jest.setup.js

// Add any global setup for Jest tests here

// Mock fetch
global.fetch = jest.fn();

// Mock localStorage
const localStorageMock = (function() {
  let store = {};
  return {
    getItem: jest.fn(key => store[key] || null),
    setItem: jest.fn((key, value) => {
      store[key] = value.toString();
    }),
    removeItem: jest.fn(key => {
      delete store[key];
    }),
    clear: jest.fn(() => {
      store = {};
    }),
    length: 0,
    key: jest.fn(index => null)
  };
})();

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

// Mock IndexedDB
const indexedDBMock = {
  open: jest.fn()
};

Object.defineProperty(window, 'indexedDB', {
  value: indexedDBMock
});

// Mock window.URL.createObjectURL
Object.defineProperty(window.URL, 'createObjectURL', {
  value: jest.fn()
});

// Mock window.URL.revokeObjectURL
Object.defineProperty(window.URL, 'revokeObjectURL', {
  value: jest.fn()
});

// Add custom matchers
expect.extend({
  toBeWithinRange(received, floor, ceiling) {
    const pass = received >= floor && received <= ceiling;
    if (pass) {
      return {
        message: () =>
          `expected ${received} not to be within range ${floor} - ${ceiling}`,
        pass: true,
      };
    } else {
      return {
        message: () =>
          `expected ${received} to be within range ${floor} - ${ceiling}`,
        pass: false,
      };
    }
  },
});