detectOS.test.mjs

import { detectOsInUserAgent, detectOS } from '@/util/detectOS';

const userAgentTestCases = [
  [
    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.135 Safari/537.36 Edge/12.246',
    'WIN',
  ],
  [
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36',
    'MAC',
  ],
  [
    'Mozilla/5.0 (X11; CrOS x86_64 8172.45.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.64 Safari/537.36',
    'OTHER',
  ],
  [
    'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:15.0) Gecko/20100101 Firefox/15.0.1',
    'LINUX',
  ],
  [
    'Mozilla/5.0 (iPhone; CPU iPhone OS 13_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.3 Mobile/15E148 Safari/604.1',
    'MAC',
  ],
  ['', 'OTHER'],
  ['OTHERAgent/1.0', 'OTHER'],
  [undefined, 'OTHER'],
];

describe('detectOsInUserAgent', () => {
  it.each(userAgentTestCases)(
    'should return %s for userAgent %s',
    (userAgent, expected) => {
      expect(detectOsInUserAgent(userAgent)).toBe(expected);
    }
  );

  it('should return OTHER if no match is found', () => {
    const result = detectOsInUserAgent('no-match');
    expect(result).toBe('OTHER');
  });

  it('should detect Windows', () => {
    const result = detectOsInUserAgent('Mozilla Win something');
    expect(result).toBe('WIN');
  });

  it('should detect Linux', () => {
    const result = detectOsInUserAgent('Mozilla/5.0 (X11; Linux x86_64)');
    expect(result).toBe('LINUX');
  });
});

describe('detectOS', () => {
  it('should call detectOsInUserAgent', () => {
    Object.defineProperty(global, 'navigator', {
      value: { userAgent: 'Mac' },
      configurable: true,
    });
    expect(detectOS()).toBe('MAC');
  });

  it('should return OTHER if navigator is undefined', () => {
    Object.defineProperty(global, 'navigator', {
      value: undefined,
      configurable: true,
    });
    expect(detectOS()).toBe('OTHER');
  });
});