File size: 1,259 Bytes
1e92f2d |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 |
import React from 'react';
import { act, render } from '../../../tests/utils';
import useUniqueMemo from '../hooks/useUniqueMemo';
describe('Table', () => {
beforeEach(() => {
jest.useFakeTimers();
});
afterEach(() => {
jest.clearAllTimers();
jest.useRealTimers();
});
it('useSyncState', () => {
const sharedObjDeps1 = {};
const sharedObjDeps2 = {};
let calledTimes = 0;
const Test: React.FC<{ depName?: string }> = ({ depName }) => {
useUniqueMemo(() => {
calledTimes += 1;
return depName;
}, [depName, sharedObjDeps1, 'bamboo', sharedObjDeps2]);
return null;
};
// Reuse the same memo
const { rerender } = render(
<>
<Test depName="light" />
<Test depName="light" />
<Test depName="light" />
</>,
);
expect(calledTimes).toBe(1);
// Different deps should clean up the cache
act(() => {
jest.advanceTimersByTime(1000 * 60 * 20);
});
for (let i = 0; i < 20000; i += 1) {
rerender(<Test depName="diff" key={i} />);
}
rerender(<Test depName="clear" />);
calledTimes = 0;
// Back should recompute
rerender(<Test depName="light" />);
expect(calledTimes).toBe(1);
});
});
|