Stirling-PDF/frontend/src/setupTests.ts

import '@testing-library/jest-dom'
import { vi } from 'vitest'

// Mock i18next for tests
vi.mock('react-i18next', () => ({
  useTranslation: () => ({
    t: (key: string) => key,
    i18n: {
      changeLanguage: vi.fn(),
    },
  }),
  initReactI18next: {
    type: '3rdParty',
    init: vi.fn(),
  },
  I18nextProvider: ({ children }: { children: React.ReactNode }) => children,
}));

// Mock i18next-http-backend
vi.mock('i18next-http-backend', () => ({
  default: {
    type: 'backend',
    init: vi.fn(),
    read: vi.fn(),
    save: vi.fn(),
  },
}));

// Mock window.URL.createObjectURL and revokeObjectURL for tests
global.URL.createObjectURL = vi.fn(() => 'mocked-url')
global.URL.revokeObjectURL = vi.fn()

// Mock Worker for tests (Web Workers not available in test environment)
global.Worker = vi.fn().mockImplementation(() => ({
  postMessage: vi.fn(),
  terminate: vi.fn(),
  addEventListener: vi.fn(),
  removeEventListener: vi.fn(),
}))

// Mock ResizeObserver for Mantine components
global.ResizeObserver = vi.fn().mockImplementation(() => ({
  observe: vi.fn(),
  unobserve: vi.fn(),
  disconnect: vi.fn(),
}))

// Mock IntersectionObserver for components that might use it
global.IntersectionObserver = vi.fn().mockImplementation(() => ({
  observe: vi.fn(),
  unobserve: vi.fn(),
  disconnect: vi.fn(),
}))

// Mock matchMedia for responsive components
Object.defineProperty(window, 'matchMedia', {
  writable: true,
  value: vi.fn().mockImplementation(query => ({
    matches: false,
    media: query,
    onchange: null,
    addListener: vi.fn(), // deprecated
    removeListener: vi.fn(), // deprecated
    addEventListener: vi.fn(),
    removeEventListener: vi.fn(),
    dispatchEvent: vi.fn(),
  })),
})