novalon-website/jest.setup.js

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

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

if (typeof global.Request === 'undefined') {
  global.Request = class Request {
    constructor(input, init = {}) {
      this.url = typeof input === 'string' ? input : input.url;
      this.method = init.method || 'GET';
      this.headers = new Map(Object.entries(init.headers || {}));
      this.body = init.body;
    }
    async json() {
      return typeof this.body === 'string' ? JSON.parse(this.body) : this.body;
    }
  };
}

if (typeof global.Response === 'undefined') {
  global.Response = class Response {
    constructor(body, init = {}) {
      this.body = body;
      this.status = init.status || 200;
      this.statusText = init.statusText || 'OK';
      this.headers = new Map(Object.entries(init.headers || {}));
    }
    async json() {
      return typeof this.body === 'string' ? JSON.parse(this.body) : this.body;
    }
    async text() {
      return typeof this.body === 'string' ? this.body : JSON.stringify(this.body);
    }
  };
}

if (typeof global.Headers === 'undefined') {
  global.Headers = class Headers {
    constructor(init = {}) {
      this._headers = new Map(Object.entries(init));
    }
    get(name) {
      return this._headers.get(name);
    }
    set(name, value) {
      this._headers.set(name, value);
    }
  };
}

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 }]),
    }),
  },
}));