import type { IncomingMessage } from 'node:http'

import { describe, expect, it } from 'vitest'

import { forwarded } from '../../packages/forwarded/src'

import { createReq } from '../../test_helpers/createReq'

describe('forwarded(req)', () => {

it('should work with `X-Forwarded-For` header', () => {

const req = createReq('127.0.0.1') as IncomingMessage

expect(forwarded(req)).toEqual(['127.0.0.1'])

})

it('should include entries from `X-Forwarded-For`', () => {

const req = createReq('127.0.0.1', {

'x-forwarded-for': '10.0.0.2, 10.0.0.1'

}) as IncomingMessage

expect(forwarded(req)).toEqual(['127.0.0.1', '10.0.0.1', '10.0.0.2'])

})

it('should skip blank entries', () => {

const req = createReq('127.0.0.1', {

'x-forwarded-for': '10.0.0.2,, 10.0.0.1'

}) as IncomingMessage

expect(forwarded(req)).toEqual(['127.0.0.1', '10.0.0.1', '10.0.0.2'])

})

it('should trim leading OWS', () => {

const req = createReq('127.0.0.1', {

'x-forwarded-for': ' 10.0.0.2 , , 10.0.0.1 '

}) as IncomingMessage

expect(forwarded(req)).toEqual(['127.0.0.1', '10.0.0.1', '10.0.0.2'])

})

})