it('should set next page 2 to current page when click the Next Button', () => {
    const paginator = shallowMount(Paginator)
    let button = paginator.find('.paginator__next-btn')
    button.trigger('click')
    expect(paginator.vm.currentPage).toBe(2)
  })

  it('should set previous page 3 to current page when click the Previous Button', () => {
    const paginator = shallowMount(Paginator)
    paginator.setData({
      currentPage: 4
    })
    let button = paginator.find('.paginator__previous-btn')
    button.trigger('click')
    expect(paginator.vm.currentPage).toBe(3)
  })