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packages/griffith/src/contexts/__test__/PositionProvider.spec.tsx
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| import React, {useContext, useEffect, useRef} from 'react' | ||
| import {act, render} from '@testing-library/react' | ||
| import PositionContext, {PositionContextValue} from '../PositionContext' | ||
| import PositionProvider from '../PositionProvider' | ||
|
|
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| const waitRAF = () => new Promise(requestAnimationFrame) | ||
|
|
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| test('PositionProvider', async () => { | ||
| let ctx!: PositionContextValue | ||
| const MyComponent = () => { | ||
| const ref = useRef<HTMLDivElement>(null) | ||
| const value = (ctx = useContext(PositionContext)) | ||
| useEffect(() => { | ||
| Object.defineProperties(ref.current?.parentNode, { | ||
| getBoundingClientRect: { | ||
| value() { | ||
| return {width: 100, height: 100} | ||
| }, | ||
| }, | ||
| }) | ||
| value.updateVideoSize({videoWidth: 100, videoHeight: 100}) | ||
| // eslint-disable-next-line react-hooks/exhaustive-deps | ||
| }, []) | ||
| return <div ref={ref} /> | ||
| } | ||
|
|
||
| await act(async () => { | ||
| render( | ||
| <PositionProvider> | ||
| <MyComponent /> | ||
| </PositionProvider> | ||
| ) | ||
| expect(ctx).toMatchInlineSnapshot(` | ||
| Object { | ||
| "helperImageSrc": null, | ||
| "isFullWidth": false, | ||
| "updateVideoSize": [Function], | ||
| } | ||
| `) | ||
| // Provider 内使用了 raf 延迟更新状态 | ||
| await waitRAF() | ||
| expect(ctx).toMatchInlineSnapshot(` | ||
| Object { | ||
| "helperImageSrc": "data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100'></svg>", | ||
| "isFullWidth": true, | ||
| "updateVideoSize": [Function], | ||
| } | ||
| `) | ||
| }) | ||
| }) |
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