59 lines
1.6 KiB
TypeScript
59 lines
1.6 KiB
TypeScript
import React from 'react';
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import { act } from '@testing-library/react';
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import {
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HotTable
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} from '../src/hotTable';
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import {
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createSpreadsheetData,
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mockElementDimensions,
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mountComponentWithRef,
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sleep,
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} from './_helpers';
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/**
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* Worth noting, that although it's possible to use React.memo on renderer components, it doesn't do much, as currently they're recreated on every
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* Handsontable's `render`.
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*/
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describe('React.memo', () => {
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it('should be possible to use React.memo on renderer components.', async () => {
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function RendererComponent2 (props) {
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return (
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<>
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value: {props.value}
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</>
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);
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}
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const MemoizedRendererComponent2 = React.memo(RendererComponent2);
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const hotInstance = mountComponentWithRef((
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<HotTable licenseKey="non-commercial-and-evaluation"
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id="test-hot"
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data={createSpreadsheetData(1, 1)}
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width={300}
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height={300}
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rowHeights={23}
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colWidths={50}
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autoRowSize={false}
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autoColumnSize={false}
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init={function () {
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mockElementDimensions(this.rootElement, 300, 300);
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}}>
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<MemoizedRendererComponent2 hot-renderer/>
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</HotTable>
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)).hotInstance;
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await act(async () => {
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hotInstance.render();
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});
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await sleep(100);
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expect(hotInstance.getCell(0, 0).innerHTML).toEqual('<div>value: A1</div>');
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});
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/*
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Editors cannot use React.memo, as they're derived from the BaseEditorComponent class, thus not being function components.
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*/
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});
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