Mock window.location in jest

jest.test.js

describe('test reading window.location', () => {
  beforeEach(() =>
    window.history.replaceState(
      {},
      'Title',
      '/?code=0123456789&other=yes'
    )
  );
  
  it('should have code', () => {
    expect(window.location.search).toEqual(expect.stringContaining('code='));
  });
  
  it('should read code', () => {
    expect(window.location.search.replace(/.*code=([0-9]*).*/, '$1')).toBe('0123456789');
  });
});