90 lines
2.7 KiB
JavaScript
90 lines
2.7 KiB
JavaScript
import * as Horizon from '@cloudsop/horizon/index.ts';
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import * as LogUtils from '../../jest/logUtils';
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import { Text } from '../../jest/commonComponents';
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describe('useImperativeHandle Hook Test', () => {
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const {
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useState,
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useImperativeHandle,
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forwardRef,
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act,
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} = Horizon;
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const { unmountComponentAtNode } = Horizon;
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it('测试useImperativeHandle', () => {
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let App = (props, ref) => {
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const [num, setNum] = useState(0);
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useImperativeHandle(ref, () => ({ num, setNum }), []);
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return <p>{num}</p>;
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};
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let App1 = (props, ref) => {
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const [num1, setNum1] = useState(0);
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useImperativeHandle(ref, () => ({ num1, setNum1 }), [num1]);
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return <p>{num1}</p>;
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};
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App = forwardRef(App);
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App1 = forwardRef(App1);
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const counter = Horizon.createRef(null);
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const counter1 = Horizon.createRef(null);
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Horizon.render(<App ref={counter} />, container);
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expect(counter.current.num).toBe(0);
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act(() => {
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counter.current.setNum(1);
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});
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// useImperativeHandle的dep为[],所以不会变
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expect(counter.current.num).toBe(0);
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// 清空container
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unmountComponentAtNode(container);
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Horizon.render(<App1 ref={counter1} />, container);
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expect(counter1.current.num1).toBe(0);
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act(() => {
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counter1.current.setNum1(1);
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});
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// useImperativeHandle的dep为[num1],所以会变
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expect(counter1.current.num1).toBe(1);
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});
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it('useImperativeHandle没有配置dep时自动更新', () => {
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let App = (props, ref) => {
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const [num, setNum] = useState(0);
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useImperativeHandle(ref, () => ({ num, setNum }));
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return <Text text={num} />;
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};
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let App1 = (props, ref) => {
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const [num1, setNum1] = useState(0);
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useImperativeHandle(ref, () => ({ num1, setNum1 }), []);
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return <Text text={num1} />;
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};
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App = forwardRef(App);
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App1 = forwardRef(App1);
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const counter = Horizon.createRef(null);
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const counter1 = Horizon.createRef(null);
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Horizon.render(<App ref={counter} />, container);
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expect(LogUtils.getAndClear()).toEqual([0]);
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expect(counter.current.num).toBe(0);
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act(() => {
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counter.current.setNum(1);
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});
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expect(LogUtils.getAndClear()).toEqual([1]);
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// useImperativeHandle没有配置的dep,所以会自动更新
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expect(counter.current.num).toBe(1);
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// 清空container
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unmountComponentAtNode(container);
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Horizon.render(<App1 ref={counter1} />, container);
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expect(LogUtils.getAndClear()).toEqual([0]);
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expect(counter1.current.num1).toBe(0);
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act(() => {
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counter1.current.setNum1(1);
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});
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expect(LogUtils.getAndClear()).toEqual([1]);
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// useImperativeHandle的dep为[],所以不会变
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expect(counter1.current.num1).toBe(0);
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});
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});
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