Check SSG Page via Route Lookup (vercel#10971)

packages/next/next-server/server/spr-cache.ts

@@ -11,6 +11,10 @@ const mkdirp = promisify(mkdirpOrig)
 const readFile = promisify(fs.readFile)
 const writeFile = promisify(fs.writeFile)
 
+function toRoute(pathname: string): string {
+  return pathname.replace(/\/$/, '').replace(/\/index$/, '') || '/'
+}
+
 type SprCacheValue = {
   html: string
   pageData: any
@@ -34,6 +38,8 @@ const getSeedPath = (pathname: string, ext: string): string => {
 }
 
 export const calculateRevalidate = (pathname: string): number | false => {
+  pathname = toRoute(pathname)
+
   // in development we don't have a prerender-manifest
   // and default to always revalidating to allow easier debugging
   const curTime = new Date().getTime()

test/integration/prerender-no-revalidate/pages/index.js

@@ -0,0 +1,27 @@
+let runs = 0
+
+export async function getStaticProps() {
+  if (runs++) {
+    throw new Error('GSP was re-run.')
+  }
+
+  return {
+    props: {
+      world: 'world',
+      time: new Date().getTime(),
+      other: Math.random(),
+    },
+  }
+}
+
+const Page = ({ world, time, other }) => {
+  return (
+    <div>
+      <p>hello {world}</p>
+      <span>time: {time}</span>
+      <span>other: {other}</span>
+    </div>
+  )
+}
+
+export default Page

test/integration/prerender-no-revalidate/pages/named.js

@@ -0,0 +1,27 @@
+let runs = 0
+
+export async function getStaticProps() {
+  if (runs++) {
+    throw new Error('GSP was re-run.')
+  }
+
+  return {
+    props: {
+      world: 'world',
+      time: new Date().getTime(),
+      other: Math.random(),
+    },
+  }
+}
+
+const Page = ({ world, time, other }) => {
+  return (
+    <div>
+      <p>hello {world}</p>
+      <span>time: {time}</span>
+      <span>other: {other}</span>
+    </div>
+  )
+}
+
+export default Page

test/integration/prerender-no-revalidate/pages/nested/index.js

@@ -0,0 +1,27 @@
+let runs = 0
+
+export async function getStaticProps() {
+  if (runs++) {
+    throw new Error('GSP was re-run.')
+  }
+
+  return {
+    props: {
+      world: 'world',
+      time: new Date().getTime(),
+      other: Math.random(),
+    },
+  }
+}
+
+const Page = ({ world, time, other }) => {
+  return (
+    <div>
+      <p>hello {world}</p>
+      <span>time: {time}</span>
+      <span>other: {other}</span>
+    </div>
+  )
+}
+
+export default Page

test/integration/prerender-no-revalidate/pages/nested/named.js

@@ -0,0 +1,27 @@
+let runs = 0
+
+export async function getStaticProps() {
+  if (runs++) {
+    throw new Error('GSP was re-run.')
+  }
+
+  return {
+    props: {
+      world: 'world',
+      time: new Date().getTime(),
+      other: Math.random(),
+    },
+  }
+}
+
+const Page = ({ world, time, other }) => {
+  return (
+    <div>
+      <p>hello {world}</p>
+      <span>time: {time}</span>
+      <span>other: {other}</span>
+    </div>
+  )
+}
+
+export default Page

test/integration/prerender-no-revalidate/test/index.test.js

@@ -0,0 +1,129 @@
+/* eslint-env jest */
+/* global jasmine */
+import fs from 'fs-extra'
+import {
+  findPort,
+  killApp,
+  nextBuild,
+  nextStart,
+  renderViaHTTP,
+  waitFor,
+} from 'next-test-utils'
+import { join } from 'path'
+
+jasmine.DEFAULT_TIMEOUT_INTERVAL = 1000 * 60 * 2
+const appDir = join(__dirname, '..')
+const nextConfig = join(appDir, 'next.config.js')
+let app
+let appPort
+let buildId
+let stderr
+
+function runTests(route, routePath, serverless) {
+  it(`[${route}] should not revalidate when set to false`, async () => {
+    const fileName = join(
+      appDir,
+      `.next`,
+      ...(serverless ? ['serverless'] : ['server', 'static', buildId]),
+      `pages/${routePath}.html`
+    )
+    const initialHtml = await renderViaHTTP(appPort, route)
+    const initialFileHtml = await fs.readFile(fileName, 'utf8')
+
+    let newHtml = await renderViaHTTP(appPort, route)
+    expect(initialHtml).toBe(newHtml)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileHtml)
+
+    await waitFor(500)
+
+    newHtml = await renderViaHTTP(appPort, route)
+    expect(initialHtml).toBe(newHtml)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileHtml)
+
+    await waitFor(500)
+
+    newHtml = await renderViaHTTP(appPort, route)
+    expect(initialHtml).toBe(newHtml)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileHtml)
+
+    expect(stderr).not.toContain('GSP was re-run')
+  })
+
+  it(`[${route}] should not revalidate /_next/data when set to false`, async () => {
+    const route = join(`/_next/data/${buildId}`, `${routePath}.json`)
+    const fileName = join(
+      appDir,
+      `.next`,
+      ...(serverless ? ['serverless'] : ['server', 'static', buildId]),
+      `pages/${routePath}.json`
+    )
+
+    const initialData = JSON.parse(await renderViaHTTP(appPort, route))
+    const initialFileJson = await fs.readFile(fileName, 'utf8')
+
+    expect(JSON.parse(await renderViaHTTP(appPort, route))).toEqual(initialData)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileJson)
+    await waitFor(500)
+
+    expect(JSON.parse(await renderViaHTTP(appPort, route))).toEqual(initialData)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileJson)
+    await waitFor(500)
+
+    expect(JSON.parse(await renderViaHTTP(appPort, route))).toEqual(initialData)
+    expect(await fs.readFile(fileName, 'utf8')).toBe(initialFileJson)
+
+    expect(stderr).not.toContain('GSP was re-run')
+  })
+}
+
+describe('SSG Prerender No Revalidate', () => {
+  afterAll(() => fs.remove(nextConfig))
+
+  describe('serverless mode', () => {
+    beforeAll(async () => {
+      await fs.writeFile(
+        nextConfig,
+        `module.exports = { target: 'experimental-serverless-trace' }`,
+        'utf8'
+      )
+      await fs.remove(join(appDir, '.next'))
+      await nextBuild(appDir)
+      appPort = await findPort()
+      stderr = ''
+      app = await nextStart(appDir, appPort, {
+        onStderr: msg => {
+          stderr += msg
+        },
+      })
+      buildId = await fs.readFile(join(appDir, '.next/BUILD_ID'), 'utf8')
+    })
+    afterAll(() => killApp(app))
+
+    runTests('/', '/index', true)
+    runTests('/named', '/named', true)
+    runTests('/nested', '/nested', true)
+    runTests('/nested/named', '/nested/named', true)
+  })
+
+  describe('production mode', () => {
+    beforeAll(async () => {
+      await fs.remove(nextConfig)
+      await fs.remove(join(appDir, '.next'))
+      await nextBuild(appDir, [])
+      appPort = await findPort()
+      stderr = ''
+      app = await nextStart(appDir, appPort, {
+        onStderr: msg => {
+          stderr += msg
+        },
+      })
+      buildId = await fs.readFile(join(appDir, '.next/BUILD_ID'), 'utf8')
+    })
+    afterAll(() => killApp(app))
+
+    runTests('/', '/index')
+    runTests('/named', '/named')
+    runTests('/nested', '/nested')
+    runTests('/nested/named', '/nested/named')
+  })
+})