forked from vercel/next.js
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index.test.ts
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/
index.test.ts
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import { createNext } from 'e2e-utils'
import { NextInstance } from 'test/lib/next-modes/base'
import { renderViaHTTP } from 'next-test-utils'
describe('middleware environment variables in node server reflect the usage inference', () => {
let next: NextInstance
beforeAll(() => {
process.env.CAN_BE_INFERRED = 'can-be-inferred'
process.env.X_CUSTOM_HEADER = 'x-custom-header'
process.env.IGNORED_ENV_VAR = 'ignored-env-var'
})
beforeAll(async () => {
next = await createNext({
files: {
'pages/_middleware.js': `
export default function middleware() {
return new Response(JSON.stringify({
canBeInferred: process.env.CAN_BE_INFERRED,
rest: process.env
}), {
headers: {
'Content-Type': 'application/json',
'X-Custom-Header': process.env.X_CUSTOM_HEADER,
}
})
}
`,
},
dependencies: {},
})
})
afterAll(() => next.destroy())
it('limits process.env to only contain env vars that are inferred from usage', async () => {
const html = await renderViaHTTP(next.url, '/test')
let parsed: any
expect(() => {
parsed = JSON.parse(html)
}).not.toThrow()
expect(parsed).toEqual({
canBeInferred: 'can-be-inferred',
rest: {
CAN_BE_INFERRED: 'can-be-inferred',
X_CUSTOM_HEADER: 'x-custom-header',
},
})
})
})