web/src/hooks/useD3Enabled.test.ts

import { renderHook, waitFor } from '@testing-library/react'
import { vi, describe, it, expect, afterEach } from 'vitest'
import { useD3Enabled } from './useD3Enabled'
import * as ledger from '../api/ledger'

afterEach(() => vi.restoreAllMocks())

describe('useD3Enabled', () => {
  it('is true when the D3 status reports enabled', async () => {
    vi.spyOn(ledger, 'financeStatus').mockResolvedValue({ enabled: true })
    const { result } = renderHook(() => useD3Enabled())
    await waitFor(() => expect(result.current).toBe(true))
  })

  it('is false when the status endpoint is absent (D3 dormant → 404)', async () => {
    vi.spyOn(ledger, 'financeStatus').mockRejectedValue(new Error('not found'))
    const { result } = renderHook(() => useD3Enabled())
    await waitFor(() => expect(result.current).toBe(false))
  })

  it('is false when enabled is false (runtime not ready)', async () => {
    vi.spyOn(ledger, 'financeStatus').mockResolvedValue({ enabled: false })
    const { result } = renderHook(() => useD3Enabled())
    await waitFor(() => expect(result.current).toBe(false))
  })
})