108 lines
2.5 KiB
TypeScript
108 lines
2.5 KiB
TypeScript
import {
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ref,
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h,
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render,
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nodeOps,
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serializeInner,
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nextTick,
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VNode
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} from '@vue/runtime-test'
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describe('renderer: component', () => {
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test('should update parent(hoc) component host el when child component self update', async () => {
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const value = ref(true)
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let parentVnode: VNode
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let childVnode1: VNode
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let childVnode2: VNode
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const Parent = {
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render: () => {
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// let Parent first rerender
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return (parentVnode = h(Child))
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}
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}
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const Child = {
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render: () => {
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return value.value
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? (childVnode1 = h('div'))
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: (childVnode2 = h('span'))
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}
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}
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const root = nodeOps.createElement('div')
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render(h(Parent), root)
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expect(serializeInner(root)).toBe(`<div></div>`)
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expect(parentVnode!.el).toBe(childVnode1!.el)
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value.value = false
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await nextTick()
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expect(serializeInner(root)).toBe(`<span></span>`)
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expect(parentVnode!.el).toBe(childVnode2!.el)
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})
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it('should create an Component with props', () => {
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const Comp = {
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render: () => {
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return h('div')
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}
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}
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const root = nodeOps.createElement('div')
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render(h(Comp, { id: 'foo', class: 'bar' }), root)
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expect(serializeInner(root)).toBe(`<div id="foo" class="bar"></div>`)
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})
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it('should create an Component with direct text children', () => {
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const Comp = {
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render: () => {
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return h('div', 'test')
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}
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}
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const root = nodeOps.createElement('div')
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render(h(Comp, { id: 'foo', class: 'bar' }), root)
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expect(serializeInner(root)).toBe(`<div id="foo" class="bar">test</div>`)
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})
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it('should update an Component tag which is already mounted', () => {
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const Comp1 = {
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render: () => {
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return h('div', 'foo')
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}
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}
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const root = nodeOps.createElement('div')
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render(h(Comp1), root)
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expect(serializeInner(root)).toBe('<div>foo</div>')
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const Comp2 = {
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render: () => {
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return h('span', 'foo')
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}
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}
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render(h(Comp2), root)
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expect(serializeInner(root)).toBe('<span>foo</span>')
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})
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// #2072
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it('should not update Component if only changed props are declared emit listeners', () => {
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const Comp1 = {
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emits: ['foo'],
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updated: jest.fn(),
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render: () => null
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}
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const root = nodeOps.createElement('div')
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render(
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h(Comp1, {
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onFoo: () => {}
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}),
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root
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)
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render(
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h(Comp1, {
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onFoo: () => {}
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}),
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root
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)
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expect(Comp1.updated).not.toHaveBeenCalled()
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})
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})
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