937 lines
24 KiB
TypeScript
937 lines
24 KiB
TypeScript
import {
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h,
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Fragment,
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Teleport,
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createVNode,
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createCommentVNode,
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openBlock,
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createBlock,
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render,
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nodeOps,
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TestElement,
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serialize,
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serializeInner as inner,
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VNode,
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ref,
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nextTick,
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defineComponent,
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withCtx,
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renderSlot,
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onBeforeUnmount,
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createTextVNode,
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SetupContext,
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createApp,
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FunctionalComponent,
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renderList,
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onUnmounted
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} from '@vue/runtime-test'
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import { PatchFlags, SlotFlags } from '@vue/shared'
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import { SuspenseImpl } from '../src/components/Suspense'
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describe('renderer: optimized mode', () => {
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let root: TestElement
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let block: VNode | null = null
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beforeEach(() => {
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root = nodeOps.createElement('div')
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block = null
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})
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const renderWithBlock = (renderChildren: () => VNode[]) => {
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render(
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(openBlock(), (block = createBlock('div', null, renderChildren()))),
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root
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)
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}
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test('basic use of block', () => {
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render((openBlock(), (block = createBlock('p', null, 'foo'))), root)
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expect(block.dynamicChildren!.length).toBe(0)
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expect(inner(root)).toBe('<p>foo</p>')
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})
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test('block can appear anywhere in the vdom tree', () => {
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render(
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h('div', (openBlock(), (block = createBlock('p', null, 'foo')))),
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root
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)
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expect(block.dynamicChildren!.length).toBe(0)
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expect(inner(root)).toBe('<div><p>foo</p></div>')
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})
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test('block should collect dynamic vnodes', () => {
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renderWithBlock(() => [
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createVNode('p', null, 'foo', PatchFlags.TEXT),
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createVNode('i')
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])
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p>foo</p>'
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)
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})
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test('block can disable tracking', () => {
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render(
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// disable tracking
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(openBlock(true),
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(block = createBlock('div', null, [
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createVNode('p', null, 'foo', PatchFlags.TEXT)
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]))),
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root
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)
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expect(block.dynamicChildren!.length).toBe(0)
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})
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test('block as dynamic children', () => {
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renderWithBlock(() => [
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(openBlock(), createBlock('div', { key: 0 }, [h('p')]))
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])
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(block!.dynamicChildren![0].dynamicChildren!.length).toBe(0)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<div><p></p></div>'
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)
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renderWithBlock(() => [
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(openBlock(), createBlock('div', { key: 1 }, [h('i')]))
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])
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(block!.dynamicChildren![0].dynamicChildren!.length).toBe(0)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<div><i></i></div>'
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)
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})
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test('PatchFlags: PatchFlags.TEXT', async () => {
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renderWithBlock(() => [createVNode('p', null, 'foo', PatchFlags.TEXT)])
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expect(inner(root)).toBe('<div><p>foo</p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p>foo</p>'
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)
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renderWithBlock(() => [createVNode('p', null, 'bar', PatchFlags.TEXT)])
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expect(inner(root)).toBe('<div><p>bar</p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p>bar</p>'
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)
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})
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test('PatchFlags: PatchFlags.CLASS', async () => {
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renderWithBlock(() => [
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createVNode('p', { class: 'foo' }, '', PatchFlags.CLASS)
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])
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expect(inner(root)).toBe('<div><p class="foo"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p class="foo"></p>'
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)
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renderWithBlock(() => [
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createVNode('p', { class: 'bar' }, '', PatchFlags.CLASS)
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])
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expect(inner(root)).toBe('<div><p class="bar"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p class="bar"></p>'
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)
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})
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test('PatchFlags: PatchFlags.STYLE', async () => {
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renderWithBlock(() => [
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createVNode('p', { style: 'color: red' }, '', PatchFlags.STYLE)
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])
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expect(inner(root)).toBe('<div><p style="color: red"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p style="color: red"></p>'
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)
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renderWithBlock(() => [
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createVNode('p', { style: 'color: green' }, '', PatchFlags.STYLE)
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])
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expect(inner(root)).toBe('<div><p style="color: green"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p style="color: green"></p>'
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)
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})
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test('PatchFlags: PatchFlags.PROPS', async () => {
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renderWithBlock(() => [
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createVNode('p', { id: 'foo' }, '', PatchFlags.PROPS, ['id'])
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])
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expect(inner(root)).toBe('<div><p id="foo"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p id="foo"></p>'
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)
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renderWithBlock(() => [
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createVNode('p', { id: 'bar' }, '', PatchFlags.PROPS, ['id'])
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])
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expect(inner(root)).toBe('<div><p id="bar"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p id="bar"></p>'
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)
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})
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test('PatchFlags: PatchFlags.FULL_PROPS', async () => {
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let propName = 'foo'
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renderWithBlock(() => [
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createVNode('p', { [propName]: 'dynamic' }, '', PatchFlags.FULL_PROPS)
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])
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expect(inner(root)).toBe('<div><p foo="dynamic"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p foo="dynamic"></p>'
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)
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propName = 'bar'
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renderWithBlock(() => [
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createVNode('p', { [propName]: 'dynamic' }, '', PatchFlags.FULL_PROPS)
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])
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expect(inner(root)).toBe('<div><p bar="dynamic"></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p bar="dynamic"></p>'
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)
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})
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// the order and length of the list will not change
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test('PatchFlags: PatchFlags.STABLE_FRAGMENT', async () => {
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let list = ['foo', 'bar']
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render(
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(openBlock(),
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(block = createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode('p', null, item, PatchFlags.TEXT)
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}),
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PatchFlags.STABLE_FRAGMENT
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))),
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root
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)
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expect(inner(root)).toBe('<p>foo</p><p>bar</p>')
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expect(block.dynamicChildren!.length).toBe(2)
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expect(serialize(block.dynamicChildren![0].el as TestElement)).toBe(
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'<p>foo</p>'
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)
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expect(serialize(block.dynamicChildren![1].el as TestElement)).toBe(
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'<p>bar</p>'
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)
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list = list.map(item => item.repeat(2))
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render(
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(openBlock(),
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createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode('p', null, item, PatchFlags.TEXT)
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}),
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PatchFlags.STABLE_FRAGMENT
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)),
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root
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)
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expect(inner(root)).toBe('<p>foofoo</p><p>barbar</p>')
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expect(block.dynamicChildren!.length).toBe(2)
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expect(serialize(block.dynamicChildren![0].el as TestElement)).toBe(
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'<p>foofoo</p>'
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)
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expect(serialize(block.dynamicChildren![1].el as TestElement)).toBe(
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'<p>barbar</p>'
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)
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})
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// A Fragment with `UNKEYED_FRAGMENT` flag will always patch its children,
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// so there's no need for tracking dynamicChildren.
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test('PatchFlags: PatchFlags.UNKEYED_FRAGMENT', async () => {
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const list = [{ tag: 'p', text: 'foo' }]
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render(
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(openBlock(true),
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(block = createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode(item.tag, null, item.text)
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}),
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PatchFlags.UNKEYED_FRAGMENT
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))),
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root
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)
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expect(inner(root)).toBe('<p>foo</p>')
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expect(block.dynamicChildren!.length).toBe(0)
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list.unshift({ tag: 'i', text: 'bar' })
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render(
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(openBlock(true),
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createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode(item.tag, null, item.text)
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}),
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PatchFlags.UNKEYED_FRAGMENT
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)),
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root
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)
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expect(inner(root)).toBe('<i>bar</i><p>foo</p>')
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expect(block.dynamicChildren!.length).toBe(0)
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})
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// A Fragment with `KEYED_FRAGMENT` will always patch its children,
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// so there's no need for tracking dynamicChildren.
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test('PatchFlags: PatchFlags.KEYED_FRAGMENT', async () => {
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const list = [{ tag: 'p', text: 'foo' }]
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render(
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(openBlock(true),
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(block = createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode(item.tag, { key: item.tag }, item.text)
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}),
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PatchFlags.KEYED_FRAGMENT
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))),
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root
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)
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expect(inner(root)).toBe('<p>foo</p>')
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expect(block.dynamicChildren!.length).toBe(0)
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list.unshift({ tag: 'i', text: 'bar' })
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render(
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(openBlock(true),
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createBlock(
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Fragment,
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null,
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list.map(item => {
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return createVNode(item.tag, { key: item.tag }, item.text)
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}),
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PatchFlags.KEYED_FRAGMENT
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)),
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root
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)
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expect(inner(root)).toBe('<i>bar</i><p>foo</p>')
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expect(block.dynamicChildren!.length).toBe(0)
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})
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test('PatchFlags: PatchFlags.NEED_PATCH', async () => {
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const spyMounted = jest.fn()
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const spyUpdated = jest.fn()
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const count = ref(0)
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const Comp = {
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setup() {
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return () => {
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count.value
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return (
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openBlock(),
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(block = createBlock('div', null, [
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createVNode(
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'p',
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{ onVnodeMounted: spyMounted, onVnodeBeforeUpdate: spyUpdated },
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'',
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PatchFlags.NEED_PATCH
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)
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]))
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)
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}
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}
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}
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render(h(Comp), root)
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expect(inner(root)).toBe('<div><p></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p></p>'
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)
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expect(spyMounted).toHaveBeenCalledTimes(1)
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expect(spyUpdated).toHaveBeenCalledTimes(0)
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count.value++
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await nextTick()
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expect(inner(root)).toBe('<div><p></p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(serialize(block!.dynamicChildren![0].el as TestElement)).toBe(
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'<p></p>'
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)
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expect(spyMounted).toHaveBeenCalledTimes(1)
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expect(spyUpdated).toHaveBeenCalledTimes(1)
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})
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test('PatchFlags: PatchFlags.BAIL', async () => {
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render(
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(openBlock(),
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(block = createBlock('div', null, [createVNode('p', null, 'foo')]))),
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root
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)
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expect(inner(root)).toBe('<div><p>foo</p></div>')
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expect(block!.dynamicChildren!.length).toBe(0)
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render(
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(openBlock(),
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(block = createBlock(
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'div',
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null,
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[createVNode('i', null, 'bar')],
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PatchFlags.BAIL
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))),
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root
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)
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expect(inner(root)).toBe('<div><i>bar</i></div>')
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expect(block!.dynamicChildren).toBe(null)
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})
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// #1980
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test('dynamicChildren should be tracked correctly when normalizing slots to plain children', async () => {
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let block: VNode
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const Comp = defineComponent({
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setup(_props, { slots }) {
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return () => {
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const vnode =
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(openBlock(),
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(block = createBlock('div', null, {
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default: withCtx(() => [renderSlot(slots, 'default')]),
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_: SlotFlags.FORWARDED
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})))
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return vnode
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}
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}
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})
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const foo = ref(0)
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const App = {
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setup() {
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return () => {
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return createVNode(Comp, null, {
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default: withCtx(() => [
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createVNode('p', null, foo.value, PatchFlags.TEXT)
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]),
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// Indicates that this is a stable slot to avoid bail out
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_: SlotFlags.STABLE
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})
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}
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}
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}
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render(h(App), root)
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expect(inner(root)).toBe('<div><p>0</p></div>')
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expect(block!.dynamicChildren!.length).toBe(1)
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expect(block!.dynamicChildren![0].type).toBe(Fragment)
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expect(block!.dynamicChildren![0].dynamicChildren!.length).toBe(1)
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expect(
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serialize(
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block!.dynamicChildren![0].dynamicChildren![0].el as TestElement
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)
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).toBe('<p>0</p>')
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foo.value++
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await nextTick()
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expect(inner(root)).toBe('<div><p>1</p></div>')
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})
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// #2169
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// block
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// - dynamic child (1)
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// - component (2)
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// When unmounting (1), we know we are in optimized mode so no need to further
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// traverse unmount its children
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test('should not perform unnecessary unmount traversals', () => {
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const spy = jest.fn()
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const Child = {
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setup() {
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onBeforeUnmount(spy)
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return () => 'child'
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}
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}
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const Parent = () => (
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openBlock(),
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createBlock('div', null, [
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createVNode('div', { style: {} }, [createVNode(Child)], 4 /* STYLE */)
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])
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)
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render(h(Parent), root)
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render(null, root)
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expect(spy).toHaveBeenCalledTimes(1)
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})
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// #2444
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// `KEYED_FRAGMENT` and `UNKEYED_FRAGMENT` always need to diff its children
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test('non-stable Fragment always need to diff its children', () => {
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const spyA = jest.fn()
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const spyB = jest.fn()
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const ChildA = {
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setup() {
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onBeforeUnmount(spyA)
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return () => 'child'
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}
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}
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const ChildB = {
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setup() {
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onBeforeUnmount(spyB)
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return () => 'child'
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}
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}
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const Parent = () => (
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openBlock(),
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createBlock('div', null, [
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(openBlock(true),
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createBlock(
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Fragment,
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null,
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[createVNode(ChildA, { key: 0 })],
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128 /* KEYED_FRAGMENT */
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)),
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(openBlock(true),
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createBlock(
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Fragment,
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null,
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[createVNode(ChildB)],
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256 /* UNKEYED_FRAGMENT */
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))
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])
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)
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render(h(Parent), root)
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render(null, root)
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expect(spyA).toHaveBeenCalledTimes(1)
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expect(spyB).toHaveBeenCalledTimes(1)
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})
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// #2893
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test('manually rendering the optimized slots should allow subsequent updates to exit the optimized mode correctly', async () => {
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const state = ref(0)
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const CompA = {
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setup(props: any, { slots }: SetupContext) {
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return () => {
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return (
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openBlock(),
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createBlock('div', null, [renderSlot(slots, 'default')])
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)
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}
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}
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}
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const Wrapper = {
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setup(props: any, { slots }: SetupContext) {
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// use the manually written render function to rendering the optimized slots,
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// which should make subsequent updates exit the optimized mode correctly
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return () => {
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return slots.default!()[state.value]
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}
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}
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}
|
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const app = createApp({
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setup() {
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return () => {
|
|
return (
|
|
openBlock(),
|
|
createBlock(Wrapper, null, {
|
|
default: withCtx(() => [
|
|
createVNode(CompA, null, {
|
|
default: withCtx(() => [createTextVNode('Hello')]),
|
|
_: 1 /* STABLE */
|
|
}),
|
|
createVNode(CompA, null, {
|
|
default: withCtx(() => [createTextVNode('World')]),
|
|
_: 1 /* STABLE */
|
|
})
|
|
]),
|
|
_: 1 /* STABLE */
|
|
})
|
|
)
|
|
}
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<div>Hello</div>')
|
|
|
|
state.value = 1
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<div>World</div>')
|
|
})
|
|
|
|
//#3623
|
|
test('nested teleport unmount need exit the optimization mode', () => {
|
|
const target = nodeOps.createElement('div')
|
|
const root = nodeOps.createElement('div')
|
|
|
|
render(
|
|
(openBlock(),
|
|
createBlock('div', null, [
|
|
(openBlock(),
|
|
createBlock(
|
|
Teleport as any,
|
|
{
|
|
to: target
|
|
},
|
|
[
|
|
createVNode('div', null, [
|
|
(openBlock(),
|
|
createBlock(
|
|
Teleport as any,
|
|
{
|
|
to: target
|
|
},
|
|
[createVNode('div', null, 'foo')]
|
|
))
|
|
])
|
|
]
|
|
))
|
|
])),
|
|
root
|
|
)
|
|
expect(inner(target)).toMatchInlineSnapshot(
|
|
`"<div><!--teleport start--><!--teleport end--></div><div>foo</div>"`
|
|
)
|
|
expect(inner(root)).toMatchInlineSnapshot(
|
|
`"<div><!--teleport start--><!--teleport end--></div>"`
|
|
)
|
|
|
|
render(null, root)
|
|
expect(inner(target)).toBe('')
|
|
})
|
|
|
|
// #3548
|
|
test('should not track dynamic children when the user calls a compiled slot inside template expression', () => {
|
|
const Comp = {
|
|
setup(props: any, { slots }: SetupContext) {
|
|
return () => {
|
|
return (
|
|
openBlock(),
|
|
(block = createBlock('section', null, [
|
|
renderSlot(slots, 'default')
|
|
]))
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
let dynamicVNode: VNode
|
|
const Wrapper = {
|
|
setup(props: any, { slots }: SetupContext) {
|
|
return () => {
|
|
return (
|
|
openBlock(),
|
|
createBlock(Comp, null, {
|
|
default: withCtx(() => {
|
|
return [
|
|
(dynamicVNode = createVNode(
|
|
'div',
|
|
{
|
|
class: {
|
|
foo: !!slots.default!()
|
|
}
|
|
},
|
|
null,
|
|
PatchFlags.CLASS
|
|
))
|
|
]
|
|
}),
|
|
_: 1
|
|
})
|
|
)
|
|
}
|
|
}
|
|
}
|
|
const app = createApp({
|
|
render() {
|
|
return (
|
|
openBlock(),
|
|
createBlock(Wrapper, null, {
|
|
default: withCtx(() => {
|
|
return [createVNode({}) /* component */]
|
|
}),
|
|
_: 1
|
|
})
|
|
)
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<section><div class="foo"></div></section>')
|
|
/**
|
|
* Block Tree:
|
|
* - block(div)
|
|
* - block(Fragment): renderSlots()
|
|
* - dynamicVNode
|
|
*/
|
|
expect(block!.dynamicChildren!.length).toBe(1)
|
|
expect(block!.dynamicChildren![0].dynamicChildren!.length).toBe(1)
|
|
expect(block!.dynamicChildren![0].dynamicChildren![0]).toEqual(
|
|
dynamicVNode!
|
|
)
|
|
})
|
|
|
|
// 3569
|
|
test('should force bailout when the user manually calls the slot function', async () => {
|
|
const index = ref(0)
|
|
const Foo = {
|
|
setup(props: any, { slots }: SetupContext) {
|
|
return () => {
|
|
return slots.default!()[index.value]
|
|
}
|
|
}
|
|
}
|
|
|
|
const app = createApp({
|
|
setup() {
|
|
return () => {
|
|
return (
|
|
openBlock(),
|
|
createBlock(Foo, null, {
|
|
default: withCtx(() => [
|
|
true
|
|
? (openBlock(), createBlock('p', { key: 0 }, '1'))
|
|
: createCommentVNode('v-if', true),
|
|
true
|
|
? (openBlock(), createBlock('p', { key: 0 }, '2'))
|
|
: createCommentVNode('v-if', true)
|
|
]),
|
|
_: 1 /* STABLE */
|
|
})
|
|
)
|
|
}
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<p>1</p>')
|
|
|
|
index.value = 1
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<p>2</p>')
|
|
|
|
index.value = 0
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<p>1</p>')
|
|
})
|
|
|
|
// #3779
|
|
test('treat slots manually written by the user as dynamic', async () => {
|
|
const Middle = {
|
|
setup(props: any, { slots }: any) {
|
|
return slots.default!
|
|
}
|
|
}
|
|
|
|
const Comp = {
|
|
setup(props: any, { slots }: any) {
|
|
return () => {
|
|
return (
|
|
openBlock(),
|
|
createBlock('div', null, [
|
|
createVNode(Middle, null, {
|
|
default: withCtx(
|
|
() => [
|
|
createVNode('div', null, [renderSlot(slots, 'default')])
|
|
],
|
|
undefined
|
|
),
|
|
_: 3 /* FORWARDED */
|
|
})
|
|
])
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
const loading = ref(false)
|
|
const app = createApp({
|
|
setup() {
|
|
return () => {
|
|
// important: write the slot content here
|
|
const content = h('span', loading.value ? 'loading' : 'loaded')
|
|
return h(Comp, null, {
|
|
default: () => content
|
|
})
|
|
}
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<div><div><span>loaded</span></div></div>')
|
|
|
|
loading.value = true
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<div><div><span>loading</span></div></div>')
|
|
})
|
|
|
|
// #3828
|
|
test('patch Suspense in optimized mode w/ nested dynamic nodes', async () => {
|
|
const show = ref(false)
|
|
|
|
const app = createApp({
|
|
render() {
|
|
return (
|
|
openBlock(),
|
|
createBlock(
|
|
Fragment,
|
|
null,
|
|
[
|
|
(openBlock(),
|
|
createBlock(SuspenseImpl, null, {
|
|
default: withCtx(() => [
|
|
createVNode('div', null, [
|
|
createVNode('div', null, show.value, PatchFlags.TEXT)
|
|
])
|
|
]),
|
|
_: SlotFlags.STABLE
|
|
}))
|
|
],
|
|
PatchFlags.STABLE_FRAGMENT
|
|
)
|
|
)
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<div><div>false</div></div>')
|
|
|
|
show.value = true
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<div><div>true</div></div>')
|
|
})
|
|
|
|
// #4183
|
|
test('should not take unmount children fast path /w Suspense', async () => {
|
|
const show = ref(true)
|
|
const spyUnmounted = jest.fn()
|
|
|
|
const Parent = {
|
|
setup(props: any, { slots }: SetupContext) {
|
|
return () => (
|
|
openBlock(),
|
|
createBlock(SuspenseImpl, null, {
|
|
default: withCtx(() => [renderSlot(slots, 'default')]),
|
|
_: SlotFlags.FORWARDED
|
|
})
|
|
)
|
|
}
|
|
}
|
|
|
|
const Child = {
|
|
setup() {
|
|
onUnmounted(spyUnmounted)
|
|
return () => createVNode('div', null, show.value, PatchFlags.TEXT)
|
|
}
|
|
}
|
|
|
|
const app = createApp({
|
|
render() {
|
|
return show.value
|
|
? (openBlock(),
|
|
createBlock(
|
|
Parent,
|
|
{ key: 0 },
|
|
{
|
|
default: withCtx(() => [createVNode(Child)]),
|
|
_: SlotFlags.STABLE
|
|
}
|
|
))
|
|
: createCommentVNode('v-if', true)
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
expect(inner(root)).toBe('<div>true</div>')
|
|
|
|
show.value = false
|
|
await nextTick()
|
|
expect(inner(root)).toBe('<!--v-if-->')
|
|
expect(spyUnmounted).toHaveBeenCalledTimes(1)
|
|
})
|
|
|
|
// #3881
|
|
// root cause: fragment inside a compiled slot passed to component which
|
|
// programmatically invokes the slot. The entire slot should de-opt but
|
|
// the fragment was incorrectly put in optimized mode which causes it to skip
|
|
// updates for its inner components.
|
|
test('fragments inside programmatically invoked compiled slot should de-opt properly', async () => {
|
|
const Parent: FunctionalComponent = (_, { slots }) => slots.default!()
|
|
const Dummy = () => 'dummy'
|
|
|
|
const toggle = ref(true)
|
|
const force = ref(0)
|
|
|
|
const app = createApp({
|
|
render() {
|
|
if (!toggle.value) {
|
|
return null
|
|
}
|
|
return h(
|
|
Parent,
|
|
{ n: force.value },
|
|
{
|
|
default: withCtx(
|
|
() => [
|
|
createVNode('ul', null, [
|
|
(openBlock(),
|
|
createBlock(
|
|
Fragment,
|
|
null,
|
|
renderList(1, item => {
|
|
return createVNode('li', null, [createVNode(Dummy)])
|
|
}),
|
|
64 /* STABLE_FRAGMENT */
|
|
))
|
|
])
|
|
],
|
|
undefined,
|
|
true
|
|
),
|
|
_: 1 /* STABLE */
|
|
}
|
|
)
|
|
}
|
|
})
|
|
|
|
app.mount(root)
|
|
|
|
// force a patch
|
|
force.value++
|
|
await nextTick()
|
|
expect(inner(root)).toBe(`<ul><li>dummy</li></ul>`)
|
|
|
|
// unmount
|
|
toggle.value = false
|
|
await nextTick()
|
|
// should successfully unmount without error
|
|
expect(inner(root)).toBe(`<!---->`)
|
|
})
|
|
})
|