144 lines
3.5 KiB
TypeScript
144 lines
3.5 KiB
TypeScript
import {
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ref,
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render,
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useCssVars,
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h,
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reactive,
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nextTick,
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ComponentOptions,
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Suspense
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} from '@vue/runtime-dom'
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describe('useCssVars', () => {
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async function assertCssVars(getApp: (state: any) => ComponentOptions) {
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const state = reactive({ color: 'red' })
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const App = getApp(state)
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const root = document.createElement('div')
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render(h(App), root)
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await nextTick()
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
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}
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state.color = 'green'
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await nextTick()
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe('green')
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}
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}
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test('basic', async () => {
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await assertCssVars(state => ({
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setup() {
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// test receiving render context
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useCssVars((ctx: any) => ({
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color: ctx.color
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}))
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return state
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},
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render() {
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return h('div')
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}
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}))
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})
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test('on fragment root', async () => {
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await assertCssVars(state => ({
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setup() {
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useCssVars(() => state)
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return () => [h('div'), h('div')]
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}
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}))
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})
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test('on HOCs', async () => {
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const Child = () => [h('div'), h('div')]
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await assertCssVars(state => ({
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setup() {
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useCssVars(() => state)
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return () => h(Child)
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}
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}))
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})
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test('on suspense root', async () => {
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const state = reactive({ color: 'red' })
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const root = document.createElement('div')
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let resolveAsync: any
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let asyncPromise: any
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const AsyncComp = {
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setup() {
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asyncPromise = new Promise(r => {
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resolveAsync = () => {
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r(() => h('p', 'default'))
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}
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})
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return asyncPromise
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}
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}
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const App = {
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setup() {
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useCssVars(() => state)
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return () =>
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h(Suspense, null, {
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default: h(AsyncComp),
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fallback: h('div', 'fallback')
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})
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}
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}
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render(h(App), root)
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await nextTick()
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// css vars use with fallback tree
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
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}
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// AsyncComp resolve
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resolveAsync()
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await asyncPromise.then(() => {})
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// Suspense effects flush
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await nextTick()
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// css vars use with default tree
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
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}
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state.color = 'green'
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await nextTick()
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe('green')
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}
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})
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test('with subTree changed', async () => {
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const state = reactive({ color: 'red' })
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const value = ref(true)
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const root = document.createElement('div')
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const App = {
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setup() {
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useCssVars(() => state)
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return () => (value.value ? [h('div')] : [h('div'), h('div')])
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}
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}
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render(h(App), root)
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await nextTick()
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// css vars use with fallback tree
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
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}
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value.value = false
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await nextTick()
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for (const c of [].slice.call(root.children as any)) {
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expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe('red')
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}
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})
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})
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