core/packages/runtime-vapor/__tests__/vdomInterop.spec.ts

import {
  KeepAlive,
  createVNode,
  defineComponent,
  h,
  nextTick,
  onActivated,
  onBeforeMount,
  onDeactivated,
  onMounted,
  onUnmounted,
  ref,
  renderSlot,
  toDisplayString,
  useModel,
} from '@vue/runtime-dom'
import { makeInteropRender } from './_utils'
import {
  applyTextModel,
  applyVShow,
  child,
  createComponent,
  defineVaporAsyncComponent,
  defineVaporComponent,
  renderEffect,
  setText,
  template,
} from '../src'

const define = makeInteropRender()

describe('vdomInterop', () => {
  describe('props', () => {
    test('should work if props are not provided', () => {
      const VaporChild = defineVaporComponent({
        props: {
          msg: String,
        },
        setup(_, { attrs }) {
          return [document.createTextNode(attrs.class || 'foo')]
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('foo')
    })

    test('should handle class prop when vapor renders vdom component', () => {
      const VDomChild = defineComponent({
        setup() {
          return () => h('div', { class: 'foo' })
        },
      })

      const VaporChild = defineVaporComponent({
        setup() {
          return createComponent(VDomChild as any, { class: () => 'bar' })
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('<div class="foo bar"></div>')
    })
  })

  describe('v-model', () => {
    test('basic work', async () => {
      const VaporChild = defineVaporComponent({
        props: {
          modelValue: {},
          modelModifiers: {},
        },
        emits: ['update:modelValue'],
        setup(__props) {
          const modelValue = useModel(__props, 'modelValue')

          const n0 = template('<h1> </h1>')() as any
          const n1 = template('<input>')() as any
          const x0 = child(n0) as any
          applyTextModel(
            n1,
            () => modelValue.value,
            _value => (modelValue.value = _value),
          )
          renderEffect(() => setText(x0, toDisplayString(modelValue.value)))
          return [n0, n1]
        },
      })

      const { html, host } = define({
        setup() {
          const msg = ref('foo')
          return () =>
            h(VaporChild as any, {
              modelValue: msg.value,
              'onUpdate:modelValue': (value: string) => {
                msg.value = value
              },
            })
        },
      }).render()

      expect(html()).toBe('<h1>foo</h1><input>')

      const inputEl = host.querySelector('input')!
      inputEl.value = 'bar'
      inputEl.dispatchEvent(new Event('input'))

      await nextTick()
      expect(html()).toBe('<h1>bar</h1><input>')
    })
  })

  describe('emit', () => {
    test('emit from vapor child to vdom parent', () => {
      const VaporChild = defineVaporComponent({
        emits: ['click'],
        setup(_, { emit }) {
          emit('click')
          return []
        },
      })

      const fn = vi.fn()
      define({
        setup() {
          return () => h(VaporChild as any, { onClick: fn })
        },
      }).render()

      // fn should be called once
      expect(fn).toHaveBeenCalledTimes(1)
    })
  })

  describe('v-show', () => {
    test('apply v-show to vdom child', async () => {
      const VDomChild = {
        setup() {
          return () => h('div')
        },
      }

      const show = ref(false)
      const VaporChild = defineVaporComponent({
        setup() {
          const n1 = createComponent(VDomChild as any)
          applyVShow(n1, () => show.value)
          return n1
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('<div style="display: none;"></div>')

      show.value = true
      await nextTick()
      expect(html()).toBe('<div style=""></div>')
    })
  })

  describe('slots', () => {
    test('basic', () => {
      const VDomChild = defineComponent({
        setup(_, { slots }) {
          return () => renderSlot(slots, 'default')
        },
      })

      const VaporChild = defineVaporComponent({
        setup() {
          return createComponent(
            VDomChild as any,
            null,
            {
              default: () => document.createTextNode('default slot'),
            },
            true,
          )
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('default slot')
    })

    test('functional slot', () => {
      const VDomChild = defineComponent({
        setup(_, { slots }) {
          return () => createVNode(slots.default!)
        },
      })

      const VaporChild = defineVaporComponent({
        setup() {
          return createComponent(
            VDomChild as any,
            null,
            {
              default: () => document.createTextNode('default slot'),
            },
            true,
          )
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('default slot')
    })
  })

  describe.todo('provide', () => {})

  describe.todo('inject', () => {})

  describe.todo('template ref', () => {})

  describe.todo('dynamic component', () => {})

  describe('attribute fallthrough', () => {
    it('should fallthrough attrs to vdom child', () => {
      const VDomChild = defineComponent({
        setup() {
          return () => h('div')
        },
      })

      const VaporChild = defineVaporComponent({
        setup() {
          return createComponent(
            VDomChild as any,
            { foo: () => 'vapor foo' },
            null,
            true,
          )
        },
      })

      const { html } = define({
        setup() {
          return () => h(VaporChild as any, { foo: 'foo', bar: 'bar' })
        },
      }).render()
      expect(html()).toBe('<div foo="foo" bar="bar"></div>')
    })

    it('should not fallthrough emit handlers to vdom child', () => {
      const VDomChild = defineComponent({
        emits: ['click'],
        setup(_, { emit }) {
          return () => h('button', { onClick: () => emit('click') }, 'click me')
        },
      })

      const fn = vi.fn()
      const VaporChild = defineVaporComponent({
        emits: ['click'],
        setup() {
          return createComponent(
            VDomChild as any,
            { onClick: () => fn },
            null,
            true,
          )
        },
      })

      const { host, html } = define({
        setup() {
          return () => h(VaporChild as any)
        },
      }).render()

      expect(html()).toBe('<button>click me</button>')
      const button = host.querySelector('button')!
      button.dispatchEvent(new Event('click'))

      // fn should be called once
      expect(fn).toHaveBeenCalledTimes(1)
    })
  })

  describe('async component', () => {
    const duration = 5
    test('render vapor async component', async () => {
      const VdomChild = {
        setup() {
          return () => h('div', 'foo')
        },
      }
      const VaporAsyncChild = defineVaporAsyncComponent({
        loader: () => {
          return new Promise(r => {
            setTimeout(() => {
              r(VdomChild as any)
            }, duration)
          })
        },
        loadingComponent: () => h('span', 'loading...'),
      })

      const { html } = define({
        setup() {
          return () => h(VaporAsyncChild as any)
        },
      }).render()

      expect(html()).toBe('<span>loading...</span><!--async component-->')

      await new Promise(r => setTimeout(r, duration))
      await nextTick()
      expect(html()).toBe('<div>foo</div><!--async component-->')
    })
  })

  describe('keepalive', () => {
    function assertHookCalls(
      hooks: {
        beforeMount: any
        mounted: any
        activated: any
        deactivated: any
        unmounted: any
      },
      callCounts: number[],
    ) {
      expect([
        hooks.beforeMount.mock.calls.length,
        hooks.mounted.mock.calls.length,
        hooks.activated.mock.calls.length,
        hooks.deactivated.mock.calls.length,
        hooks.unmounted.mock.calls.length,
      ]).toEqual(callCounts)
    }

    let hooks: any
    beforeEach(() => {
      hooks = {
        beforeMount: vi.fn(),
        mounted: vi.fn(),
        activated: vi.fn(),
        deactivated: vi.fn(),
        unmounted: vi.fn(),
      }
    })

    test('render vapor component', async () => {
      const VaporChild = defineVaporComponent({
        setup() {
          const msg = ref('vapor')
          onBeforeMount(() => hooks.beforeMount())
          onMounted(() => hooks.mounted())
          onActivated(() => hooks.activated())
          onDeactivated(() => hooks.deactivated())
          onUnmounted(() => hooks.unmounted())

          const n0 = template('<input type="text">', true)() as any
          applyTextModel(
            n0,
            () => msg.value,
            _value => (msg.value = _value),
          )
          return n0
        },
      })

      const show = ref(true)
      const toggle = ref(true)
      const { html, host } = define({
        setup() {
          return () =>
            show.value
              ? h(KeepAlive, null, {
                  default: () => (toggle.value ? h(VaporChild as any) : null),
                })
              : null
        },
      }).render()

      expect(html()).toBe('<input type="text">')
      let inputEl = host.firstChild as HTMLInputElement
      expect(inputEl.value).toBe('vapor')
      assertHookCalls(hooks, [1, 1, 1, 0, 0])

      // change input value
      inputEl.value = 'changed'
      inputEl.dispatchEvent(new Event('input'))
      await nextTick()

      // deactivate
      toggle.value = false
      await nextTick()
      expect(html()).toBe('<!---->')
      assertHookCalls(hooks, [1, 1, 1, 1, 0])

      // activate
      toggle.value = true
      await nextTick()
      expect(html()).toBe('<input type="text">')
      inputEl = host.firstChild as HTMLInputElement
      expect(inputEl.value).toBe('changed')
      assertHookCalls(hooks, [1, 1, 2, 1, 0])

      // unmount keepalive
      show.value = false
      await nextTick()
      expect(html()).toBe('<!---->')
      assertHookCalls(hooks, [1, 1, 2, 2, 1])

      // mount keepalive
      show.value = true
      await nextTick()
      inputEl = host.firstChild as HTMLInputElement
      expect(inputEl.value).toBe('vapor')
      assertHookCalls(hooks, [2, 2, 3, 2, 1])
    })
  })
})