Nuxt/packages/server/test/middleware/nuxt.test.js

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import generateETag from 'etag'
import fresh from 'fresh'
import consola from 'consola'
import createNuxtMiddleware from '../../src/middleware/nuxt'
jest.mock('etag', () => jest.fn(() => 'etag-hash'))
jest.mock('fresh')
const createContext = () => ({
options: {
render: { http2: false },
build: {}
},
nuxt: {
callHook: jest.fn()
},
renderRoute: jest.fn(),
resources: {}
})
const createServerContext = () => ({
req: { headers: {}, url: 'http://localhost/test/server' },
res: { headers: {}, setHeader: jest.fn(), end: jest.fn() },
next: jest.fn()
})
describe('server: nuxtMiddleware', () => {
beforeEach(() => {
jest.clearAllMocks()
})
test('should return nuxt middleware', () => {
const nuxtMiddleware = createNuxtMiddleware({})
expect(nuxtMiddleware).toBeInstanceOf(Function)
})
test('should render route in nuxt middleware', async () => {
const context = createContext()
const result = { html: 'rendered html' }
context.renderRoute.mockReturnValue(result)
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
const html = await nuxtMiddleware(req, res, next)
expect(context.renderRoute).toBeCalledTimes(1)
expect(context.renderRoute).toBeCalledWith(req.url, { req, res })
expect(context.nuxt.callHook).toBeCalledTimes(3)
expect(context.nuxt.callHook).nthCalledWith(1, 'render:route', req.url, result, { req, res })
expect(context.nuxt.callHook).nthCalledWith(2, 'render:beforeResponse', req.url, result, { req, res })
expect(context.nuxt.callHook).nthCalledWith(3, 'render:routeDone', req.url, result, { req, res })
expect(res.setHeader).toBeCalledTimes(3)
expect(res.setHeader).nthCalledWith(1, 'Content-Type', 'text/html; charset=utf-8')
expect(res.setHeader).nthCalledWith(2, 'Accept-Ranges', 'none')
expect(res.setHeader).nthCalledWith(3, 'Content-Length', Buffer.byteLength(result.html))
expect(res.end).toBeCalledTimes(1)
expect(res.end).toBeCalledWith(result.html, 'utf8')
expect(res.statusCode).toEqual(200)
expect(html).toEqual(result.html)
})
test('should early return if route is redirected', async () => {
const context = createContext()
const result = { html: 'rendered html', redirected: true }
context.renderRoute.mockReturnValue(result)
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
const html = await nuxtMiddleware(req, res, next)
expect(context.nuxt.callHook).toBeCalledTimes(2)
expect(context.nuxt.callHook).nthCalledWith(1, 'render:route', req.url, result, { req, res })
expect(context.nuxt.callHook).nthCalledWith(2, 'render:routeDone', req.url, result, { req, res })
expect(res.setHeader).not.toBeCalled()
expect(res.end).not.toBeCalled()
expect(res.statusCode).toEqual(200)
expect(html).toEqual(result.html)
})
test('should set error status code when error occurred', async () => {
const context = createContext()
const result = { html: 'rendered html', error: new Error('render error') }
const nuxt = { error: { statusCode: 404 } }
context.renderRoute.mockImplementation((url, ctx) => {
ctx.nuxt = nuxt
return result
})
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
const html = await nuxtMiddleware(req, res, next)
expect(context.nuxt.callHook).toBeCalledTimes(3)
expect(context.nuxt.callHook).nthCalledWith(1, 'render:route', req.url, result, { req, res, nuxt })
expect(context.nuxt.callHook).nthCalledWith(2, 'render:beforeResponse', req.url, result, { req, res, nuxt })
expect(context.nuxt.callHook).nthCalledWith(3, 'render:routeDone', req.url, result, { req, res, nuxt })
expect(res.statusCode).toEqual(404)
expect(html).toEqual(result.html)
})
test('should add etag after rendering', async () => {
const context = createContext()
const result = { html: 'rendered html' }
context.renderRoute.mockReturnValue(result)
context.options.render.etag = true
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
await nuxtMiddleware(req, res, next)
expect(generateETag).toBeCalledTimes(1)
expect(generateETag).toBeCalledWith('rendered html', true)
expect(res.setHeader).nthCalledWith(1, 'ETag', 'etag-hash')
})
test('should set etag after rendering through hook', async () => {
const context = createContext()
const hash = jest.fn(() => 'etag-hook')
context.options.render.etag = { hash }
const result = { html: 'rendered html' }
context.renderRoute.mockReturnValue(result)
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
await nuxtMiddleware(req, res, next)
expect(hash).toBeCalledWith('rendered html', expect.any(Object))
expect(res.setHeader).nthCalledWith(1, 'ETag', 'etag-hook')
})
test('should return 304 if request is fresh', async () => {
const context = createContext()
const result = { html: 'rendered html' }
context.renderRoute.mockReturnValue(result)
context.options.render.etag = true
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(res.statusCode).toEqual(304)
expect(context.nuxt.callHook).toBeCalledTimes(3)
expect(context.nuxt.callHook).nthCalledWith(1, 'render:route', req.url, result, { req, res })
expect(context.nuxt.callHook).nthCalledWith(2, 'render:beforeResponse', req.url, result, { req, res })
expect(context.nuxt.callHook).nthCalledWith(3, 'render:routeDone', req.url, result, { req, res })
expect(res.end).toBeCalledTimes(1)
expect(res.end).toBeCalledWith()
})
test('should add http2 links header if http2 push is enabled', async () => {
const context = createContext()
const result = {
html: 'rendered html',
preloadFiles: ['/nuxt/preload1.js', '/nuxt/preload2.js']
}
context.renderRoute.mockReturnValue(result)
const pushAssets = jest.fn((req, res, publicPath, preloadFiles) => preloadFiles)
context.options.render.http2 = { push: true, pushAssets }
context.resources = { clientManifest: { publicPath: '/nuxt' } }
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(pushAssets).toBeCalledWith(req, res, '/nuxt', ['/nuxt/preload1.js', '/nuxt/preload2.js'])
expect(res.setHeader).nthCalledWith(1, 'Link', '/nuxt/preload1.js, /nuxt/preload2.js')
})
test('should only include script and style in http2 push by default', async () => {
const context = createContext()
const result = {
html: 'rendered html',
preloadFiles: [
{ file: '/nuxt/preload1.js', asType: 'script' },
{ file: '/nuxt/preload2.js', asType: 'script' },
{ file: '/nuxt/style.css', asType: 'style' },
{ file: '/nuxt/font.woff', asType: 'font' }
]
}
context.renderRoute.mockReturnValue(result)
context.options.render.http2 = { push: true }
context.resources = { clientManifest: { publicPath: '/nuxt' } }
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
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expect(res.setHeader).nthCalledWith(1, 'Link', '</nuxt/nuxt/preload1.js>; rel=preload; as=script, </nuxt/nuxt/preload2.js>; rel=preload; as=script, </nuxt/nuxt/style.css>; rel=preload; as=style')
})
test('should ignore preload files which are excluded by shouldPush', async () => {
const context = createContext()
const result = {
html: 'rendered html',
preloadFiles: [
{ file: '/nuxt/preload1.js', asType: 'script' },
{ file: '/nuxt/preload2.js', asType: 'script', modern: true },
{ file: '/nuxt/style.css', asType: 'style' },
{ file: '/nuxt/font.woff', asType: 'font' }
]
}
context.renderRoute.mockReturnValue(result)
context.options.dev = true
context.options.render.crossorigin = 'use-credentials'
context.options.render.http2 = {
push: true,
shouldPush: jest.fn((fileWithoutQuery, asType) => asType === 'script')
}
context.resources = { clientManifest: { publicPath: '/nuxt' } }
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(consola.warn).toBeCalledWith('http2.shouldPush is deprecated. Use http2.pushAssets function')
expect(context.options.render.http2.shouldPush).toBeCalledTimes(4)
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expect(res.setHeader).nthCalledWith(1, 'Link', '</nuxt/nuxt/preload1.js>; rel=preload; crossorigin=use-credentials; as=script, </nuxt/nuxt/preload2.js>; rel=modulepreload; crossorigin=use-credentials; as=script')
})
test('should add csp header if csp is enabled', async () => {
const context = createContext()
const result = { html: 'rendered html', cspScriptSrcHashes: ['sha256-hashes'] }
context.renderRoute.mockReturnValue(result)
context.options.render.csp = true
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(res.setHeader).nthCalledWith(1, 'Content-Security-Policy', "script-src 'self' sha256-hashes")
})
test('should support allowedSources for setting csp header', async () => {
const context = createContext()
const result = { html: 'rendered html', cspScriptSrcHashes: ['sha256-hashes'] }
context.renderRoute.mockReturnValue(result)
context.options.dev = true
context.options.render.csp = {
reportOnly: true,
allowedSources: ['/nuxt/*.js', '/nuxt/images/*']
}
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(res.setHeader).nthCalledWith(
1,
'Content-Security-Policy-Report-Only',
"script-src 'self' sha256-hashes /nuxt/*.js /nuxt/images/*"
)
})
test('should support policies for setting csp header', async () => {
const context = createContext()
const result = { html: 'rendered html', cspScriptSrcHashes: ['sha256-hashes'] }
context.renderRoute.mockReturnValue(result)
context.options.dev = true
context.options.render.csp = {
policies: {
'script-src': [
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'/nuxt',
'/test.js'
],
'report-uri': [
'/report'
]
}
}
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(res.setHeader).nthCalledWith(
1,
'Content-Security-Policy',
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"script-src sha256-hashes 'self' /nuxt /test.js; report-uri /report"
)
})
test('should catch error during running nuxt middleware', async () => {
const context = createContext()
const err = Error('render error')
context.renderRoute.mockImplementation(() => {
throw err
})
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
await nuxtMiddleware(req, res, next)
expect(next).toBeCalledWith(err)
})
test('should log and return error during redirecting in nuxt middleware', async () => {
const context = createContext()
const err = Error('render error')
context.renderRoute.mockImplementation((url, ctx) => {
ctx.redirected = true
throw err
})
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
fresh.mockReturnValue(true)
expect(await nuxtMiddleware(req, res, next)).toBe(err)
expect(consola.error).toBeCalledWith(err)
})
test('should return 400 if request is uri error', async () => {
const context = createContext()
const result = { html: 'rendered html' }
context.renderRoute.mockReturnValue(result)
const nuxtMiddleware = createNuxtMiddleware(context)
const { req, res, next } = createServerContext()
const err = Error('URI malformed')
err.name = 'URIError'
await nuxtMiddleware({ ...req, url: 'http://localhost/test/server/%c1%81' }, res, next)
expect(next).toBeCalledWith(err)
})
})