test_component.js

// Test element after render 
it('renders the correct message', () => {
    const Ctor = Vue.extend(MyComponent)
    const vm = new Ctor().$mount()
    expect(vm.$el.textContent).toBe('bye!')
    vm.$el.querySelector('i.fa-smile-o').should.exist
  })

  //Test method after render
  it('method work correctly', () => {
    const Ctor = Vue.extend(MyComponent)
    const vm = new Ctor().$mount()
    expect(vm.methodA()).toBe('bye!')
  })

  //Test computed after render
  it('computed work correctly', () => {
    const Ctor = Vue.extend(MyComponent)
    const vm = new Ctor().$mount()
    expect(vm.computedA()).toBe('bye!')
  })