jest-global-mocks.ts

Object.defineProperty(window, 'crypto', {
  value: {
    randomUUID: () => {
      let dt = new Date().getTime();
      return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
        const r = (dt + Math.random() * 16) % 16 | 0;
        dt = Math.floor(dt / 16);
        return (c == 'x' ? r : (r & 0x3) | 0x8).toString(16);
      });
    },
  },
});

Object.defineProperty(window, 'CSS', { value: null });

Object.defineProperty(document, 'doctype', {
  value: '<!DOCTYPE html>',
});

Object.defineProperty(window, 'getComputedStyle', {
  value: () => {
    return {
      display: 'none',
      appearance: ['-webkit-appearance'],
    };
  },
});

/**
 * ISSUE: https://github.com/angular/material2/issues/7101
 * Workaround for JSDOM missing transform property
 */
Object.defineProperty(document.body.style, 'transform', {
  value: () => {
    return {
      enumerable: true,
      configurable: true,
    };
  },
});