import getCookieDomain from './getCookieDomain';

describe('getCookieDomain', () => {
  beforeAll(() => {
    delete window.location;
    Object.defineProperty(window, 'location', { value: {} });
  });

  test('only top-level domains', async () => {
    Object.defineProperty(window.location, 'hostname', { value: 'subdomain.topleveldomain.com', configurable: true });
    expect(getCookieDomain()).toEqual('.topleveldomain.com');

    Object.defineProperty(window.location, 'hostname', {
      value: 'more.subdomain.topleveldomain.com',
      configurable: true,
    });
    expect(getCookieDomain()).toEqual('.topleveldomain.com');
  });

  test('does not add dot in front of localhost', async () => {
    Object.defineProperty(window.location, 'hostname', { value: 'localhost', configurable: true });
    expect(getCookieDomain()).toEqual('localhost');
  });
});