ant-design/tests/shared/imageTest.tsx

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import React from 'react';
// Reference: https://github.com/ant-design/ant-design/pull/24003#discussion_r427267386
// eslint-disable-next-line import/no-unresolved
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import { createCache, extractStyle, StyleProvider } from '@ant-design/cssinjs';
import dayjs from 'dayjs';
import { globSync } from 'glob';
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import { configureToMatchImageSnapshot } from 'jest-image-snapshot';
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import MockDate from 'mockdate';
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import ReactDOMServer from 'react-dom/server';
import { App, ConfigProvider, theme } from '../../components';
const toMatchImageSnapshot = configureToMatchImageSnapshot({
customSnapshotsDir: `${process.cwd()}/imageSnapshots`,
customDiffDir: `${process.cwd()}/imageDiffSnapshots`,
});
expect.extend({ toMatchImageSnapshot });
const themes = {
default: theme.defaultAlgorithm,
dark: theme.darkAlgorithm,
compact: theme.compactAlgorithm,
};
// eslint-disable-next-line jest/no-export
export default function imageTest(component: React.ReactElement) {
it(`component image screenshot should correct`, async () => {
await jestPuppeteer.resetPage();
await page.setRequestInterception(true);
const onRequestHandle = (request: any) => {
if (['image'].includes(request.resourceType())) {
request.abort();
} else {
request.continue();
}
};
MockDate.set(dayjs('2016-11-22').valueOf());
page.on('request', onRequestHandle);
await page.goto(`file://${process.cwd()}/tests/index.html`);
await page.addStyleTag({ path: `${process.cwd()}/dist/reset.css` });
await page.addStyleTag({content: '*{animation: none!important;}'})
const cache = createCache();
const element = (
<StyleProvider cache={cache}>
<App>
{Object.entries(themes).map(([key, algorithm]) => (
<div
style={{ background: key === 'dark' ? '#000' : '', padding: `24px 12px` }}
key={key}
>
<ConfigProvider theme={{ algorithm }}>{component}</ConfigProvider>
</div>
))}
</App>
</StyleProvider>
);
const html = ReactDOMServer.renderToString(element);
const styleStr = extractStyle(cache);
await page.evaluate(
(innerHTML, ssrStyle) => {
document.querySelector('#root')!.innerHTML = innerHTML;
const head = document.querySelector('head')!;
head.innerHTML += ssrStyle;
},
html,
styleStr,
);
const image = await page.screenshot({
fullPage: true,
});
expect(image).toMatchImageSnapshot();
MockDate.reset();
page.removeListener('request', onRequestHandle);
});
}
type Options = {
skip?: boolean | string[];
};
// eslint-disable-next-line jest/no-export
export function imageDemoTest(component: string, options: Options = {}) {
let describeMethod = options.skip === true ? describe.skip : describe;
const files = globSync(`./components/${component}/demo/*.tsx`);
files.forEach((file) => {
if (Array.isArray(options.skip) && options.skip.some((c) => file.includes(c))) {
describeMethod = describe.skip;
} else {
describeMethod = describe;
}
describeMethod(`Test ${file} image`, () => {
// eslint-disable-next-line global-require,import/no-dynamic-require
let Demo = require(`../../${file}`).default;
if (typeof Demo === 'function') {
Demo = <Demo />;
}
imageTest(Demo);
});
});
}