setup-jest.ts

import { setupZoneTestEnv } from 'jest-preset-angular/setup-env/zone';

setupZoneTestEnv();

// Global mocks for jsdom
const mock = () => {
  let storage: Record<string, string> = {};
  return {
    getItem: (key: string) => (key in storage ? storage[key] : null),
    setItem: (key: string, value: string) => (storage[key] = value || ''),
    removeItem: (key: string) => delete storage[key],
    clear: () => (storage = {}),
  };
};

Object.defineProperty(window, 'localStorage', { value: mock() });
Object.defineProperty(window, 'sessionStorage', { value: mock() });
Object.defineProperty(window, 'getComputedStyle', {
  value: () => ['-webkit-appearance'],
});

Object.defineProperty(document.body, 'clientWidth', { value: 1024 });
Object.defineProperty(document.body, 'clientHeight', { value: 768 });

// Mock ResizeObserver for Jest (PrimeNG and other UI libs may require this)
class ResizeObserver {
  // eslint-disable-next-line @typescript-eslint/no-empty-function
  observe() {}
  // eslint-disable-next-line @typescript-eslint/no-empty-function
  unobserve() {}
  // eslint-disable-next-line @typescript-eslint/no-empty-function
  disconnect() {}
}

Object.defineProperty(window, 'ResizeObserver', {
  writable: true,
  configurable: true,
  value: ResizeObserver,
});

// eslint-disable-next-line @typescript-eslint/no-explicit-any
(global as any).ace = {
  define: jest.fn(),
  require: jest.fn().mockReturnValue({
    snippetCompleter: {},
  }),
};

jest.mock('@newrelic/browser-agent/loaders/browser-agent', () => ({
  BrowserAgent: jest.fn().mockImplementation(() => ({
    start: jest.fn(),
    stop: jest.fn(),
  })),
}));