import consola from 'consola'

import { loadFixture, getPort, Nuxt } from '../utils'

let config

describe('server listen', () => {

beforeAll(async () => {

config = await loadFixture('empty')

})

test('should throw error when listening on same port (prod)', async () => {

const nuxt = new Nuxt(config)

await nuxt.ready()

const port = await getPort()

const listen = () => nuxt.server.listen(port, 'localhost')

// Listen for first time

await listen()

expect(nuxt.server.listeners[0].port).toBe(port)

// Listen for second time

await expect(listen()).rejects.toThrow(`Address \`localhost:${port}\` is already in use.`)

await nuxt.close()

})

test('should assign a random port when listening on same port (dev)', async () => {

const nuxt = new Nuxt({ ...config, dev: true })

await nuxt.ready()

const port = await getPort()

const listen = () => nuxt.server.listen(port, 'localhost')

// Listen for first time

await listen()

expect(nuxt.server.listeners[0].port).toBe(port)

// Listen for second time

await listen()

expect(nuxt.server.listeners[1].port).not.toBe(nuxt.server.listeners[0].port)

expect(consola.warn).toHaveBeenCalledTimes(1)

expect(consola.warn).toHaveBeenCalledWith(`Address \`localhost:${port}\` is already in use.`)

await nuxt.close()

})

test('should skip the use of default port when listening on port 0', async () => {

// Stub process.env.PORT

const stubDetails = {

originalValue: process.env.PORT,

hasProperty: 'PORT' in process.env

}

const DEFAULT_PORT = '2999'

process.env.PORT = DEFAULT_PORT

// Setup test

const nuxt = new Nuxt({ ...config, dev: true })

await nuxt.ready()

const listen = () => nuxt.server.listen(0, 'localhost') // Use port 0 to let allow host to randomly assign a free PORT

const toString = (x = '') => `${x}`

// Nuxt server should not be listening on the DEFAULT_PORT

await listen()

expect(toString(nuxt.server.listeners[0].port)).not.toBe(DEFAULT_PORT)

// Reset stub for process.env.PORT

if (stubDetails.hasProperty) {

process.env.PORT = stubDetails.originalValue

} else {

delete process.env.PORT

}

// Finalize test

await nuxt.close()

})

})