725 lines
22 KiB
TypeScript
725 lines
22 KiB
TypeScript
import {
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createSSRApp,
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h,
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ref,
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nextTick,
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VNode,
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Teleport,
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createStaticVNode,
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Suspense,
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onMounted,
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defineAsyncComponent,
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defineComponent
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} from '@vue/runtime-dom'
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import { renderToString, SSRContext } from '@vue/server-renderer'
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function mountWithHydration(html: string, render: () => any) {
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const container = document.createElement('div')
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container.innerHTML = html
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const app = createSSRApp({
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render
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})
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return {
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vnode: app.mount(container).$.subTree as VNode<Node, Element> & {
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el: Element
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},
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container
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}
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}
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const triggerEvent = (type: string, el: Element) => {
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const event = new Event(type)
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el.dispatchEvent(event)
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}
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describe('SSR hydration', () => {
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beforeEach(() => {
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document.body.innerHTML = ''
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})
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test('text', async () => {
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const msg = ref('foo')
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const { vnode, container } = mountWithHydration('foo', () => msg.value)
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expect(vnode.el).toBe(container.firstChild)
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expect(container.textContent).toBe('foo')
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msg.value = 'bar'
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await nextTick()
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expect(container.textContent).toBe('bar')
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})
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test('comment', () => {
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const { vnode, container } = mountWithHydration('<!---->', () => null)
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expect(vnode.el).toBe(container.firstChild)
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expect(vnode.el.nodeType).toBe(8) // comment
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})
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test('static', () => {
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const html = '<div><span>hello</span></div>'
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const { vnode, container } = mountWithHydration(html, () =>
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createStaticVNode('', 1)
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)
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expect(vnode.el).toBe(container.firstChild)
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expect(vnode.el.outerHTML).toBe(html)
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expect(vnode.anchor).toBe(container.firstChild)
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expect(vnode.children).toBe(html)
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})
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test('static (multiple elements)', () => {
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const staticContent = '<div></div><span>hello</span>'
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const html = `<div><div>hi</div>` + staticContent + `<div>ho</div></div>`
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const n1 = h('div', 'hi')
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const s = createStaticVNode('', 2)
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const n2 = h('div', 'ho')
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const { container } = mountWithHydration(html, () => h('div', [n1, s, n2]))
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const div = container.firstChild!
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expect(n1.el).toBe(div.firstChild)
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expect(n2.el).toBe(div.lastChild)
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expect(s.el).toBe(div.childNodes[1])
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expect(s.anchor).toBe(div.childNodes[2])
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expect(s.children).toBe(staticContent)
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})
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test('element with text children', async () => {
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const msg = ref('foo')
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const { vnode, container } = mountWithHydration(
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'<div class="foo">foo</div>',
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() => h('div', { class: msg.value }, msg.value)
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)
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expect(vnode.el).toBe(container.firstChild)
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expect(container.firstChild!.textContent).toBe('foo')
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msg.value = 'bar'
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await nextTick()
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expect(container.innerHTML).toBe(`<div class="bar">bar</div>`)
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})
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test('element with elements children', async () => {
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const msg = ref('foo')
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const fn = jest.fn()
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const { vnode, container } = mountWithHydration(
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'<div><span>foo</span><span class="foo"></span></div>',
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() =>
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h('div', [
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h('span', msg.value),
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h('span', { class: msg.value, onClick: fn })
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])
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)
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expect(vnode.el).toBe(container.firstChild)
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expect((vnode.children as VNode[])[0].el).toBe(
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container.firstChild!.childNodes[0]
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)
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expect((vnode.children as VNode[])[1].el).toBe(
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container.firstChild!.childNodes[1]
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)
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// event handler
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triggerEvent('click', vnode.el.querySelector('.foo')!)
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expect(fn).toHaveBeenCalled()
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msg.value = 'bar'
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await nextTick()
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expect(vnode.el.innerHTML).toBe(`<span>bar</span><span class="bar"></span>`)
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})
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test('element with ref', () => {
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const el = ref()
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const { vnode, container } = mountWithHydration('<div></div>', () =>
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h('div', { ref: el })
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)
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expect(vnode.el).toBe(container.firstChild)
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expect(el.value).toBe(vnode.el)
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})
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test('Fragment', async () => {
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const msg = ref('foo')
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const fn = jest.fn()
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const { vnode, container } = mountWithHydration(
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'<div><!--[--><span>foo</span><!--[--><span class="foo"></span><!--]--><!--]--></div>',
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() =>
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h('div', [
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[h('span', msg.value), [h('span', { class: msg.value, onClick: fn })]]
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])
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)
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expect(vnode.el).toBe(container.firstChild)
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expect(vnode.el.innerHTML).toBe(
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`<!--[--><span>foo</span><!--[--><span class="foo"></span><!--]--><!--]-->`
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)
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// start fragment 1
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const fragment1 = (vnode.children as VNode[])[0]
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expect(fragment1.el).toBe(vnode.el.childNodes[0])
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const fragment1Children = fragment1.children as VNode[]
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// first <span>
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expect(fragment1Children[0].el!.tagName).toBe('SPAN')
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expect(fragment1Children[0].el).toBe(vnode.el.childNodes[1])
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// start fragment 2
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const fragment2 = fragment1Children[1]
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expect(fragment2.el).toBe(vnode.el.childNodes[2])
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const fragment2Children = fragment2.children as VNode[]
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// second <span>
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expect(fragment2Children[0].el!.tagName).toBe('SPAN')
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expect(fragment2Children[0].el).toBe(vnode.el.childNodes[3])
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// end fragment 2
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expect(fragment2.anchor).toBe(vnode.el.childNodes[4])
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// end fragment 1
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expect(fragment1.anchor).toBe(vnode.el.childNodes[5])
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// event handler
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triggerEvent('click', vnode.el.querySelector('.foo')!)
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expect(fn).toHaveBeenCalled()
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msg.value = 'bar'
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await nextTick()
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expect(vnode.el.innerHTML).toBe(
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`<!--[--><span>bar</span><!--[--><span class="bar"></span><!--]--><!--]-->`
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)
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})
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test('Teleport', async () => {
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const msg = ref('foo')
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const fn = jest.fn()
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const teleportContainer = document.createElement('div')
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teleportContainer.id = 'teleport'
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teleportContainer.innerHTML = `<span>foo</span><span class="foo"></span><!---->`
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document.body.appendChild(teleportContainer)
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const { vnode, container } = mountWithHydration(
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'<!--teleport start--><!--teleport end-->',
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() =>
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h(Teleport, { to: '#teleport' }, [
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h('span', msg.value),
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h('span', { class: msg.value, onClick: fn })
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])
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)
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expect(vnode.el).toBe(container.firstChild)
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expect(vnode.anchor).toBe(container.lastChild)
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expect(vnode.target).toBe(teleportContainer)
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expect((vnode.children as VNode[])[0].el).toBe(
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teleportContainer.childNodes[0]
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)
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expect((vnode.children as VNode[])[1].el).toBe(
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teleportContainer.childNodes[1]
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)
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expect(vnode.targetAnchor).toBe(teleportContainer.childNodes[2])
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// event handler
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triggerEvent('click', teleportContainer.querySelector('.foo')!)
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expect(fn).toHaveBeenCalled()
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msg.value = 'bar'
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await nextTick()
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expect(teleportContainer.innerHTML).toBe(
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`<span>bar</span><span class="bar"></span><!---->`
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)
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})
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test('Teleport (multiple + integration)', async () => {
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const msg = ref('foo')
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const fn1 = jest.fn()
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const fn2 = jest.fn()
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const Comp = () => [
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h(Teleport, { to: '#teleport2' }, [
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h('span', msg.value),
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h('span', { class: msg.value, onClick: fn1 })
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]),
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h(Teleport, { to: '#teleport2' }, [
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h('span', msg.value + '2'),
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h('span', { class: msg.value + '2', onClick: fn2 })
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])
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]
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const teleportContainer = document.createElement('div')
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teleportContainer.id = 'teleport2'
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const ctx: SSRContext = {}
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const mainHtml = await renderToString(h(Comp), ctx)
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expect(mainHtml).toMatchInlineSnapshot(
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`"<!--[--><!--teleport start--><!--teleport end--><!--teleport start--><!--teleport end--><!--]-->"`
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)
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const teleportHtml = ctx.teleports!['#teleport2']
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expect(teleportHtml).toMatchInlineSnapshot(
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`"<span>foo</span><span class=\\"foo\\"></span><!----><span>foo2</span><span class=\\"foo2\\"></span><!---->"`
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)
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teleportContainer.innerHTML = teleportHtml
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document.body.appendChild(teleportContainer)
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const { vnode, container } = mountWithHydration(mainHtml, Comp)
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expect(vnode.el).toBe(container.firstChild)
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const teleportVnode1 = (vnode.children as VNode[])[0]
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const teleportVnode2 = (vnode.children as VNode[])[1]
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expect(teleportVnode1.el).toBe(container.childNodes[1])
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expect(teleportVnode1.anchor).toBe(container.childNodes[2])
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expect(teleportVnode2.el).toBe(container.childNodes[3])
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expect(teleportVnode2.anchor).toBe(container.childNodes[4])
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expect(teleportVnode1.target).toBe(teleportContainer)
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expect((teleportVnode1 as any).children[0].el).toBe(
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teleportContainer.childNodes[0]
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)
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expect(teleportVnode1.targetAnchor).toBe(teleportContainer.childNodes[2])
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expect(teleportVnode2.target).toBe(teleportContainer)
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expect((teleportVnode2 as any).children[0].el).toBe(
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teleportContainer.childNodes[3]
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)
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expect(teleportVnode2.targetAnchor).toBe(teleportContainer.childNodes[5])
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// // event handler
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triggerEvent('click', teleportContainer.querySelector('.foo')!)
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expect(fn1).toHaveBeenCalled()
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triggerEvent('click', teleportContainer.querySelector('.foo2')!)
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expect(fn2).toHaveBeenCalled()
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msg.value = 'bar'
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await nextTick()
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expect(teleportContainer.innerHTML).toMatchInlineSnapshot(
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`"<span>bar</span><span class=\\"bar\\"></span><!----><span>bar2</span><span class=\\"bar2\\"></span><!---->"`
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)
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})
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test('Teleport (disabled)', async () => {
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const msg = ref('foo')
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const fn1 = jest.fn()
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const fn2 = jest.fn()
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const Comp = () => [
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h('div', 'foo'),
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h(Teleport, { to: '#teleport3', disabled: true }, [
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h('span', msg.value),
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h('span', { class: msg.value, onClick: fn1 })
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]),
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h('div', { class: msg.value + '2', onClick: fn2 }, 'bar')
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]
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const teleportContainer = document.createElement('div')
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teleportContainer.id = 'teleport3'
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const ctx: SSRContext = {}
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const mainHtml = await renderToString(h(Comp), ctx)
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expect(mainHtml).toMatchInlineSnapshot(
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`"<!--[--><div>foo</div><!--teleport start--><span>foo</span><span class=\\"foo\\"></span><!--teleport end--><div class=\\"foo2\\">bar</div><!--]-->"`
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)
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const teleportHtml = ctx.teleports!['#teleport3']
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expect(teleportHtml).toMatchInlineSnapshot(`"<!---->"`)
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teleportContainer.innerHTML = teleportHtml
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document.body.appendChild(teleportContainer)
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const { vnode, container } = mountWithHydration(mainHtml, Comp)
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expect(vnode.el).toBe(container.firstChild)
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const children = vnode.children as VNode[]
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expect(children[0].el).toBe(container.childNodes[1])
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const teleportVnode = children[1]
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expect(teleportVnode.el).toBe(container.childNodes[2])
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expect((teleportVnode.children as VNode[])[0].el).toBe(
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container.childNodes[3]
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)
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expect((teleportVnode.children as VNode[])[1].el).toBe(
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container.childNodes[4]
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)
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expect(teleportVnode.anchor).toBe(container.childNodes[5])
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expect(children[2].el).toBe(container.childNodes[6])
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expect(teleportVnode.target).toBe(teleportContainer)
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expect(teleportVnode.targetAnchor).toBe(teleportContainer.childNodes[0])
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// // event handler
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triggerEvent('click', container.querySelector('.foo')!)
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expect(fn1).toHaveBeenCalled()
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triggerEvent('click', container.querySelector('.foo2')!)
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expect(fn2).toHaveBeenCalled()
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msg.value = 'bar'
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await nextTick()
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expect(container.innerHTML).toMatchInlineSnapshot(
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`"<!--[--><div>foo</div><!--teleport start--><span>bar</span><span class=\\"bar\\"></span><!--teleport end--><div class=\\"bar2\\">bar</div><!--]-->"`
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)
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})
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// compile SSR + client render fn from the same template & hydrate
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test('full compiler integration', async () => {
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const mounted: string[] = []
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const log = jest.fn()
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const toggle = ref(true)
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const Child = {
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data() {
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return {
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count: 0,
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text: 'hello',
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style: {
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color: 'red'
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}
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}
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},
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mounted() {
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mounted.push('child')
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},
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template: `
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<div>
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<span class="count" :style="style">{{ count }}</span>
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<button class="inc" @click="count++">inc</button>
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<button class="change" @click="style.color = 'green'" >change color</button>
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<button class="emit" @click="$emit('foo')">emit</button>
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<span class="text">{{ text }}</span>
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<input v-model="text">
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</div>
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`
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}
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const App = {
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setup() {
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return { toggle }
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},
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mounted() {
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mounted.push('parent')
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},
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template: `
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<div>
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<span>hello</span>
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<template v-if="toggle">
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<Child @foo="log('child')"/>
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<template v-if="true">
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<button class="parent-click" @click="log('click')">click me</button>
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</template>
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</template>
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<span>hello</span>
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</div>`,
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components: {
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Child
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},
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methods: {
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log
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}
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}
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const container = document.createElement('div')
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// server render
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container.innerHTML = await renderToString(h(App))
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// hydrate
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createSSRApp(App).mount(container)
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// assert interactions
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// 1. parent button click
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triggerEvent('click', container.querySelector('.parent-click')!)
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expect(log).toHaveBeenCalledWith('click')
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// 2. child inc click + text interpolation
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const count = container.querySelector('.count') as HTMLElement
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expect(count.textContent).toBe(`0`)
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triggerEvent('click', container.querySelector('.inc')!)
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await nextTick()
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expect(count.textContent).toBe(`1`)
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// 3. child color click + style binding
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expect(count.style.color).toBe('red')
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triggerEvent('click', container.querySelector('.change')!)
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await nextTick()
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expect(count.style.color).toBe('green')
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// 4. child event emit
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triggerEvent('click', container.querySelector('.emit')!)
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expect(log).toHaveBeenCalledWith('child')
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// 5. child v-model
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const text = container.querySelector('.text')!
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const input = container.querySelector('input')!
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expect(text.textContent).toBe('hello')
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input.value = 'bye'
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triggerEvent('input', input)
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await nextTick()
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expect(text.textContent).toBe('bye')
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})
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test('Suspense', async () => {
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const AsyncChild = {
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async setup() {
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const count = ref(0)
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return () =>
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h(
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'span',
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{
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onClick: () => {
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count.value++
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}
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},
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count.value
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)
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}
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}
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const { vnode, container } = mountWithHydration('<span>0</span>', () =>
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h(Suspense, () => h(AsyncChild))
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)
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expect(vnode.el).toBe(container.firstChild)
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// wait for hydration to finish
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await new Promise(r => setTimeout(r))
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triggerEvent('click', container.querySelector('span')!)
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await nextTick()
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expect(container.innerHTML).toBe(`<span>1</span>`)
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})
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test('Suspense (full integration)', async () => {
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const mountedCalls: number[] = []
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const asyncDeps: Promise<any>[] = []
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const AsyncChild = defineComponent({
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props: ['n'],
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async setup(props) {
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const count = ref(props.n)
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onMounted(() => {
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mountedCalls.push(props.n)
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})
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const p = new Promise(r => setTimeout(r, props.n * 10))
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asyncDeps.push(p)
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await p
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return () =>
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h(
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'span',
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{
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onClick: () => {
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count.value++
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}
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},
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count.value
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)
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}
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})
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const done = jest.fn()
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const App = {
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template: `
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<Suspense @resolve="done">
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<div>
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<AsyncChild :n="1" />
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<AsyncChild :n="2" />
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</div>
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</Suspense>`,
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components: {
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AsyncChild
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},
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methods: {
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done
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}
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}
|
|
|
|
const container = document.createElement('div')
|
|
// server render
|
|
container.innerHTML = await renderToString(h(App))
|
|
expect(container.innerHTML).toMatchInlineSnapshot(
|
|
`"<div><span>1</span><span>2</span></div>"`
|
|
)
|
|
// reset asyncDeps from ssr
|
|
asyncDeps.length = 0
|
|
// hydrate
|
|
createSSRApp(App).mount(container)
|
|
|
|
expect(mountedCalls.length).toBe(0)
|
|
expect(asyncDeps.length).toBe(2)
|
|
|
|
// wait for hydration to complete
|
|
await Promise.all(asyncDeps)
|
|
await new Promise(r => setTimeout(r))
|
|
|
|
// should flush buffered effects
|
|
expect(mountedCalls).toMatchObject([1, 2])
|
|
expect(container.innerHTML).toMatch(
|
|
`<div><span>1</span><span>2</span></div>`
|
|
)
|
|
|
|
const span1 = container.querySelector('span')!
|
|
triggerEvent('click', span1)
|
|
await nextTick()
|
|
expect(container.innerHTML).toMatch(
|
|
`<div><span>2</span><span>2</span></div>`
|
|
)
|
|
|
|
const span2 = span1.nextSibling as Element
|
|
triggerEvent('click', span2)
|
|
await nextTick()
|
|
expect(container.innerHTML).toMatch(
|
|
`<div><span>2</span><span>3</span></div>`
|
|
)
|
|
})
|
|
|
|
test('async component', async () => {
|
|
const spy = jest.fn()
|
|
const Comp = () =>
|
|
h(
|
|
'button',
|
|
{
|
|
onClick: spy
|
|
},
|
|
'hello!'
|
|
)
|
|
|
|
let serverResolve: any
|
|
let AsyncComp = defineAsyncComponent(
|
|
() =>
|
|
new Promise(r => {
|
|
serverResolve = r
|
|
})
|
|
)
|
|
|
|
const App = {
|
|
render() {
|
|
return ['hello', h(AsyncComp), 'world']
|
|
}
|
|
}
|
|
|
|
// server render
|
|
const htmlPromise = renderToString(h(App))
|
|
serverResolve(Comp)
|
|
const html = await htmlPromise
|
|
expect(html).toMatchInlineSnapshot(
|
|
`"<!--[-->hello<button>hello!</button>world<!--]-->"`
|
|
)
|
|
|
|
// hydration
|
|
let clientResolve: any
|
|
AsyncComp = defineAsyncComponent(
|
|
() =>
|
|
new Promise(r => {
|
|
clientResolve = r
|
|
})
|
|
)
|
|
|
|
const container = document.createElement('div')
|
|
container.innerHTML = html
|
|
createSSRApp(App).mount(container)
|
|
|
|
// hydration not complete yet
|
|
triggerEvent('click', container.querySelector('button')!)
|
|
expect(spy).not.toHaveBeenCalled()
|
|
|
|
// resolve
|
|
clientResolve(Comp)
|
|
await new Promise(r => setTimeout(r))
|
|
|
|
// should be hydrated now
|
|
triggerEvent('click', container.querySelector('button')!)
|
|
expect(spy).toHaveBeenCalled()
|
|
})
|
|
|
|
test('SVG as a mount container', () => {
|
|
const svgContainer = document.createElement('svg')
|
|
svgContainer.innerHTML = '<g></g>'
|
|
const app = createSSRApp({
|
|
render: () => h('g')
|
|
})
|
|
|
|
expect(
|
|
(app.mount(svgContainer).$.subTree as VNode<Node, Element> & {
|
|
el: Element
|
|
}).el instanceof SVGElement
|
|
)
|
|
})
|
|
|
|
describe('mismatch handling', () => {
|
|
test('text node', () => {
|
|
const { container } = mountWithHydration(`foo`, () => 'bar')
|
|
expect(container.textContent).toBe('bar')
|
|
expect(`Hydration text mismatch`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('element text content', () => {
|
|
const { container } = mountWithHydration(`<div>foo</div>`, () =>
|
|
h('div', 'bar')
|
|
)
|
|
expect(container.innerHTML).toBe('<div>bar</div>')
|
|
expect(`Hydration text content mismatch in <div>`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('not enough children', () => {
|
|
const { container } = mountWithHydration(`<div></div>`, () =>
|
|
h('div', [h('span', 'foo'), h('span', 'bar')])
|
|
)
|
|
expect(container.innerHTML).toBe(
|
|
'<div><span>foo</span><span>bar</span></div>'
|
|
)
|
|
expect(`Hydration children mismatch in <div>`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('too many children', () => {
|
|
const { container } = mountWithHydration(
|
|
`<div><span>foo</span><span>bar</span></div>`,
|
|
() => h('div', [h('span', 'foo')])
|
|
)
|
|
expect(container.innerHTML).toBe('<div><span>foo</span></div>')
|
|
expect(`Hydration children mismatch in <div>`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('complete mismatch', () => {
|
|
const { container } = mountWithHydration(
|
|
`<div><span>foo</span><span>bar</span></div>`,
|
|
() => h('div', [h('div', 'foo'), h('p', 'bar')])
|
|
)
|
|
expect(container.innerHTML).toBe('<div><div>foo</div><p>bar</p></div>')
|
|
expect(`Hydration node mismatch`).toHaveBeenWarnedTimes(2)
|
|
})
|
|
|
|
test('fragment mismatch removal', () => {
|
|
const { container } = mountWithHydration(
|
|
`<div><!--[--><div>foo</div><div>bar</div><!--]--></div>`,
|
|
() => h('div', [h('span', 'replaced')])
|
|
)
|
|
expect(container.innerHTML).toBe('<div><span>replaced</span></div>')
|
|
expect(`Hydration node mismatch`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('fragment not enough children', () => {
|
|
const { container } = mountWithHydration(
|
|
`<div><!--[--><div>foo</div><!--]--><div>baz</div></div>`,
|
|
() => h('div', [[h('div', 'foo'), h('div', 'bar')], h('div', 'baz')])
|
|
)
|
|
expect(container.innerHTML).toBe(
|
|
'<div><!--[--><div>foo</div><div>bar</div><!--]--><div>baz</div></div>'
|
|
)
|
|
expect(`Hydration node mismatch`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('fragment too many children', () => {
|
|
const { container } = mountWithHydration(
|
|
`<div><!--[--><div>foo</div><div>bar</div><!--]--><div>baz</div></div>`,
|
|
() => h('div', [[h('div', 'foo')], h('div', 'baz')])
|
|
)
|
|
expect(container.innerHTML).toBe(
|
|
'<div><!--[--><div>foo</div><!--]--><div>baz</div></div>'
|
|
)
|
|
// fragment ends early and attempts to hydrate the extra <div>bar</div>
|
|
// as 2nd fragment child.
|
|
expect(`Hydration text content mismatch`).toHaveBeenWarned()
|
|
// excessive children removal
|
|
expect(`Hydration children mismatch`).toHaveBeenWarned()
|
|
})
|
|
|
|
test('Teleport target has empty children', () => {
|
|
const teleportContainer = document.createElement('div')
|
|
teleportContainer.id = 'teleport'
|
|
document.body.appendChild(teleportContainer)
|
|
|
|
mountWithHydration('<!--teleport start--><!--teleport end-->', () =>
|
|
h(Teleport, { to: '#teleport' }, [h('span', 'value')])
|
|
)
|
|
expect(teleportContainer.innerHTML).toBe(`<span>value</span>`)
|
|
expect(`Hydration children mismatch`).toHaveBeenWarned()
|
|
})
|
|
})
|
|
})
|