text: import Cat from './index'
  
  describe('prototype', () => {
    test('clone', () => {
      const cat1 = new Cat('Mimi', 1)
      const cat2 = cat1.clone()
      expect(cat1.name).toBe('Mimi')
      expect(cat2.name).toBe('Mimi')
  
      cat2.name = 'NaNa'
      expect(cat1.name).toBe('Mimi')
      expect(cat2.name).toBe('NaNa')
      expect(cat2 instanceof Cat).toBe(true)
    })
  })
  