bennc-js/tests/messages/userDataResponse.test.ts

import Color from 'color'
import { MessageTypes } from '../../src/common'
import { packers, unpackers } from '../../src/mapping'

const KEY = new Uint8Array([0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F])

test('Create a user data response (0x0003) packet.', () => {
  // Given
  const username = 'Butlersaurus'
  const colour = Color('#FF4000')
  const clientId = 'Mercury'

  // When
  const packedPacket = packers[MessageTypes.UserDataResponse](
    {
      username: username,
      colour: colour,
      clientId: clientId
    },
    KEY
  )

  // Then
  // We can't check the contents of the data as it's encrypted with a random nonce.
  // Check the message type and length.
  expect(packedPacket.slice(0, 4)).toMatchObject(new Uint8Array([0x00, 0x03, 0x00, 0x3A]))

  // Check the total length is as expected.
  expect(packedPacket.length).toBe(62)
})

test('Parse a user data response (0x0003).', () => {
  // Given
  const ciphertext = new Uint8Array([
    0x56, 0x71, 0x08, 0xf9, 0x2c, 0x4e, 0x41, 0x13, 0xbe, 0x44, 0xba, 0xd9, 0xe4, 0x25,
    0x14, 0x60, 0x3b, 0x96, 0x7e, 0x0b, 0xbd, 0xac, 0xf0, 0xaf, 0xac, 0xd7, 0x80, 0xe5,
    0x62, 0xd4, 0x33, 0x10, 0x23, 0x6d, 0x00, 0x3c, 0xae, 0x40, 0x6c, 0xe9, 0x40, 0xfc,
    0x1c, 0xe0, 0xd3, 0xca, 0x65, 0xea, 0x83, 0x73, 0x5e, 0xd2, 0x67, 0xb2, 0x94, 0x58,
    0x12, 0x73
  ])
  const username = 'Butlersaurus'
  const colour = Color('#FF4000')
  const clientId = 'Mercury'

  // When
  const unpackedPacket = unpackers[MessageTypes.UserDataResponse](ciphertext, KEY)

  // Then
  expect(unpackedPacket.success).toBe(true)
  expect(unpackedPacket.username).toBe(username)
  expect(unpackedPacket.colour).toMatchObject(colour)
  expect(unpackedPacket.clientId).toBe(clientId)
})