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index.test.js
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index.test.js
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/* eslint-env jest */
import { join } from 'path'
import fs from 'fs-extra'
import webdriver from 'next-webdriver'
import { fetchViaHTTP, findPort, killApp, renderViaHTTP } from 'next-test-utils'
import {
nextBuild,
nextStart,
nextDev,
appDir,
nativeModuleTestAppDir,
distDir,
documentPage,
appPage,
appServerPage,
error500Page,
nextConfig,
} from './utils'
import css from './css'
import rsc from './rsc'
import streaming from './streaming'
import basic from './basic'
import functions from './functions'
const documentWithGip = `
import { Html, Head, Main, NextScript } from 'next/document'
export default function Document() {
return (
<Html>
<Head />
<body>
<Main />
<NextScript />
</body>
</Html>
)
}
Document.getInitialProps = (ctx) => {
return ctx.defaultGetInitialProps(ctx)
}
`
const rscAppPage = `
import Container from '../components/container.server'
export default function App({children}) {
return <Container>{children}</Container>
}
`
const appWithGlobalCss = `
import '../styles.css'
function App({ Component, pageProps }) {
return <Component {...pageProps} />
}
export default App
`
const page500 = `
export default function Page500() {
return 'custom-500-page'
}
`
describe('Edge runtime - errors', () => {
it('should warn user that native node APIs are not supported', async () => {
const fsImportedErrorMessage =
'Native Node.js APIs are not supported in the Edge Runtime. Found `dns` imported.'
const { stderr } = await nextBuild(nativeModuleTestAppDir)
expect(stderr).toContain(fsImportedErrorMessage)
})
})
describe('Edge runtime - prod', () => {
const context = { appDir }
beforeAll(async () => {
error500Page.write(page500)
context.appPort = await findPort()
const { stderr } = await nextBuild(context.appDir)
context.stderr = stderr
context.server = await nextStart(context.appDir, context.appPort)
})
afterAll(async () => {
error500Page.delete()
await killApp(context.server)
})
it('should warn user for experimental risk with edge runtime and server components', async () => {
const edgeRuntimeWarning =
'You are using the experimental Edge Runtime with `experimental.runtime`.'
const rscWarning = `You have experimental React Server Components enabled. Continue at your own risk.`
expect(context.stderr).toContain(edgeRuntimeWarning)
expect(context.stderr).toContain(rscWarning)
})
it('should generate middleware SSR manifests for edge runtime', async () => {
const distServerDir = join(distDir, 'server')
const files = [
'middleware-build-manifest.js',
'middleware-flight-manifest.js',
'middleware-ssr-runtime.js',
'middleware-manifest.json',
]
const requiredServerFiles = (
await fs.readJSON(join(distDir, 'required-server-files.json'))
).files
files.forEach((file) => {
const filepath = join(distServerDir, file)
expect(fs.existsSync(filepath)).toBe(true)
})
requiredServerFiles.forEach((file) => {
const requiredFilePath = join(appDir, file)
expect(fs.existsSync(requiredFilePath)).toBe(true)
})
})
it('should have clientInfo in middleware manifest', async () => {
const middlewareManifestPath = join(
distDir,
'server',
'middleware-manifest.json'
)
const content = JSON.parse(
await fs.readFile(middlewareManifestPath, 'utf8')
)
for (const item of [
['/', true],
['/next-api/image', true],
['/next-api/link', true],
['/routes/[dynamic]', true],
]) {
expect(content.clientInfo).toContainEqual(item)
}
expect(content.clientInfo).not.toContainEqual([['/404', true]])
})
it('should support React.lazy and dynamic imports', async () => {
const html = await renderViaHTTP(context.appPort, '/dynamic-imports')
expect(html).toContain('foo.client')
})
basic(context, { env: 'prod' })
streaming(context, { env: 'prod' })
rsc(context, { runtime: 'edge', env: 'prod' })
})
describe('Edge runtime - dev', () => {
const context = { appDir }
beforeAll(async () => {
error500Page.write(page500)
context.appPort = await findPort()
context.server = await nextDev(context.appDir, context.appPort)
})
afterAll(async () => {
error500Page.delete()
await killApp(context.server)
})
it('should support React.lazy and dynamic imports', async () => {
const html = await renderViaHTTP(context.appPort, '/dynamic-imports')
expect(html).toContain('loading...')
const browser = await webdriver(context.appPort, '/dynamic-imports')
const content = await browser.eval(`window.document.body.innerText`)
expect(content).toMatchInlineSnapshot('"foo.client"')
})
it('should have content-type and content-encoding headers', async () => {
const res = await fetchViaHTTP(context.appPort, '/')
expect(res.headers.get('content-type')).toBe('text/html; charset=utf-8')
expect(res.headers.get('content-encoding')).toBe('gzip')
})
basic(context, { env: 'dev' })
streaming(context, { env: 'dev' })
rsc(context, { runtime: 'edge', env: 'dev' })
})
const nodejsRuntimeBasicSuite = {
runTests: (context, env) => {
basic(context, { env })
streaming(context, { env })
rsc(context, { runtime: 'nodejs' })
if (env === 'prod') {
it('should generate middleware SSR manifests for Node.js', async () => {
const distServerDir = join(distDir, 'server')
const requiredServerFiles = (
await fs.readJSON(join(distDir, 'required-server-files.json'))
).files
const files = [
'middleware-build-manifest.js',
'middleware-flight-manifest.json',
'middleware-manifest.json',
]
files.forEach((file) => {
const filepath = join(distServerDir, file)
expect(fs.existsSync(filepath)).toBe(true)
})
requiredServerFiles.forEach((file) => {
const requiredFilePath = join(appDir, file)
expect(fs.existsSync(requiredFilePath)).toBe(true)
})
})
}
},
beforeAll: () => {
error500Page.write(page500)
nextConfig.replace("runtime: 'edge'", "runtime: 'nodejs'")
},
afterAll: () => {
error500Page.delete()
nextConfig.restore()
},
}
const customAppPageSuite = {
runTests: (context) => {
it('should render container in app', async () => {
const indexHtml = await renderViaHTTP(context.appPort, '/')
const indexFlight = await renderViaHTTP(context.appPort, '/?__flight__=1')
expect(indexHtml).toContain('container-server')
expect(indexFlight).toContain('container-server')
})
},
beforeAll: () => appServerPage.write(rscAppPage),
afterAll: () => appServerPage.delete(),
}
const cssSuite = {
runTests: css,
beforeAll: () => appPage.write(appWithGlobalCss),
afterAll: () => appPage.delete(),
}
const documentSuite = {
runTests: (context) => {
it('should error when custom _document has getInitialProps method', async () => {
const res = await fetchViaHTTP(context.appPort, '/')
expect(res.status).toBe(500)
})
},
beforeAll: () => documentPage.write(documentWithGip),
afterAll: () => documentPage.delete(),
}
runSuite('Node.js runtime', 'dev', nodejsRuntimeBasicSuite)
runSuite('Node.js runtime', 'prod', nodejsRuntimeBasicSuite)
runSuite('Custom App', 'dev', customAppPageSuite)
runSuite('Custom App', 'prod', customAppPageSuite)
runSuite('CSS', 'dev', cssSuite)
runSuite('CSS', 'prod', cssSuite)
runSuite('Custom Document', 'dev', documentSuite)
runSuite('Custom Document', 'prod', documentSuite)
runSuite('Functions manifest', 'build', { runTests: functions })
function runSuite(suiteName, env, options) {
const context = { appDir, distDir }
describe(`${suiteName} ${env}`, () => {
beforeAll(async () => {
options.beforeAll?.()
if (env === 'prod') {
context.appPort = await findPort()
await nextBuild(context.appDir)
context.server = await nextStart(context.appDir, context.appPort)
}
if (env === 'dev') {
context.appPort = await findPort()
context.server = await nextDev(context.appDir, context.appPort)
}
})
afterAll(async () => {
options.afterAll?.()
if (context.server) {
await killApp(context.server)
}
})
options.runTests(context, env)
})
}