import { describe, it, expect } from 'vitest'
import { decodeShellPayload, shellPayloadByteLength } from '../../src/utils/shellData'

describe('decodeShellPayload', () => {
  it('decodes number arrays as UTF-8 bytes (not Array.join)', () => {
    // ESC [ ? 2 0 0 4 l  → bracketed paste off
    const bytes = [27, 91, 63, 50, 48, 48, 52, 108]
    const text = decodeShellPayload(bytes)
    expect(text).toBe('\x1b[?2004l')
    expect(text).not.toContain(',')
  })

  it('decodes Buffer-like objects', () => {
    const payload = { type: 'Buffer', data: [114, 111, 111, 116] } // "root"
    expect(decodeShellPayload(payload)).toBe('root')
  })

  it('passes through strings', () => {
    expect(decodeShellPayload('hello')).toBe('hello')
  })

  it('decodes Uint8Array', () => {
    expect(decodeShellPayload(new Uint8Array([65, 66, 67]))).toBe('ABC')
  })
})

describe('shellPayloadByteLength', () => {
  it('counts array length', () => {
    expect(shellPayloadByteLength([1, 2, 3])).toBe(3)
  })
})