// jest setup: RTL jest-dom + mock DB reset per test.
import '@testing-library/jest-dom';
import { resetMockDb } from './__mocks__/firebase/_mock-db';

// polyfill crypto.randomUUID for jsdom (used by generateId in App.js).
if (!global.crypto) global.crypto = {};
if (!global.crypto.randomUUID) {
  global.crypto.randomUUID = () => 'test-uuid-' + Math.random().toString(36).slice(2, 10);
}

// Stub Firebase env vars so initializeFirebase() succeeds under test.
// Real SDK calls are mocked via __mocks__/firebase/*.
process.env.REACT_APP_FIREBASE_API_KEY = 'test-api-key';
process.env.REACT_APP_FIREBASE_AUTH_DOMAIN = 'test.firebaseapp.com';
process.env.REACT_APP_FIREBASE_PROJECT_ID = 'test-project';
process.env.REACT_APP_FIREBASE_STORAGE_BUCKET = 'test.appspot.com';
process.env.REACT_APP_FIREBASE_MESSAGING_SENDER_ID = '1234567890';
process.env.REACT_APP_FIREBASE_APP_ID = '1:1234567890:web:abcdef';

beforeEach(() => {
  resetMockDb();
});