text: import isHappyNumber from '../../src/FundamentalsOfProgramming/isHappyNumber';
  
  test('isHappyNumber tests', () => {
    expect(isHappyNumber(7)).toBe(true);
    expect(isHappyNumber(1)).toBe(true);
    expect(isHappyNumber(0)).toBe(false);
  });
  