir }
beforeAll(async () => {
context.appPort = await findPort()
context.server = await launchApp(context.appDir, context.appPort)
})
afterAll(async () => {
await killApp(context.server)
})
it('should support client side navigation to ssr rsc pages', async () => {
let flightRequest = null
const browser = await webdriver(context.appPort, '/node', {
beforePageLoad(page) {
page.on('request', (request) => {
const url = request.url()
if (/\?__flight__=1/.test(url)) {
flightRequest = url
}
})
},
})
await browser
.waitForElementByCss('#link-node-rsc-ssr')
.click()
.waitForElementByCss('.node-rsc-ssr')
expect(await browser.elementByCss('body').text()).toContain(
'This is a SSR RSC page.'
)
expect(flightRequest).toContain('/node-rsc-ssr?__flight__=1')
})
it('should support client side navigation to ssg rsc pages', async () => {
const browser = await webdriver(context.appPort, '/node')
await browser
.waitForElementByCss('#link-node-rsc-ssg')
.click()
.waitForElementByCss('.node-rsc-ssg')
expect(await browser.elementByCss('body').text()).toContain(
'This is a SSG RSC page.'
)
})
it('should support client side navigation to static rsc pages', async () => {
const browser = await webdriver(context.appPort, '/node')
await browser
.waitForElementByCss('#link-node-rsc')
.click()
.waitForElementByCss('.node-rsc')
expect(await browser.elementByCss('body').text()).toContain(
'This is a static RSC page.'
)
})
})