import { readFile } from 'node:fs/promises'
import { fileURLToPath } from 'node:url'
import { describe, expect, it } from 'vitest'

describe('sync contract', () => {
  it('does not treat browser connectivity state as proof that the API is reachable', async () => {
    const source = await readFile(fileURLToPath(new URL('./sync.ts', import.meta.url)), 'utf8')

    expect(source).not.toContain('navigator.onLine')
    expect(source).toContain("window.addEventListener('online'")
    expect(source).toContain("document.addEventListener('visibilitychange'")
  })
})