novalon-website/jest.setup.js

require('@testing-library/jest-dom');

const { TextEncoder, TextDecoder } = require('util');
global.TextEncoder = TextEncoder;
global.TextDecoder = TextDecoder;

const { setupAllMocks } = require('./src/__mocks__/shared-mocks');

setupAllMocks();

global.console = {
  ...console,
  error: jest.fn(),
  warn: jest.fn(),
  log: jest.fn(),
};

class MockIntersectionObserver {
  constructor(callback, options = {}) {
    this.callback = callback;
    this.options = options;
    this.elements = new Set();
    this.observationEntries = [];
  }

  observe(element) {
    this.elements.add(element);
    const entry = {
      isIntersecting: true,
      target: element,
      boundingClientRect: element.getBoundingClientRect ? element.getBoundingClientRect() : {},
      intersectionRatio: 1,
      intersectionRect: {},
      rootBounds: {},
      time: Date.now(),
    };
    this.observationEntries.push(entry);
    this.callback(this.observationEntries, this);
  }

  unobserve(element) {
    this.elements.delete(element);
  }

  disconnect() {
    this.elements.clear();
    this.observationEntries = [];
  }
}

global.IntersectionObserver = MockIntersectionObserver;

class MockResizeObserver {
  constructor(callback) {
    this.callback = callback;
    this.elements = new Set();
  }

  observe(element) {
    this.elements.add(element);
    this.callback([{ target: element, contentRect: { width: 100, height: 100 } }], this);
  }

  unobserve(element) {
    this.elements.delete(element);
  }

  disconnect() {
    this.elements.clear();
  }
}

global.ResizeObserver = MockResizeObserver;

Object.defineProperty(window, 'matchMedia', {
  writable: true,
  value: jest.fn().mockImplementation(query => ({
    matches: false,
    media: query,
    onchange: null,
    addListener: jest.fn(),
    removeListener: jest.fn(),
    addEventListener: jest.fn(),
    removeEventListener: jest.fn(),
    dispatchEvent: jest.fn(),
  })),
});

Object.defineProperty(window, 'scrollTo', {
  writable: true,
  value: jest.fn(),
});

Object.defineProperty(window, 'localStorage', {
  value: {
    store: {},
    getItem(key) {
      return this.store[key] || null;
    },
    setItem(key, value) {
      this.store[key] = value;
    },
    removeItem(key) {
      delete this.store[key];
    },
    clear() {
      this.store = {};
    },
  },
});

jest.mock('@/db', () => ({
  db: {
    select: jest.fn().mockReturnValue({
      from: jest.fn().mockReturnThis(),
      where: jest.fn().mockReturnThis(),
      orderBy: jest.fn().mockReturnThis(),
      limit: jest.fn().mockReturnThis(),
      execute: jest.fn().mockResolvedValue([]),
    }),
    insert: jest.fn().mockReturnValue({
      values: jest.fn().mockReturnThis(),
      returning: jest.fn().mockResolvedValue([{ id: 1 }]),
    }),
    update: jest.fn().mockReturnValue({
      set: jest.fn().mockReturnThis(),
      where: jest.fn().mockReturnThis(),
      returning: jest.fn().mockResolvedValue([{ id: 1 }]),
    }),
    delete: jest.fn().mockReturnValue({
      where: jest.fn().mockReturnThis(),
      returning: jest.fn().mockResolvedValue([{ id: 1 }]),
    }),
  },
}));