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import { | ||
render, | ||
useCSSVars, | ||
h, | ||
reactive, | ||
nextTick, | ||
ComponentOptions | ||
} from '@vue/runtime-dom' | ||
|
||
describe('useCssVars', () => { | ||
async function assertCssVars( | ||
getApp: (state: any) => ComponentOptions, | ||
scopeId?: string | ||
) { | ||
const state = reactive({ color: 'red' }) | ||
const App = getApp(state) | ||
const root = document.createElement('div') | ||
const prefix = scopeId ? `${scopeId}-` : `` | ||
|
||
render(h(App), root) | ||
for (const c of [].slice.call(root.children as any)) { | ||
expect((c as HTMLElement).style.getPropertyValue(`--${prefix}color`)) | ||
} | ||
|
||
state.color = 'green' | ||
await nextTick() | ||
for (const c of [].slice.call(root.children as any)) { | ||
expect((c as HTMLElement).style.getPropertyValue(`--${prefix}color`)) | ||
} | ||
} | ||
|
||
test('basic', async () => { | ||
await assertCssVars(state => ({ | ||
setup() { | ||
// test receiving render context | ||
useCSSVars((ctx: any) => ({ | ||
color: ctx.color | ||
})) | ||
return state | ||
}, | ||
render() { | ||
return h('div') | ||
} | ||
})) | ||
}) | ||
|
||
test('on fragment root', async () => { | ||
await assertCssVars(state => ({ | ||
setup() { | ||
useCSSVars(() => state) | ||
return () => [h('div'), h('div')] | ||
} | ||
})) | ||
}) | ||
|
||
test('on HOCs', async () => { | ||
const Child = () => [h('div'), h('div')] | ||
|
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await assertCssVars(state => ({ | ||
setup() { | ||
useCSSVars(() => state) | ||
return () => h(Child) | ||
} | ||
})) | ||
}) | ||
|
||
test('with scopeId', async () => { | ||
const id = 'v-12345' | ||
|
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await assertCssVars( | ||
state => ({ | ||
setup() { | ||
useCSSVars(() => state, id) | ||
return () => h('div') | ||
} | ||
}), | ||
id | ||
) | ||
}) | ||
}) |
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