// Jest setup file for DOM environment
import { jest, beforeEach } from '@jest/globals';

// Mock localStorage
const createLocalStorageMock = () => {
  let store = {};
  return {
    getItem: (key) => store[key] || null,
    setItem: (key, value) => {
      store[key] = value.toString();
    },
    removeItem: (key) => {
      delete store[key];
    },
    clear: () => {
      store = {};
    },
    get length() {
      return Object.keys(store).length;
    },
    key: (index) => Object.keys(store)[index] || null
  };
};

const localStorageMock = createLocalStorageMock();

Object.defineProperty(window, 'localStorage', {
  value: localStorageMock,
  writable: true
});

// Reset localStorage before each test
beforeEach(() => {
  localStorageMock.clear();
});