import { describe, expect, it } from 'vitest'
import { extractOscTitleScanTail } from './osc-title-scan-tail'

describe('extractOscTitleScanTail', () => {
  it('keeps incomplete OSC title candidates only', () => {
    expect(extractOscTitleScanTail('\x1b]0;Codex work')).toBe('\x1b]0;Codex work')
    expect(extractOscTitleScanTail('\x1b]2;Codex working\x1b')).toBe('\x1b]2;Codex working\x1b')
    expect(extractOscTitleScanTail('\x1b]')).toBe('\x1b]')
    expect(extractOscTitleScanTail('\x1b]1')).toBe('\x1b]1')
  })

  it('does not carry non-title OSC payloads into the title scanner', () => {
    expect(extractOscTitleScanTail('\x1b]133;D;13')).toBe('')
    expect(extractOscTitleScanTail('\x1b]7;file://host/tmp')).toBe('')
    expect(extractOscTitleScanTail('\x1b]133;D;0\x07\x1b')).toBe('\x1b')
  })
})